M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00e9p kh\u1ecfi b\u1ecb \u0103n m\u00f2n. Kim lo\u1ea1i \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y, t\u1ea1o th\u00e0nh l\u1edbp ph\u1ee7 k\u1ebdm b\u00e1m ch\u1eafc. L\u1edbp ph\u1ee7 n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u00e1 ch\u1eafn h\u00f3a h\u1ecdc v\u00e0 v\u1eadt l\u00fd v\u00e0 ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n
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2. Ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u00f3 l\u1ecbch s\u1eed nh\u01b0 th\u1ebf n\u00e0o?\u00a0<\/strong><\/span><\/h2>\nPh\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c xu\u1ea5t hi\u1ec7n v\u00e0o n\u0103m 1742, khi nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p Paul Jacques Malouin tr\u00ecnh b\u00e0y m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ee7 k\u1ebdm l\u00ean s\u1eaft b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y tr\u01b0\u1edbc Vi\u1ec7n H\u00e0n l\u00e2m Ph\u00e1p. Tuy nhi\u00ean, ph\u00e1t minh n\u00e0y v\u1eabn ch\u1ec9 l\u00e0 m\u1ed9t \u00fd t\u01b0\u1edfng cho \u0111\u1ebfn h\u01a1n n\u1eeda th\u1ebf k\u1ef7 sau.<\/p>\n
B\u01b0\u1edbc ngo\u1eb7t th\u1ef1c s\u1ef1 \u0111\u1ebfn v\u00e0o n\u0103m 1836, khi nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p Stanislas Sorel n\u1ed9p \u0111\u01a1n xin c\u1ea5p b\u1eb1ng s\u00e1ng ch\u1ebf cho quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng ho\u00e0n ch\u1ec9nh. Sorel kh\u00f4ng ch\u1ec9 c\u1ea3i ti\u1ebfn ph\u01b0\u01a1ng ph\u00e1p l\u00e0m s\u1ea1ch kim lo\u1ea1i tr\u01b0\u1edbc khi nh\u00fang, m\u00e0 c\u00f2n \u0111\u1eb7t t\u00ean cho n\u00f3 l\u00e0 \u201cgalvanizing\u201d \u2013 m\u1ed9t thu\u1eadt ng\u1eef th\u1eddi b\u1ea5y gi\u1edd d\u00f9ng \u0111\u1ec3 ch\u1ec9 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n.<\/p>\n
S\u1ef1 ra \u0111\u1eddi c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u00e3 nhanh ch\u00f3ng nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 \u0111\u00f3n nh\u1eadn r\u1ed9ng r\u00e3i. N\u0103m 1850, ch\u1ec9 14 n\u0103m sau khi \u0111\u01b0\u1ee3c c\u1ea5p b\u1eb1ng s\u00e1ng ch\u1ebf, l\u01b0\u1ee3ng k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ea1 k\u1ebdm \u1edf Anh \u0111\u00e3 \u0111\u1ea1t t\u1edbi 10.000 t\u1ea5n m\u1ed7i n\u0103m. C\u1ea7u C\u1ed5ng Brooklyn, ho\u00e0n th\u00e0nh v\u00e0o n\u0103m 1883, l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng tr\u00ecnh l\u1edbn \u0111\u1ea7u ti\u00ean s\u1eed d\u1ee5ng c\u00e1p m\u1ea1 k\u1ebdm, minh ch\u1ee9ng cho \u0111\u1ed9 b\u1ec1n v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y.<\/p>\n
Trong th\u1ebf k\u1ef7 20, n\u00f3 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, v\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 c\u1ea3i ti\u1ebfn c\u00f4ng ngh\u1ec7. Ng\u00e0y nay, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm ph\u1ed5 bi\u1ebfn tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb x\u00e2y d\u1ef1ng \u0111\u1ebfn giao th\u00f4ng v\u1eadn t\u1ea3i, t\u1eeb n\u00f4ng nghi\u1ec7p \u0111\u1ebfn h\u00f3a ch\u1ea5t. \u0110\u1eb7c bi\u1ec7t trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t v\u1eadt t\u01b0 ph\u1ee5 ki\u1ec7n ng\u00e0nh c\u01a1 \u0111i\u1ec7n th\u00ec\u00a0thang m\u00e1ng c\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong>\u00a0l\u00e0 s\u1ea3n ph\u1ea9m n\u1ed5i b\u1eadt c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y.<\/p>\n3. C\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i cho c\u00f4ng tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, kh\u00f4ng th\u1ec3 b\u1ecf qua t\u1ea7m quan tr\u1ecdng c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n. Ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 c\u0169ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1eeb n\u1ec1n t\u1ea3ng c\u1ee7a nh\u1eefng b\u1ed9 ti\u00eau chu\u1ea9n h\u00e0ng \u0111\u1ea7u tr\u00ean th\u1ebf gi\u1edbi, chia th\u00e0nh 5 ti\u00eau chu\u1ea9n ch\u00ednh:<\/p>\n
3.1 Ti\u00eau chu\u1ea9n Anh BSI<\/strong><\/span><\/h3>\nN\u1ed5i b\u1eadt \u1edf ch\u00e2u \u00c2u, ti\u00eau chu\u1ea9n BSI c\u1ee7a Vi\u1ec7n Ti\u00eau chu\u1ea9n Anh mang \u0111\u1ebfn h\u1ec7 th\u1ed1ng quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, lo\u1ea1i \u1ed1ng v\u00e0 ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng trong l\u0129nh v\u1ef1c th\u00e9p. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 BS EN 10255:2004, BS 1387 \u2013 1985, BS 4504, BS 21 kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh cho \u1ed1ng th\u00e9p m\u1ea1 k\u1ebdm m\u00e0 c\u00f2n n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh c\u1ea1nh tranh c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n
3.2 Ti\u00eau chu\u1ea9n M\u1ef9 ASTM<\/strong><\/span><\/h3>\n\u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u1ec1 m\u1ee9c \u0111\u1ed9 kh\u1eaft khe v\u00e0 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i, ti\u00eau chu\u1ea9n ASTM c\u1ee7a Hi\u1ec7p h\u1ed9i Ki\u1ec3m nghi\u1ec7m V\u1eadt li\u1ec7u Hoa K\u1ef3 l\u00e0 m\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n h\u00e0ng \u0111\u1ea7u \u0111\u01b0\u1ee3c tin d\u00f9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ASTM A53\/A53M (\u0111\u01b0\u1eddng \u1ed1ng) hay A530 (\u1ed1ng th\u00e9p Carbon v\u00e0 h\u1ee3p kim chuy\u00ean d\u1ee5ng) \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 ch\u00ednh x\u00e1c, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao, tu\u1ed5i th\u1ecd d\u00e0i v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 v\u01b0\u1ee3t tr\u1ed9i cho c\u00f4ng tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
3.3 Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ISO 9001<\/strong><\/span><\/h3>\nM\u1eb7c d\u00f9 kh\u00f4ng tr\u1ef1c ti\u1ebfp \u0111\u1ec1 c\u1eadp \u0111\u1ebfn k\u1ef9 thu\u1eadt m\u1ea1 k\u1ebdm, ti\u00eau chu\u1ea9n ISO 9001 c\u1ee7a T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n Qu\u1ed1c t\u1ebf \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ki\u1ec3m so\u00e1t to\u00e0n di\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5. C\u00e1c \u0111\u01a1n v\u1ecb \u0111\u1ea1t ch\u1ee9ng nh\u1eadn ISO 9001 cam k\u1ebft ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd m\u1ecdi kh\u00e2u trong quy tr\u00ecnh, t\u1eeb l\u1ef1a ch\u1ecdn nguy\u00ean li\u1ec7u \u0111\u1ebfn ki\u1ec3m tra th\u00e0nh ph\u1ea9m, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm, mang \u0111\u1ebfn s\u1ef1 an t\u00e2m cho m\u1ecdi d\u1ef1 \u00e1n.<\/p>\n
3.4 Ti\u00eau chu\u1ea9n Nh\u1eadt B\u1ea3n JIS<\/strong><\/span><\/h3>\n\u0110\u01b0\u1ee3c ban h\u00e0nh b\u1edfi \u1ee6y ban Ti\u00eau chu\u1ea9n C\u00f4ng nghi\u1ec7p Nh\u1eadt B\u1ea3n (JISC), b\u1ed9 ti\u00eau chu\u1ea9n JIS \u00e1p d\u1ee5ng cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u00f4ng nghi\u1ec7p t\u1ea1i Nh\u1eadt B\u1ea3n. Trong m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, hai ti\u00eau chu\u1ea9n ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 JIS G3444 (\u1ed1ng th\u00e9p carbon cho k\u1ebft c\u1ea5u chung) v\u00e0 JIS G3466 (\u1ed1ng th\u00e9p vu\u00f4ng v\u00e0 ch\u1eef nh\u1eadt b\u1eb1ng carbon cho k\u1ebft c\u1ea5u chung). C\u00e1c ti\u00eau chu\u1ea9n JIS \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ea5p cho \u1ed1ng th\u00e9p m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u kh\u1eaft khe c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh c\u00f4ng nghi\u1ec7p v\u00e0 d\u00e2n d\u1ee5ng t\u1ea1i Nh\u1eadt B\u1ea3n.<\/p>\n
3.5 Ti\u00eau chu\u1ea9n Vi\u1ec7t Nam<\/strong><\/span><\/h3>\nNgo\u00e0i c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 khu v\u1ef1c, Vi\u1ec7t Nam c\u0169ng s\u1edf h\u1eefu h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n ri\u00eang cho m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cho c\u00e1c c\u00f4ng tr\u00ecnh trong n\u01b0\u1edbc. Ti\u00eau chu\u1ea9n TCVN 5408 hay TCVN 7665 quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra, trong khi TCVN 12514 t\u1eadp trung v\u00e0o ti\u00eau chu\u1ea9n cho th\u00e9p m\u1ea1 k\u1ebdm d\u00f9ng \u0111\u1ec3 gia c\u01b0\u1eddng b\u00ea t\u00f4ng.<\/p>\n
4. \u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nTrong l\u0129nh v\u1ef1c m\u1ea1 k\u1ebdm, \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng b\u1eadc nh\u1ea5t, tr\u1ef1c ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. N\u00f3i chung, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1. Tuy nhi\u00ean, quy lu\u1eadt n\u00e0y ch\u1ec9 ch\u00ednh x\u00e1c khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m c\u00f9ng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/p>\n
Vi\u1ec7c \u0111o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm kh\u00f4ng th\u1ec3 \u0111\u01a1n gi\u1ea3n th\u1ef1c hi\u1ec7n b\u1eb1ng th\u01b0\u1edbc \u0111o m\u00e0 c\u1ea7n d\u1ef1a tr\u00ean m\u1eadt \u0111\u1ed9 k\u1ebdm tr\u00ean \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, tu\u00e2n theo c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 trong ti\u00eau chu\u1ea9n ASTM ho\u1eb7c c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c. So s\u00e1nh \u0111\u1ed9 d\u00e0y m\u1ea1 k\u1ebdm ch\u1ec9 b\u1eb1ng th\u01b0\u1edbc \u0111o c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u00e1nh gi\u00e1 sai l\u1ec7ch, \u0111\u1eb7c bi\u1ec7t khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm kh\u00e1c nhau.<\/p>\n
5. Quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ea1t chu\u1ea9n<\/strong><\/span><\/h2>\n\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u1eefng v\u00e0 t\u00ednh c\u1ea1nh tranh trong ng\u00e0nh kim lo\u1ea1i, quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho nhi\u1ec1u c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng\u00a0C\u01a1 Kh\u00ed P69\u00a0kh\u00e1m ph\u00e1 t\u1eebng b\u01b0\u1edbc c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u01b0\u1ee3t tr\u1ed9i theo c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf.<\/p>\n
B\u01b0\u1edbc 1: L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t kim lo\u1ea1i<\/strong><\/span><\/h3>\nGi\u1ed1ng nh\u01b0 m\u1ed9t t\u00f2a nh\u00e0 ki\u00ean c\u1ed1 c\u1ea7n n\u1ec1n m\u00f3ng v\u1eefng ch\u1eafc, ch\u1ea5t l\u01b0\u1ee3ng th\u00e0nh ph\u1ea9m m\u1ea1 k\u1ebdm ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o giai \u0111o\u1ea1n l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc \u0111\u00f3. B\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t, l\u1edbp s\u01a1n c\u0169\u2026 n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ebd khi\u1ebfn dung d\u1ecbch k\u1ebdm n\u00f3ng kh\u00f4ng b\u00e1m d\u00ednh hi\u1ec7u qu\u1ea3, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
Th\u00f4ng th\u01b0\u1eddng, axit sunfuric ho\u1eb7c axit hydrochloric \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e0y nh\u1edd \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n ph\u00e2n m\u1ea1nh. B\u00ean c\u1ea1nh \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n lo\u1ea1i b\u1ecf cacbon b\u1ec1 m\u1eb7t c\u0169ng \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i.<\/p>\n
B\u01b0\u1edbc 2: Nh\u00fang tr\u1ee3 dung<\/strong><\/span><\/h3>\nSau khi \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, kim lo\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o dung d\u1ecbch amoni clorua v\u00e0 k\u1ebdm clorua trong kho\u1ea3ng 2-3 ph\u00fat \u1edf nhi\u1ec7t \u0111\u1ed9 60-80\u00b0C. M\u1ee5c \u0111\u00edch c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf th\u00eam c\u00e1c oxit c\u00f2n s\u00f3t l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 chu\u1ea9n b\u1ecb l\u1edbp n\u1ec1n ho\u00e0n h\u1ea3o cho giai \u0111o\u1ea1n m\u1ea1 k\u1ebdm ch\u00ednh. Dung d\u1ecbch \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng nh\u1eb9 gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m s\u1ea1ch v\u00e0 t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1t h\u01a1n cho l\u1edbp k\u1ebdm.<\/p>\n
B\u01b0\u1edbc 3: M\u1ea1 k\u1ebdm<\/strong><\/span><\/h3>\nB\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 tr\u00e1i tim c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ch\u00ednh x\u00e1c. Kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u1ea9m v\u00e0 nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 445\u00b0C \u0111\u1ebfn 465\u00b0C. T\u1ea1i nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ph\u1ea3n \u1ee9ng kim lo\u1ea1i gi\u1eefa s\u1eaft v\u00e0 k\u1ebdm di\u1ec5n ra, t\u1ea1o th\u00e0nh l\u1edbp k\u1ebdm b\u00e1m ch\u1eafc tr\u00ean b\u1ec1 m\u1eb7t, mang \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n
Sau khi nh\u00fang, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ec3 ngu\u1ed9i trong kho\u1ea3ng 1-2 ph\u00fat, lo\u1ea1i b\u1ecf k\u1ebdm d\u01b0 th\u1eeba v\u00e0 c\u1eb7n b\u00e1m b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o dung d\u1ecbch cromat trong 30 gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n \u0111\u1eb9p. T\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 m\u00e0 th\u1eddi gian nh\u00fang k\u1ebdm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p.<\/p>\n
B\u01b0\u1edbc 4: L\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m<\/strong><\/span><\/h3>\nGiai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
3. C\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i cho c\u00f4ng tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, kh\u00f4ng th\u1ec3 b\u1ecf qua t\u1ea7m quan tr\u1ecdng c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n. Ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 c\u0169ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1eeb n\u1ec1n t\u1ea3ng c\u1ee7a nh\u1eefng b\u1ed9 ti\u00eau chu\u1ea9n h\u00e0ng \u0111\u1ea7u tr\u00ean th\u1ebf gi\u1edbi, chia th\u00e0nh 5 ti\u00eau chu\u1ea9n ch\u00ednh:<\/p>\n
3.1 Ti\u00eau chu\u1ea9n Anh BSI<\/strong><\/span><\/h3>\nN\u1ed5i b\u1eadt \u1edf ch\u00e2u \u00c2u, ti\u00eau chu\u1ea9n BSI c\u1ee7a Vi\u1ec7n Ti\u00eau chu\u1ea9n Anh mang \u0111\u1ebfn h\u1ec7 th\u1ed1ng quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, lo\u1ea1i \u1ed1ng v\u00e0 ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng trong l\u0129nh v\u1ef1c th\u00e9p. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 BS EN 10255:2004, BS 1387 \u2013 1985, BS 4504, BS 21 kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh cho \u1ed1ng th\u00e9p m\u1ea1 k\u1ebdm m\u00e0 c\u00f2n n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh c\u1ea1nh tranh c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n
3.2 Ti\u00eau chu\u1ea9n M\u1ef9 ASTM<\/strong><\/span><\/h3>\n\u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u1ec1 m\u1ee9c \u0111\u1ed9 kh\u1eaft khe v\u00e0 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i, ti\u00eau chu\u1ea9n ASTM c\u1ee7a Hi\u1ec7p h\u1ed9i Ki\u1ec3m nghi\u1ec7m V\u1eadt li\u1ec7u Hoa K\u1ef3 l\u00e0 m\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n h\u00e0ng \u0111\u1ea7u \u0111\u01b0\u1ee3c tin d\u00f9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ASTM A53\/A53M (\u0111\u01b0\u1eddng \u1ed1ng) hay A530 (\u1ed1ng th\u00e9p Carbon v\u00e0 h\u1ee3p kim chuy\u00ean d\u1ee5ng) \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 ch\u00ednh x\u00e1c, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao, tu\u1ed5i th\u1ecd d\u00e0i v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 v\u01b0\u1ee3t tr\u1ed9i cho c\u00f4ng tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
3.3 Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ISO 9001<\/strong><\/span><\/h3>\nM\u1eb7c d\u00f9 kh\u00f4ng tr\u1ef1c ti\u1ebfp \u0111\u1ec1 c\u1eadp \u0111\u1ebfn k\u1ef9 thu\u1eadt m\u1ea1 k\u1ebdm, ti\u00eau chu\u1ea9n ISO 9001 c\u1ee7a T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n Qu\u1ed1c t\u1ebf \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ki\u1ec3m so\u00e1t to\u00e0n di\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5. C\u00e1c \u0111\u01a1n v\u1ecb \u0111\u1ea1t ch\u1ee9ng nh\u1eadn ISO 9001 cam k\u1ebft ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd m\u1ecdi kh\u00e2u trong quy tr\u00ecnh, t\u1eeb l\u1ef1a ch\u1ecdn nguy\u00ean li\u1ec7u \u0111\u1ebfn ki\u1ec3m tra th\u00e0nh ph\u1ea9m, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm, mang \u0111\u1ebfn s\u1ef1 an t\u00e2m cho m\u1ecdi d\u1ef1 \u00e1n.<\/p>\n
3.4 Ti\u00eau chu\u1ea9n Nh\u1eadt B\u1ea3n JIS<\/strong><\/span><\/h3>\n\u0110\u01b0\u1ee3c ban h\u00e0nh b\u1edfi \u1ee6y ban Ti\u00eau chu\u1ea9n C\u00f4ng nghi\u1ec7p Nh\u1eadt B\u1ea3n (JISC), b\u1ed9 ti\u00eau chu\u1ea9n JIS \u00e1p d\u1ee5ng cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u00f4ng nghi\u1ec7p t\u1ea1i Nh\u1eadt B\u1ea3n. Trong m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, hai ti\u00eau chu\u1ea9n ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 JIS G3444 (\u1ed1ng th\u00e9p carbon cho k\u1ebft c\u1ea5u chung) v\u00e0 JIS G3466 (\u1ed1ng th\u00e9p vu\u00f4ng v\u00e0 ch\u1eef nh\u1eadt b\u1eb1ng carbon cho k\u1ebft c\u1ea5u chung). C\u00e1c ti\u00eau chu\u1ea9n JIS \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ea5p cho \u1ed1ng th\u00e9p m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u kh\u1eaft khe c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh c\u00f4ng nghi\u1ec7p v\u00e0 d\u00e2n d\u1ee5ng t\u1ea1i Nh\u1eadt B\u1ea3n.<\/p>\n
3.5 Ti\u00eau chu\u1ea9n Vi\u1ec7t Nam<\/strong><\/span><\/h3>\nNgo\u00e0i c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 khu v\u1ef1c, Vi\u1ec7t Nam c\u0169ng s\u1edf h\u1eefu h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n ri\u00eang cho m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cho c\u00e1c c\u00f4ng tr\u00ecnh trong n\u01b0\u1edbc. Ti\u00eau chu\u1ea9n TCVN 5408 hay TCVN 7665 quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra, trong khi TCVN 12514 t\u1eadp trung v\u00e0o ti\u00eau chu\u1ea9n cho th\u00e9p m\u1ea1 k\u1ebdm d\u00f9ng \u0111\u1ec3 gia c\u01b0\u1eddng b\u00ea t\u00f4ng.<\/p>\n
4. \u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nTrong l\u0129nh v\u1ef1c m\u1ea1 k\u1ebdm, \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng b\u1eadc nh\u1ea5t, tr\u1ef1c ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. N\u00f3i chung, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1. Tuy nhi\u00ean, quy lu\u1eadt n\u00e0y ch\u1ec9 ch\u00ednh x\u00e1c khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m c\u00f9ng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/p>\n
Vi\u1ec7c \u0111o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm kh\u00f4ng th\u1ec3 \u0111\u01a1n gi\u1ea3n th\u1ef1c hi\u1ec7n b\u1eb1ng th\u01b0\u1edbc \u0111o m\u00e0 c\u1ea7n d\u1ef1a tr\u00ean m\u1eadt \u0111\u1ed9 k\u1ebdm tr\u00ean \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, tu\u00e2n theo c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 trong ti\u00eau chu\u1ea9n ASTM ho\u1eb7c c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c. So s\u00e1nh \u0111\u1ed9 d\u00e0y m\u1ea1 k\u1ebdm ch\u1ec9 b\u1eb1ng th\u01b0\u1edbc \u0111o c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u00e1nh gi\u00e1 sai l\u1ec7ch, \u0111\u1eb7c bi\u1ec7t khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm kh\u00e1c nhau.<\/p>\n
5. Quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ea1t chu\u1ea9n<\/strong><\/span><\/h2>\n\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u1eefng v\u00e0 t\u00ednh c\u1ea1nh tranh trong ng\u00e0nh kim lo\u1ea1i, quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho nhi\u1ec1u c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng\u00a0C\u01a1 Kh\u00ed P69\u00a0kh\u00e1m ph\u00e1 t\u1eebng b\u01b0\u1edbc c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u01b0\u1ee3t tr\u1ed9i theo c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf.<\/p>\n
B\u01b0\u1edbc 1: L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t kim lo\u1ea1i<\/strong><\/span><\/h3>\nGi\u1ed1ng nh\u01b0 m\u1ed9t t\u00f2a nh\u00e0 ki\u00ean c\u1ed1 c\u1ea7n n\u1ec1n m\u00f3ng v\u1eefng ch\u1eafc, ch\u1ea5t l\u01b0\u1ee3ng th\u00e0nh ph\u1ea9m m\u1ea1 k\u1ebdm ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o giai \u0111o\u1ea1n l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc \u0111\u00f3. B\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t, l\u1edbp s\u01a1n c\u0169\u2026 n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ebd khi\u1ebfn dung d\u1ecbch k\u1ebdm n\u00f3ng kh\u00f4ng b\u00e1m d\u00ednh hi\u1ec7u qu\u1ea3, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
Th\u00f4ng th\u01b0\u1eddng, axit sunfuric ho\u1eb7c axit hydrochloric \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e0y nh\u1edd \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n ph\u00e2n m\u1ea1nh. B\u00ean c\u1ea1nh \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n lo\u1ea1i b\u1ecf cacbon b\u1ec1 m\u1eb7t c\u0169ng \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i.<\/p>\n
B\u01b0\u1edbc 2: Nh\u00fang tr\u1ee3 dung<\/strong><\/span><\/h3>\nSau khi \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, kim lo\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o dung d\u1ecbch amoni clorua v\u00e0 k\u1ebdm clorua trong kho\u1ea3ng 2-3 ph\u00fat \u1edf nhi\u1ec7t \u0111\u1ed9 60-80\u00b0C. M\u1ee5c \u0111\u00edch c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf th\u00eam c\u00e1c oxit c\u00f2n s\u00f3t l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 chu\u1ea9n b\u1ecb l\u1edbp n\u1ec1n ho\u00e0n h\u1ea3o cho giai \u0111o\u1ea1n m\u1ea1 k\u1ebdm ch\u00ednh. Dung d\u1ecbch \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng nh\u1eb9 gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m s\u1ea1ch v\u00e0 t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1t h\u01a1n cho l\u1edbp k\u1ebdm.<\/p>\n
B\u01b0\u1edbc 3: M\u1ea1 k\u1ebdm<\/strong><\/span><\/h3>\nB\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 tr\u00e1i tim c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ch\u00ednh x\u00e1c. Kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u1ea9m v\u00e0 nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 445\u00b0C \u0111\u1ebfn 465\u00b0C. T\u1ea1i nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ph\u1ea3n \u1ee9ng kim lo\u1ea1i gi\u1eefa s\u1eaft v\u00e0 k\u1ebdm di\u1ec5n ra, t\u1ea1o th\u00e0nh l\u1edbp k\u1ebdm b\u00e1m ch\u1eafc tr\u00ean b\u1ec1 m\u1eb7t, mang \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n
Sau khi nh\u00fang, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ec3 ngu\u1ed9i trong kho\u1ea3ng 1-2 ph\u00fat, lo\u1ea1i b\u1ecf k\u1ebdm d\u01b0 th\u1eeba v\u00e0 c\u1eb7n b\u00e1m b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o dung d\u1ecbch cromat trong 30 gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n \u0111\u1eb9p. T\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 m\u00e0 th\u1eddi gian nh\u00fang k\u1ebdm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p.<\/p>\n
B\u01b0\u1edbc 4: L\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m<\/strong><\/span><\/h3>\nGiai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
N\u1ed5i b\u1eadt \u1edf ch\u00e2u \u00c2u, ti\u00eau chu\u1ea9n BSI c\u1ee7a Vi\u1ec7n Ti\u00eau chu\u1ea9n Anh mang \u0111\u1ebfn h\u1ec7 th\u1ed1ng quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, lo\u1ea1i \u1ed1ng v\u00e0 ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng trong l\u0129nh v\u1ef1c th\u00e9p. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 BS EN 10255:2004, BS 1387 \u2013 1985, BS 4504, BS 21 kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh cho \u1ed1ng th\u00e9p m\u1ea1 k\u1ebdm m\u00e0 c\u00f2n n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh c\u1ea1nh tranh c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n
3.2 Ti\u00eau chu\u1ea9n M\u1ef9 ASTM<\/strong><\/span><\/h3>\n\u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u1ec1 m\u1ee9c \u0111\u1ed9 kh\u1eaft khe v\u00e0 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i, ti\u00eau chu\u1ea9n ASTM c\u1ee7a Hi\u1ec7p h\u1ed9i Ki\u1ec3m nghi\u1ec7m V\u1eadt li\u1ec7u Hoa K\u1ef3 l\u00e0 m\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n h\u00e0ng \u0111\u1ea7u \u0111\u01b0\u1ee3c tin d\u00f9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ASTM A53\/A53M (\u0111\u01b0\u1eddng \u1ed1ng) hay A530 (\u1ed1ng th\u00e9p Carbon v\u00e0 h\u1ee3p kim chuy\u00ean d\u1ee5ng) \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 ch\u00ednh x\u00e1c, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao, tu\u1ed5i th\u1ecd d\u00e0i v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 v\u01b0\u1ee3t tr\u1ed9i cho c\u00f4ng tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
3.3 Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ISO 9001<\/strong><\/span><\/h3>\nM\u1eb7c d\u00f9 kh\u00f4ng tr\u1ef1c ti\u1ebfp \u0111\u1ec1 c\u1eadp \u0111\u1ebfn k\u1ef9 thu\u1eadt m\u1ea1 k\u1ebdm, ti\u00eau chu\u1ea9n ISO 9001 c\u1ee7a T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n Qu\u1ed1c t\u1ebf \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ki\u1ec3m so\u00e1t to\u00e0n di\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5. C\u00e1c \u0111\u01a1n v\u1ecb \u0111\u1ea1t ch\u1ee9ng nh\u1eadn ISO 9001 cam k\u1ebft ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd m\u1ecdi kh\u00e2u trong quy tr\u00ecnh, t\u1eeb l\u1ef1a ch\u1ecdn nguy\u00ean li\u1ec7u \u0111\u1ebfn ki\u1ec3m tra th\u00e0nh ph\u1ea9m, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm, mang \u0111\u1ebfn s\u1ef1 an t\u00e2m cho m\u1ecdi d\u1ef1 \u00e1n.<\/p>\n
3.4 Ti\u00eau chu\u1ea9n Nh\u1eadt B\u1ea3n JIS<\/strong><\/span><\/h3>\n\u0110\u01b0\u1ee3c ban h\u00e0nh b\u1edfi \u1ee6y ban Ti\u00eau chu\u1ea9n C\u00f4ng nghi\u1ec7p Nh\u1eadt B\u1ea3n (JISC), b\u1ed9 ti\u00eau chu\u1ea9n JIS \u00e1p d\u1ee5ng cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u00f4ng nghi\u1ec7p t\u1ea1i Nh\u1eadt B\u1ea3n. Trong m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, hai ti\u00eau chu\u1ea9n ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 JIS G3444 (\u1ed1ng th\u00e9p carbon cho k\u1ebft c\u1ea5u chung) v\u00e0 JIS G3466 (\u1ed1ng th\u00e9p vu\u00f4ng v\u00e0 ch\u1eef nh\u1eadt b\u1eb1ng carbon cho k\u1ebft c\u1ea5u chung). C\u00e1c ti\u00eau chu\u1ea9n JIS \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ea5p cho \u1ed1ng th\u00e9p m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u kh\u1eaft khe c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh c\u00f4ng nghi\u1ec7p v\u00e0 d\u00e2n d\u1ee5ng t\u1ea1i Nh\u1eadt B\u1ea3n.<\/p>\n
3.5 Ti\u00eau chu\u1ea9n Vi\u1ec7t Nam<\/strong><\/span><\/h3>\nNgo\u00e0i c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 khu v\u1ef1c, Vi\u1ec7t Nam c\u0169ng s\u1edf h\u1eefu h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n ri\u00eang cho m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cho c\u00e1c c\u00f4ng tr\u00ecnh trong n\u01b0\u1edbc. Ti\u00eau chu\u1ea9n TCVN 5408 hay TCVN 7665 quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra, trong khi TCVN 12514 t\u1eadp trung v\u00e0o ti\u00eau chu\u1ea9n cho th\u00e9p m\u1ea1 k\u1ebdm d\u00f9ng \u0111\u1ec3 gia c\u01b0\u1eddng b\u00ea t\u00f4ng.<\/p>\n
4. \u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nTrong l\u0129nh v\u1ef1c m\u1ea1 k\u1ebdm, \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng b\u1eadc nh\u1ea5t, tr\u1ef1c ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. N\u00f3i chung, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1. Tuy nhi\u00ean, quy lu\u1eadt n\u00e0y ch\u1ec9 ch\u00ednh x\u00e1c khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m c\u00f9ng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/p>\n
Vi\u1ec7c \u0111o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm kh\u00f4ng th\u1ec3 \u0111\u01a1n gi\u1ea3n th\u1ef1c hi\u1ec7n b\u1eb1ng th\u01b0\u1edbc \u0111o m\u00e0 c\u1ea7n d\u1ef1a tr\u00ean m\u1eadt \u0111\u1ed9 k\u1ebdm tr\u00ean \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, tu\u00e2n theo c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 trong ti\u00eau chu\u1ea9n ASTM ho\u1eb7c c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c. So s\u00e1nh \u0111\u1ed9 d\u00e0y m\u1ea1 k\u1ebdm ch\u1ec9 b\u1eb1ng th\u01b0\u1edbc \u0111o c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u00e1nh gi\u00e1 sai l\u1ec7ch, \u0111\u1eb7c bi\u1ec7t khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm kh\u00e1c nhau.<\/p>\n
5. Quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ea1t chu\u1ea9n<\/strong><\/span><\/h2>\n\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u1eefng v\u00e0 t\u00ednh c\u1ea1nh tranh trong ng\u00e0nh kim lo\u1ea1i, quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho nhi\u1ec1u c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng\u00a0C\u01a1 Kh\u00ed P69\u00a0kh\u00e1m ph\u00e1 t\u1eebng b\u01b0\u1edbc c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u01b0\u1ee3t tr\u1ed9i theo c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf.<\/p>\n
B\u01b0\u1edbc 1: L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t kim lo\u1ea1i<\/strong><\/span><\/h3>\nGi\u1ed1ng nh\u01b0 m\u1ed9t t\u00f2a nh\u00e0 ki\u00ean c\u1ed1 c\u1ea7n n\u1ec1n m\u00f3ng v\u1eefng ch\u1eafc, ch\u1ea5t l\u01b0\u1ee3ng th\u00e0nh ph\u1ea9m m\u1ea1 k\u1ebdm ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o giai \u0111o\u1ea1n l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc \u0111\u00f3. B\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t, l\u1edbp s\u01a1n c\u0169\u2026 n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ebd khi\u1ebfn dung d\u1ecbch k\u1ebdm n\u00f3ng kh\u00f4ng b\u00e1m d\u00ednh hi\u1ec7u qu\u1ea3, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
Th\u00f4ng th\u01b0\u1eddng, axit sunfuric ho\u1eb7c axit hydrochloric \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e0y nh\u1edd \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n ph\u00e2n m\u1ea1nh. B\u00ean c\u1ea1nh \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n lo\u1ea1i b\u1ecf cacbon b\u1ec1 m\u1eb7t c\u0169ng \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i.<\/p>\n
B\u01b0\u1edbc 2: Nh\u00fang tr\u1ee3 dung<\/strong><\/span><\/h3>\nSau khi \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, kim lo\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o dung d\u1ecbch amoni clorua v\u00e0 k\u1ebdm clorua trong kho\u1ea3ng 2-3 ph\u00fat \u1edf nhi\u1ec7t \u0111\u1ed9 60-80\u00b0C. M\u1ee5c \u0111\u00edch c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf th\u00eam c\u00e1c oxit c\u00f2n s\u00f3t l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 chu\u1ea9n b\u1ecb l\u1edbp n\u1ec1n ho\u00e0n h\u1ea3o cho giai \u0111o\u1ea1n m\u1ea1 k\u1ebdm ch\u00ednh. Dung d\u1ecbch \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng nh\u1eb9 gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m s\u1ea1ch v\u00e0 t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1t h\u01a1n cho l\u1edbp k\u1ebdm.<\/p>\n
B\u01b0\u1edbc 3: M\u1ea1 k\u1ebdm<\/strong><\/span><\/h3>\nB\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 tr\u00e1i tim c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ch\u00ednh x\u00e1c. Kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u1ea9m v\u00e0 nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 445\u00b0C \u0111\u1ebfn 465\u00b0C. T\u1ea1i nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ph\u1ea3n \u1ee9ng kim lo\u1ea1i gi\u1eefa s\u1eaft v\u00e0 k\u1ebdm di\u1ec5n ra, t\u1ea1o th\u00e0nh l\u1edbp k\u1ebdm b\u00e1m ch\u1eafc tr\u00ean b\u1ec1 m\u1eb7t, mang \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n
Sau khi nh\u00fang, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ec3 ngu\u1ed9i trong kho\u1ea3ng 1-2 ph\u00fat, lo\u1ea1i b\u1ecf k\u1ebdm d\u01b0 th\u1eeba v\u00e0 c\u1eb7n b\u00e1m b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o dung d\u1ecbch cromat trong 30 gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n \u0111\u1eb9p. T\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 m\u00e0 th\u1eddi gian nh\u00fang k\u1ebdm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p.<\/p>\n
B\u01b0\u1edbc 4: L\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m<\/strong><\/span><\/h3>\nGiai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
M\u1eb7c d\u00f9 kh\u00f4ng tr\u1ef1c ti\u1ebfp \u0111\u1ec1 c\u1eadp \u0111\u1ebfn k\u1ef9 thu\u1eadt m\u1ea1 k\u1ebdm, ti\u00eau chu\u1ea9n ISO 9001 c\u1ee7a T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n Qu\u1ed1c t\u1ebf \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ki\u1ec3m so\u00e1t to\u00e0n di\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5. C\u00e1c \u0111\u01a1n v\u1ecb \u0111\u1ea1t ch\u1ee9ng nh\u1eadn ISO 9001 cam k\u1ebft ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd m\u1ecdi kh\u00e2u trong quy tr\u00ecnh, t\u1eeb l\u1ef1a ch\u1ecdn nguy\u00ean li\u1ec7u \u0111\u1ebfn ki\u1ec3m tra th\u00e0nh ph\u1ea9m, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm, mang \u0111\u1ebfn s\u1ef1 an t\u00e2m cho m\u1ecdi d\u1ef1 \u00e1n.<\/p>\n
3.4 Ti\u00eau chu\u1ea9n Nh\u1eadt B\u1ea3n JIS<\/strong><\/span><\/h3>\n\u0110\u01b0\u1ee3c ban h\u00e0nh b\u1edfi \u1ee6y ban Ti\u00eau chu\u1ea9n C\u00f4ng nghi\u1ec7p Nh\u1eadt B\u1ea3n (JISC), b\u1ed9 ti\u00eau chu\u1ea9n JIS \u00e1p d\u1ee5ng cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u00f4ng nghi\u1ec7p t\u1ea1i Nh\u1eadt B\u1ea3n. Trong m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, hai ti\u00eau chu\u1ea9n ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 JIS G3444 (\u1ed1ng th\u00e9p carbon cho k\u1ebft c\u1ea5u chung) v\u00e0 JIS G3466 (\u1ed1ng th\u00e9p vu\u00f4ng v\u00e0 ch\u1eef nh\u1eadt b\u1eb1ng carbon cho k\u1ebft c\u1ea5u chung). C\u00e1c ti\u00eau chu\u1ea9n JIS \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ea5p cho \u1ed1ng th\u00e9p m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u kh\u1eaft khe c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh c\u00f4ng nghi\u1ec7p v\u00e0 d\u00e2n d\u1ee5ng t\u1ea1i Nh\u1eadt B\u1ea3n.<\/p>\n
3.5 Ti\u00eau chu\u1ea9n Vi\u1ec7t Nam<\/strong><\/span><\/h3>\nNgo\u00e0i c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 khu v\u1ef1c, Vi\u1ec7t Nam c\u0169ng s\u1edf h\u1eefu h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n ri\u00eang cho m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cho c\u00e1c c\u00f4ng tr\u00ecnh trong n\u01b0\u1edbc. Ti\u00eau chu\u1ea9n TCVN 5408 hay TCVN 7665 quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra, trong khi TCVN 12514 t\u1eadp trung v\u00e0o ti\u00eau chu\u1ea9n cho th\u00e9p m\u1ea1 k\u1ebdm d\u00f9ng \u0111\u1ec3 gia c\u01b0\u1eddng b\u00ea t\u00f4ng.<\/p>\n
4. \u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nTrong l\u0129nh v\u1ef1c m\u1ea1 k\u1ebdm, \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng b\u1eadc nh\u1ea5t, tr\u1ef1c ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. N\u00f3i chung, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1. Tuy nhi\u00ean, quy lu\u1eadt n\u00e0y ch\u1ec9 ch\u00ednh x\u00e1c khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m c\u00f9ng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/p>\n
Vi\u1ec7c \u0111o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm kh\u00f4ng th\u1ec3 \u0111\u01a1n gi\u1ea3n th\u1ef1c hi\u1ec7n b\u1eb1ng th\u01b0\u1edbc \u0111o m\u00e0 c\u1ea7n d\u1ef1a tr\u00ean m\u1eadt \u0111\u1ed9 k\u1ebdm tr\u00ean \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, tu\u00e2n theo c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 trong ti\u00eau chu\u1ea9n ASTM ho\u1eb7c c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c. So s\u00e1nh \u0111\u1ed9 d\u00e0y m\u1ea1 k\u1ebdm ch\u1ec9 b\u1eb1ng th\u01b0\u1edbc \u0111o c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u00e1nh gi\u00e1 sai l\u1ec7ch, \u0111\u1eb7c bi\u1ec7t khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm kh\u00e1c nhau.<\/p>\n
5. Quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ea1t chu\u1ea9n<\/strong><\/span><\/h2>\n\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u1eefng v\u00e0 t\u00ednh c\u1ea1nh tranh trong ng\u00e0nh kim lo\u1ea1i, quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho nhi\u1ec1u c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng\u00a0C\u01a1 Kh\u00ed P69\u00a0kh\u00e1m ph\u00e1 t\u1eebng b\u01b0\u1edbc c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u01b0\u1ee3t tr\u1ed9i theo c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf.<\/p>\n
B\u01b0\u1edbc 1: L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t kim lo\u1ea1i<\/strong><\/span><\/h3>\nGi\u1ed1ng nh\u01b0 m\u1ed9t t\u00f2a nh\u00e0 ki\u00ean c\u1ed1 c\u1ea7n n\u1ec1n m\u00f3ng v\u1eefng ch\u1eafc, ch\u1ea5t l\u01b0\u1ee3ng th\u00e0nh ph\u1ea9m m\u1ea1 k\u1ebdm ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o giai \u0111o\u1ea1n l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc \u0111\u00f3. B\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t, l\u1edbp s\u01a1n c\u0169\u2026 n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ebd khi\u1ebfn dung d\u1ecbch k\u1ebdm n\u00f3ng kh\u00f4ng b\u00e1m d\u00ednh hi\u1ec7u qu\u1ea3, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
Th\u00f4ng th\u01b0\u1eddng, axit sunfuric ho\u1eb7c axit hydrochloric \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e0y nh\u1edd \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n ph\u00e2n m\u1ea1nh. B\u00ean c\u1ea1nh \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n lo\u1ea1i b\u1ecf cacbon b\u1ec1 m\u1eb7t c\u0169ng \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i.<\/p>\n
B\u01b0\u1edbc 2: Nh\u00fang tr\u1ee3 dung<\/strong><\/span><\/h3>\nSau khi \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, kim lo\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o dung d\u1ecbch amoni clorua v\u00e0 k\u1ebdm clorua trong kho\u1ea3ng 2-3 ph\u00fat \u1edf nhi\u1ec7t \u0111\u1ed9 60-80\u00b0C. M\u1ee5c \u0111\u00edch c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf th\u00eam c\u00e1c oxit c\u00f2n s\u00f3t l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 chu\u1ea9n b\u1ecb l\u1edbp n\u1ec1n ho\u00e0n h\u1ea3o cho giai \u0111o\u1ea1n m\u1ea1 k\u1ebdm ch\u00ednh. Dung d\u1ecbch \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng nh\u1eb9 gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m s\u1ea1ch v\u00e0 t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1t h\u01a1n cho l\u1edbp k\u1ebdm.<\/p>\n
B\u01b0\u1edbc 3: M\u1ea1 k\u1ebdm<\/strong><\/span><\/h3>\nB\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 tr\u00e1i tim c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ch\u00ednh x\u00e1c. Kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u1ea9m v\u00e0 nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 445\u00b0C \u0111\u1ebfn 465\u00b0C. T\u1ea1i nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ph\u1ea3n \u1ee9ng kim lo\u1ea1i gi\u1eefa s\u1eaft v\u00e0 k\u1ebdm di\u1ec5n ra, t\u1ea1o th\u00e0nh l\u1edbp k\u1ebdm b\u00e1m ch\u1eafc tr\u00ean b\u1ec1 m\u1eb7t, mang \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n
Sau khi nh\u00fang, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ec3 ngu\u1ed9i trong kho\u1ea3ng 1-2 ph\u00fat, lo\u1ea1i b\u1ecf k\u1ebdm d\u01b0 th\u1eeba v\u00e0 c\u1eb7n b\u00e1m b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o dung d\u1ecbch cromat trong 30 gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n \u0111\u1eb9p. T\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 m\u00e0 th\u1eddi gian nh\u00fang k\u1ebdm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p.<\/p>\n
B\u01b0\u1edbc 4: L\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m<\/strong><\/span><\/h3>\nGiai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Ngo\u00e0i c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 khu v\u1ef1c, Vi\u1ec7t Nam c\u0169ng s\u1edf h\u1eefu h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n ri\u00eang cho m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cho c\u00e1c c\u00f4ng tr\u00ecnh trong n\u01b0\u1edbc. Ti\u00eau chu\u1ea9n TCVN 5408 hay TCVN 7665 quy \u0111\u1ecbnh chi ti\u1ebft v\u1ec1 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra, trong khi TCVN 12514 t\u1eadp trung v\u00e0o ti\u00eau chu\u1ea9n cho th\u00e9p m\u1ea1 k\u1ebdm d\u00f9ng \u0111\u1ec3 gia c\u01b0\u1eddng b\u00ea t\u00f4ng.<\/p>\n
4. \u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nTrong l\u0129nh v\u1ef1c m\u1ea1 k\u1ebdm, \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng b\u1eadc nh\u1ea5t, tr\u1ef1c ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. N\u00f3i chung, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1. Tuy nhi\u00ean, quy lu\u1eadt n\u00e0y ch\u1ec9 ch\u00ednh x\u00e1c khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m c\u00f9ng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/p>\n
Vi\u1ec7c \u0111o \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm kh\u00f4ng th\u1ec3 \u0111\u01a1n gi\u1ea3n th\u1ef1c hi\u1ec7n b\u1eb1ng th\u01b0\u1edbc \u0111o m\u00e0 c\u1ea7n d\u1ef1a tr\u00ean m\u1eadt \u0111\u1ed9 k\u1ebdm tr\u00ean \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, tu\u00e2n theo c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 trong ti\u00eau chu\u1ea9n ASTM ho\u1eb7c c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c. So s\u00e1nh \u0111\u1ed9 d\u00e0y m\u1ea1 k\u1ebdm ch\u1ec9 b\u1eb1ng th\u01b0\u1edbc \u0111o c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u00e1nh gi\u00e1 sai l\u1ec7ch, \u0111\u1eb7c bi\u1ec7t khi so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm kh\u00e1c nhau.<\/p>\n
5. Quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ea1t chu\u1ea9n<\/strong><\/span><\/h2>\n\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u1eefng v\u00e0 t\u00ednh c\u1ea1nh tranh trong ng\u00e0nh kim lo\u1ea1i, quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho nhi\u1ec1u c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng\u00a0C\u01a1 Kh\u00ed P69\u00a0kh\u00e1m ph\u00e1 t\u1eebng b\u01b0\u1edbc c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u01b0\u1ee3t tr\u1ed9i theo c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf.<\/p>\n
B\u01b0\u1edbc 1: L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t kim lo\u1ea1i<\/strong><\/span><\/h3>\nGi\u1ed1ng nh\u01b0 m\u1ed9t t\u00f2a nh\u00e0 ki\u00ean c\u1ed1 c\u1ea7n n\u1ec1n m\u00f3ng v\u1eefng ch\u1eafc, ch\u1ea5t l\u01b0\u1ee3ng th\u00e0nh ph\u1ea9m m\u1ea1 k\u1ebdm ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o giai \u0111o\u1ea1n l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc \u0111\u00f3. B\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t, l\u1edbp s\u01a1n c\u0169\u2026 n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ebd khi\u1ebfn dung d\u1ecbch k\u1ebdm n\u00f3ng kh\u00f4ng b\u00e1m d\u00ednh hi\u1ec7u qu\u1ea3, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
Th\u00f4ng th\u01b0\u1eddng, axit sunfuric ho\u1eb7c axit hydrochloric \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e0y nh\u1edd \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n ph\u00e2n m\u1ea1nh. B\u00ean c\u1ea1nh \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n lo\u1ea1i b\u1ecf cacbon b\u1ec1 m\u1eb7t c\u0169ng \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i.<\/p>\n
B\u01b0\u1edbc 2: Nh\u00fang tr\u1ee3 dung<\/strong><\/span><\/h3>\nSau khi \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, kim lo\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o dung d\u1ecbch amoni clorua v\u00e0 k\u1ebdm clorua trong kho\u1ea3ng 2-3 ph\u00fat \u1edf nhi\u1ec7t \u0111\u1ed9 60-80\u00b0C. M\u1ee5c \u0111\u00edch c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf th\u00eam c\u00e1c oxit c\u00f2n s\u00f3t l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 chu\u1ea9n b\u1ecb l\u1edbp n\u1ec1n ho\u00e0n h\u1ea3o cho giai \u0111o\u1ea1n m\u1ea1 k\u1ebdm ch\u00ednh. Dung d\u1ecbch \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng nh\u1eb9 gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m s\u1ea1ch v\u00e0 t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1t h\u01a1n cho l\u1edbp k\u1ebdm.<\/p>\n
B\u01b0\u1edbc 3: M\u1ea1 k\u1ebdm<\/strong><\/span><\/h3>\nB\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 tr\u00e1i tim c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ch\u00ednh x\u00e1c. Kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u1ea9m v\u00e0 nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 445\u00b0C \u0111\u1ebfn 465\u00b0C. T\u1ea1i nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ph\u1ea3n \u1ee9ng kim lo\u1ea1i gi\u1eefa s\u1eaft v\u00e0 k\u1ebdm di\u1ec5n ra, t\u1ea1o th\u00e0nh l\u1edbp k\u1ebdm b\u00e1m ch\u1eafc tr\u00ean b\u1ec1 m\u1eb7t, mang \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n
Sau khi nh\u00fang, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ec3 ngu\u1ed9i trong kho\u1ea3ng 1-2 ph\u00fat, lo\u1ea1i b\u1ecf k\u1ebdm d\u01b0 th\u1eeba v\u00e0 c\u1eb7n b\u00e1m b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o dung d\u1ecbch cromat trong 30 gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n \u0111\u1eb9p. T\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 m\u00e0 th\u1eddi gian nh\u00fang k\u1ebdm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p.<\/p>\n
B\u01b0\u1edbc 4: L\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m<\/strong><\/span><\/h3>\nGiai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u1eefng v\u00e0 t\u00ednh c\u1ea1nh tranh trong ng\u00e0nh kim lo\u1ea1i, quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho nhi\u1ec1u c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng\u00a0C\u01a1 Kh\u00ed P69\u00a0kh\u00e1m ph\u00e1 t\u1eebng b\u01b0\u1edbc c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u01b0\u1ee3t tr\u1ed9i theo c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf.<\/p>\n
B\u01b0\u1edbc 1: L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t kim lo\u1ea1i<\/strong><\/span><\/h3>\nGi\u1ed1ng nh\u01b0 m\u1ed9t t\u00f2a nh\u00e0 ki\u00ean c\u1ed1 c\u1ea7n n\u1ec1n m\u00f3ng v\u1eefng ch\u1eafc, ch\u1ea5t l\u01b0\u1ee3ng th\u00e0nh ph\u1ea9m m\u1ea1 k\u1ebdm ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o giai \u0111o\u1ea1n l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc \u0111\u00f3. B\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t, l\u1edbp s\u01a1n c\u0169\u2026 n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ebd khi\u1ebfn dung d\u1ecbch k\u1ebdm n\u00f3ng kh\u00f4ng b\u00e1m d\u00ednh hi\u1ec7u qu\u1ea3, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebdm.<\/p>\n
Th\u00f4ng th\u01b0\u1eddng, axit sunfuric ho\u1eb7c axit hydrochloric \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e0y nh\u1edd \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n ph\u00e2n m\u1ea1nh. B\u00ean c\u1ea1nh \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n lo\u1ea1i b\u1ecf cacbon b\u1ec1 m\u1eb7t c\u0169ng \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm hi\u1ec7n \u0111\u1ea1i.<\/p>\n
B\u01b0\u1edbc 2: Nh\u00fang tr\u1ee3 dung<\/strong><\/span><\/h3>\nSau khi \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, kim lo\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o dung d\u1ecbch amoni clorua v\u00e0 k\u1ebdm clorua trong kho\u1ea3ng 2-3 ph\u00fat \u1edf nhi\u1ec7t \u0111\u1ed9 60-80\u00b0C. M\u1ee5c \u0111\u00edch c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf th\u00eam c\u00e1c oxit c\u00f2n s\u00f3t l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 chu\u1ea9n b\u1ecb l\u1edbp n\u1ec1n ho\u00e0n h\u1ea3o cho giai \u0111o\u1ea1n m\u1ea1 k\u1ebdm ch\u00ednh. Dung d\u1ecbch \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng nh\u1eb9 gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m s\u1ea1ch v\u00e0 t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1t h\u01a1n cho l\u1edbp k\u1ebdm.<\/p>\n
B\u01b0\u1edbc 3: M\u1ea1 k\u1ebdm<\/strong><\/span><\/h3>\nB\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 tr\u00e1i tim c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ch\u00ednh x\u00e1c. Kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u1ea9m v\u00e0 nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 445\u00b0C \u0111\u1ebfn 465\u00b0C. T\u1ea1i nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ph\u1ea3n \u1ee9ng kim lo\u1ea1i gi\u1eefa s\u1eaft v\u00e0 k\u1ebdm di\u1ec5n ra, t\u1ea1o th\u00e0nh l\u1edbp k\u1ebdm b\u00e1m ch\u1eafc tr\u00ean b\u1ec1 m\u1eb7t, mang \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n
Sau khi nh\u00fang, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ec3 ngu\u1ed9i trong kho\u1ea3ng 1-2 ph\u00fat, lo\u1ea1i b\u1ecf k\u1ebdm d\u01b0 th\u1eeba v\u00e0 c\u1eb7n b\u00e1m b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o dung d\u1ecbch cromat trong 30 gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n \u0111\u1eb9p. T\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 m\u00e0 th\u1eddi gian nh\u00fang k\u1ebdm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p.<\/p>\n
B\u01b0\u1edbc 4: L\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m<\/strong><\/span><\/h3>\nGiai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Sau khi \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, kim lo\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o dung d\u1ecbch amoni clorua v\u00e0 k\u1ebdm clorua trong kho\u1ea3ng 2-3 ph\u00fat \u1edf nhi\u1ec7t \u0111\u1ed9 60-80\u00b0C. M\u1ee5c \u0111\u00edch c\u1ee7a b\u01b0\u1edbc n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf th\u00eam c\u00e1c oxit c\u00f2n s\u00f3t l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 chu\u1ea9n b\u1ecb l\u1edbp n\u1ec1n ho\u00e0n h\u1ea3o cho giai \u0111o\u1ea1n m\u1ea1 k\u1ebdm ch\u00ednh. Dung d\u1ecbch \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng nh\u1eb9 gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m s\u1ea1ch v\u00e0 t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1t h\u01a1n cho l\u1edbp k\u1ebdm.<\/p>\n
B\u01b0\u1edbc 3: M\u1ea1 k\u1ebdm<\/strong><\/span><\/h3>\nB\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 tr\u00e1i tim c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ch\u00ednh x\u00e1c. Kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u1ea9m v\u00e0 nh\u00fang v\u00e0o b\u1ec3 k\u1ebdm n\u00f3ng ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 445\u00b0C \u0111\u1ebfn 465\u00b0C. T\u1ea1i nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ph\u1ea3n \u1ee9ng kim lo\u1ea1i gi\u1eefa s\u1eaft v\u00e0 k\u1ebdm di\u1ec5n ra, t\u1ea1o th\u00e0nh l\u1edbp k\u1ebdm b\u00e1m ch\u1eafc tr\u00ean b\u1ec1 m\u1eb7t, mang \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n
Sau khi nh\u00fang, s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ec3 ngu\u1ed9i trong kho\u1ea3ng 1-2 ph\u00fat, lo\u1ea1i b\u1ecf k\u1ebdm d\u01b0 th\u1eeba v\u00e0 c\u1eb7n b\u00e1m b\u1eb1ng c\u00e1ch nh\u00fang v\u00e0o dung d\u1ecbch cromat trong 30 gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n \u0111\u1eb9p. T\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 m\u00e0 th\u1eddi gian nh\u00fang k\u1ebdm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p.<\/p>\n
B\u01b0\u1edbc 4: L\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m<\/strong><\/span><\/h3>\nGiai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Giai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a quy tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 l\u00e0m ngu\u1ed9i v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea9m. S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i t\u1ef1 nhi\u00ean ho\u1eb7c b\u1eb1ng n\u01b0\u1edbc l\u00e0m m\u00e1t t\u00f9y theo \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1. Sau \u0111\u00f3, ch\u00fang s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, m\u00e0u s\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a ASTM, AS\/NZS. Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m m\u1ea1 k\u1ebdm \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i v\u00e0 xu\u1ea5t x\u01b0\u1edfng.<\/p>\n
6. \u1ee8ng d\u1ee5ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o v\u1ec7 kim lo\u1ea1i, m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, g\u00f3p ph\u1ea7n n\u00e2ng cao tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng l\u0129nh v\u1ef1c ti\u00eau bi\u1ec3u t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 \u01b0u \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\n
Trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c lo\u1ea1i k\u1ebft c\u1ea5u th\u00e9p, m\u00e1i che, \u1ed1ng d\u1eabn, c\u1eeda ra v\u00e0o, lan can, v\u00e0 nhi\u1ec1u chi ti\u1ebft kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh, gi\u1ea3m thi\u1ec3u chi ph\u00ed b\u1ea3o tr\u00ec. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ec1 m\u1eb7t m\u1ea1 k\u1ebdm s\u00e1ng b\u00f3ng c\u0169ng mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i cho ki\u1ebfn tr\u00fac.<\/p>\n
Trong l\u0129nh v\u1ef1c c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 giao th\u00f4ng, c\u00e1c tr\u1ee5 c\u1ea7u, lan can, bi\u1ec3n b\u00e1o, c\u1ed9t \u0111\u00e8n giao th\u00f4ng, v\u00e0 c\u00e1c chi ti\u1ebft kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi r\u1ec9 s\u00e9t v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1edbp m\u1ea1 k\u1ebdm b\u1ec1n b\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n giao th\u00f4ng, gi\u1ea3m thi\u1ec3u chi ph\u00ed s\u1eeda ch\u1eefa thay th\u1ebf.<\/p>\n
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p nh\u01b0 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau, chu\u1ed3ng tr\u1ea1i gia s\u00fac, nh\u00e0 k\u00ednh, v\u00e0 c\u00e1c trang thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm ch\u1ed1ng \u0103n m\u00f2n, d\u1ec5 v\u1ec7 sinh, g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u1eadt nu\u00f4i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n
Trong l\u0129nh v\u1ef1c d\u1ea7u kh\u00ed v\u00e0 n\u0103ng l\u01b0\u1ee3ng, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u, kh\u00ed, c\u00e1c b\u1ed3n ch\u1ee9a, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. L\u1edbp m\u1ea1 k\u1ebdm gi\u00fap ch\u1ed1ng \u0103n m\u00f2n, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c cao, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n
7. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1 k\u1ebdm<\/strong><\/span><\/h2>\nCh\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1ch quan kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n
M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1edbp m\u1ea1 l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng kim lo\u1ea1i n\u1ec1n. B\u1ec1 m\u1eb7t kim lo\u1ea1i c\u1ea7n s\u1ea1ch, kh\u00f4ng r\u1ec9 s\u00e9t, d\u1ea7u m\u1ee1 hay t\u1ea1p ch\u1ea5t \u0111\u1ec3 dung d\u1ecbch k\u1ebdm b\u00e1m d\u00ednh t\u1ed1t. X\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u1edbp m\u1ea1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1ec5 bong tr\u00f3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 c\u1ee7a l\u1edbp m\u1ea1.<\/p>\n
B\u00ean c\u1ea1nh y\u1ebfu t\u1ed1 n\u1ec1n, th\u00e0nh ph\u1ea7n dung d\u1ecbch k\u1ebdm, nhi\u1ec7t \u0111\u1ed9 m\u1ea1, th\u1eddi gian nh\u00fang v\u00e0 x\u1eed l\u00fd sau m\u1ea1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 b\u00e1m d\u00ednh, t\u00ednh ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp m\u1ea1. Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1eebng y\u1ebfu t\u1ed1 n\u00e0y trong quy tr\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh, \u0111\u1ed3ng nh\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp m\u1ea1 k\u1ebdm, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe c\u1ee7a t\u1eebng d\u1ef1 \u00e1n.<\/p>\n
8. \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/span><\/h2>\n8.1 \u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nM\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n
8.2 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\nTuy nhi\u00ean, kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ho\u00e0n h\u1ea3o, v\u00e0 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd. Chi ph\u00ed ban \u0111\u1ea7u c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn ho\u1eb7c y\u00eau c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng cao. Ngo\u00e0i ra, k\u00edch th\u01b0\u1edbc b\u1ec3 k\u1ebdm th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e1 l\u1edbn.<\/p>\n
M\u1eb7c d\u00f9 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 d\u00e0y h\u01a1n \u1edf c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 m\u1ecfng h\u01a1n \u1edf c\u00e1c b\u1ec1 m\u1eb7t ph\u1eb3ng. Do \u0111\u00f3, c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng y\u1ebfu t\u1ed1 n\u00e0y khi c\u1ea7n \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t cao. Cu\u1ed1i c\u00f9ng, m\u1ed9t s\u1ed1 kim lo\u1ea1i nh\u01b0 nh\u00f4m, magie kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi dung d\u1ecbch k\u1ebdm, khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n
T\u00f3m l\u1ea1i, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u1ea3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 c\u00f4ng tr\u00ecnh, s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i t\u1ed1i \u01b0u v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh c\u1ee7a n\u00f3, bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao. 1. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 […]<\/p>","protected":false},"author":1,"featured_media":1057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/comments?post=1055"}],"version-history":[{"count":1,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/media?parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/categories?post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kimlongmold.com\/en\/wp-json\/wp\/v2\/tags?post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i hi\u1ec7u qu\u1ea3, \u0111\u01b0\u1ee3c tin d\u00f9ng trong nhi\u1ec1u l\u0129nh v\u1ef1c. N\u00f3 mang \u0111\u1ebfn nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 t\u00ednh ti\u1ec7n l\u1ee3i.<\/p>\n
Tr\u01b0\u1edbc h\u1ebft, \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. L\u1edbp m\u1ea1 k\u1ebdm d\u00e0y, b\u00e1m ch\u1eafc t\u1ea1o th\u00e0nh l\u1edbp \u00e1o gi\u00e1p b\u1ea3o v\u1ec7 kim lo\u1ea1i kh\u1ecfi oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m l\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c n\u0103m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf \u0111\u00e1ng k\u1ec3.<\/p>\n
B\u00ean c\u1ea1nh \u0111\u1ed9 b\u1ec1n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n ghi \u0111i\u1ec3m nh\u1edd t\u00ednh th\u1ea9m m\u1ef9 cao. B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 s\u00e1ng b\u00f3ng, \u0111\u1ed3ng \u0111\u1ec1u, mang \u0111\u1ebfn v\u1ebb \u0111\u1eb9p hi\u1ec7n \u0111\u1ea1i v\u00e0 sang tr\u1ecdng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u t\u00ednh th\u1ea9m m\u1ef9 cao. Ngo\u00e0i ra, quy tr\u00ecnh m\u1ea1 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a, cho ph\u00e9p x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m trong th\u1eddi gian ng\u1eafn, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n