{"id":3436,"date":"2018-09-21T08:50:17","date_gmt":"2018-09-21T08:50:17","guid":{"rendered":"https:\/\/phelieu247.com\/?p=3436"},"modified":"2020-02-20T16:20:34","modified_gmt":"2020-02-20T09:20:34","slug":"phan-loai-thep-va-cac-loai-thep-khac","status":"publish","type":"post","link":"https:\/\/phelieu247.com\/en\/phan-loai-thep-va-cac-loai-thep-khac\/","title":{"rendered":"Ph\u00e2n lo\u1ea1i Th\u00e9p v\u00e0 th\u00e9p carbon, Th\u00e9p v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9, Th\u00e9p v\u00e0 th\u00e9p nh\u1eb9"},"content":{"rendered":"

Sorry, this entry is only available in Ti\u1ebfng Vi\u1ec7t<\/a>. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language.<\/p>

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Th\u00e9p hi\u1ec7n \u0111ang l\u00e0 kim lo\u1ea1i th\u00f4ng d\u1ee5ng nh\u1ea5t b\u1edfi nhi\u1ec1u t\u00ednh ch\u1ea5t \u01b0u vi\u1ec7t. Th\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong ng\u00e0nh c\u00f4ng nghi\u1ec7p, x\u00e2y d\u1ef1ng… V\u00e0 ngay c\u1ea3 trong \u0111\u1eddi th\u01b0\u1eddng nh\u01b0 nh\u1eefng v\u1eadt d\u1ee5ng b\u1ebfp n\u00fac: xoong, n\u1ed3i, ch\u1ea3o… Th\u1ebf nh\u01b0ng, li\u1ec7u lo\u1ea1i v\u1eadt d\u1ee5ng n\u00e0o c\u0169ng l\u00e0 th\u00e9p hay l\u00e0 c\u00e1c lo\u1ea1i th\u00e9p kh\u00e1c nhau? Ph\u00e2n lo\u1ea1i th\u00e9p nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/strong> Li\u1ec7u th\u00e9p trong x\u00e2y d\u1ef1ng c\u00f3 gi\u1ed1ng nh\u1eefng lo\u1ea1i th\u00e9p t\u1ea1o ra c\u00e1c v\u1eadt d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y? C\u00f9ng t\u00ecm hi\u1ec3u trong b\u00e0i vi\u1ebft n\u00e0y nh\u00e9!<\/p>\n

\"Ph\u00e2n<\/p>\n

Ph\u00e2n lo\u1ea1i th\u00e9p v\u00e0 th\u00e9p carbon<\/strong><\/span><\/h2>\n

D\u00e2n s\u1ed1 to\u00e0n c\u1ea7u ng\u00e0y c\u00e0ng t\u0103ng v\u00e0 c\u00e1c phong c\u00e1ch s\u1ed1ng hi\u1ec7n t\u1ea1i \u0111ang n\u00f3i l\u00ean c\u00e1c h\u1ec7 sinh th\u00e1i tr\u00ean th\u1ebf gi\u1edbi.\u00a0L\u01b0\u1ee3ng ph\u00e1t th\u1ea3i CO2 cao v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 x\u1eed l\u00fd ch\u1ea5t th\u1ea3i sau \u0111\u00f3 \u0111\u1eb7t ra c\u00e1c m\u1ed1i \u0111e d\u1ecda v\u00f4 song \u0111\u1ed1i v\u1edbi n\u1ec1n v\u0103n minh hi\u1ec7n t\u1ea1i.\u00a0\u0110\u1ebfn m\u1ed9t m\u1ee9c \u0111\u1ed9 l\u1edbn, nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng th\u00e9p l\u00e0m c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a th\u1ebf gi\u1edbi.\u00a0N\u00f3 x\u00e2y d\u1ef1ng c\u00e1c th\u1ecb tr\u1ea5n v\u00e0 th\u00e0nh ph\u1ed1 h\u00e0i h\u00f2a v\u1edbi kh\u00ed h\u1eadu, v\u00e0 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a thi\u00ean tai.<\/p>\n

B\u1ea3n ch\u1ea5t t\u00e1i ch\u1ebf c\u1ee7a th\u00e9p v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ph\u1ee5 c\u1ee7a n\u00f3 l\u00e0 m\u1ed9t l\u1ee3i \u00edch. B\u1edfi v\u00ec, n\u00f3 l\u00e0 nguy\u00ean li\u1ec7u ch\u00ednh n\u00e0y t\u00edch h\u1ee3p n\u1ec1n kinh t\u1ebf to\u00e0n c\u1ea7u \u0111\u1ec3 th\u00fac \u0111\u1ea9y ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng.\u00a0Th\u00e9p s\u1ebd tr\u1edf th\u00e0nh th\u00e9p cacbon, khi carbon \u0111\u01b0\u1ee3c th\u00eam v\u00e0o th\u00e9p.\u00a0Th\u00e9p v\u00e0 th\u00e9p cacbon \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t c\u00e1c lo\u1ea1i \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i v\u00e0 ti\u00eau d\u00f9ng kh\u00e1c nhau…<\/p>\n

Th\u00e9p<\/strong><\/span><\/h3>\n

Con ng\u01b0\u1eddi b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng s\u1eaft v\u00e0o kho\u1ea3ng n\u0103m 2000 TCN, \u0111\u00e1nh d\u1ea5u th\u1eddi k\u1ef3 \u0111\u1ed3 s\u1eaft \u1edf Trung \u00c1, b\u1eb1ng c\u00e1ch thay th\u1ebf \u0111\u1ed3ng \u0111\u1ec3 ch\u1ebf t\u1ea1o v\u0169 kh\u00ed v\u00e0 d\u1ee5ng c\u1ee5.\u00a0S\u1eaft ti\u1ebfp t\u1ee5c chi\u1ebfm \u01b0u th\u1ebf trong 3000 n\u0103m ti\u1ebfp theo \u1edf ch\u00e2u \u00c2u, ch\u00e2u \u00c1 v\u00e0 ch\u00e2u Phi. Nh\u01b0ng ngay l\u1eadp t\u1ee9c s\u1eaft ph\u1ea3i nh\u01b0\u1eddng ch\u1ed7 cho th\u00e9p khi Henry Bessemer ph\u00e1t minh ra n\u00f3 v\u00e0o gi\u1eefa nh\u1eefng n\u0103m 1850.<\/p>\n

Th\u00e9p l\u00e0 s\u1eaft, v\u00e0 ch\u1ee9a Carbon; Silicon; Mangan.\u00a0N\u00f3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua qu\u00e1 tr\u00ecnh oxy h\u00f3a ch\u1ecdn l\u1ecdc c\u00e1c t\u1ea1p ch\u1ea5t trong kim lo\u1ea1i n\u00f3ng, ph\u1ebf li\u1ec7u ho\u1eb7c DRI.\u00a0Th\u00e9p c\u00f3 nhi\u1ec1u ti\u1ec3u \u0111\u01a1n v\u1ecb xem x\u00e9t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a lo\u1ea1i, v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t nh\u01b0 v\u1eady bao g\u1ed3m s\u1ee9c m\u1ea1nh; \u0111\u1ed9 d\u1ebbo; \u0111\u1ed9 c\u1ee9ng; chi ph\u00ed v.v…<\/p>\n

Theo ngh\u0129a chung, ph\u00e2n lo\u1ea1i th\u00e9p li\u00ean quan \u0111\u1ebfn h\u00e0m l\u01b0\u1ee3ng carbon c\u1ee7a n\u00f3.\u00a0N\u00f3 kh\u00f4ng \u0103n m\u00f2n; \u00edt d\u1ec5 u\u1ed1n v\u00e0 c\u1ee9ng.\u00a0\u0110\u1ec3 t\u0103ng c\u01b0\u1eddng t\u00ednh ch\u1ea5t c\u1ee7a n\u00f3 th\u00e9p \u0111\u01b0\u1ee3c h\u1ee3p kim v\u1edbi cr\u00f4m; niken; molypden v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c…\u00a0B\u1edfi v\u00ec s\u1ee9c m\u1ea1nh, \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i, th\u00e9p crom \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c x\u00e2y d\u1ef1ng \u00f4 t\u00f4 v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn m\u00e1y bay.\u00a0Ng\u00e0nh c\u00f4ng nghi\u1ec7p l\u1edbn nh\u1ea5t th\u1ebf gi\u1edbi l\u00e0 th\u00e9p, tr\u1ecb gi\u00e1 1,3 t\u1ef7 t\u1ea5n m\u1ed7i n\u0103m.<\/p>\n

Th\u00e9p carbon<\/strong><\/span><\/h3>\n

Theo t\u1eeb \u0111i\u1ec3n Merriam-Webster, \u201cTh\u00e9p l\u00e0 s\u1eaft th\u01b0\u01a1ng m\u1ea1i ch\u1ee9a cacbon trong kho\u1ea3ng 1,7% nh\u01b0 m\u1ed9t\u00a0th\u00e0nh ph\u1ea7n h\u1ee3p kim\u00a0thi\u1ebft y\u1ebfu, d\u1ec5 u\u1ed1n khi \u1edf trong \u0111i\u1ec1u ki\u1ec7n th\u00edch h\u1ee3p; v\u00e0 \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t v\u1edbi gang<\/strong><\/a> b\u1edfi t\u00ednh d\u1ec5 u\u1ed1n v\u00e0 h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n. Th\u00e9p carbon \u0111\u00f4i khi \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ‘th\u00e9p carbon \u0111\u1ed3ng’.\u00a0Vi\u1ec7n S\u1eaft v\u00e0 Th\u00e9p Hoa K\u1ef3 ph\u00e2n bi\u1ec7t th\u00e9p carbon v\u1edbi l\u01b0\u1ee3ng cacbon d\u01b0\u1edbi 2% m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 y\u1ebfu t\u1ed1 h\u1ee3p kim \u0111\u00e1ng ch\u00fa \u00fd n\u00e0o kh\u00e1c.\u00a0T\u1ef7 tr\u1ecdng l\u1edbn trong s\u1ea3n xu\u1ea5t th\u00e9p l\u00e0 th\u00e9p carbon.<\/p>\n

Khi h\u00e0m l\u01b0\u1ee3ng carbon trong th\u00e9p t\u0103ng l\u00ean, n\u00f3 s\u1ebd l\u00e0m gi\u1ea3m \u0111i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a th\u00e9p v\u00e0 tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n v\u00e0 m\u1ea1nh h\u01a1n. Nh\u01b0ng \u0111\u1ed3ng th\u1eddi n\u00f3 s\u1ebd c\u00f3 xu h\u01b0\u1edbng \u00edt d\u1ebbo h\u01a1n v\u00e0 d\u1ec5 u\u1ed1n.\u00a0Th\u00e9p s\u1ebd u\u1ed1n cong nhi\u1ec1u h\u01a1n cho ph\u00e9p t\u1ea1o h\u00ecnh, khi h\u00e0m l\u01b0\u1ee3ng carbon c\u1ee7a n\u00f3 gi\u1ea3m \u0111i.\u00a0\u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a n\u00f3 l\u00e0 carbon l\u00e0m t\u0103ng th\u00eam s\u1ee9c m\u1ea1nh cho th\u00e9p, trong khi \u0111\u1ec3 l\u1ea1i \u0111\u1ed9 \u0111\u00e0n h\u1ed3i.\u00a0C\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p carbon, nh\u01b0 ch\u1ea3o v\u00e0 n\u1ed3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 n\u1ea5u \u0103n, n\u00f3ng h\u01a1n \u0111\u1ed3ng \u0111\u1ec1u so v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p kh\u00e1c.\u00a0Th\u00f4ng th\u01b0\u1eddng, th\u00e9p cacbon c\u00f3 k\u1ebft th\u00fac kh\u00f4ng b\u00f3ng.<\/p>\n

\"Ph\u00e2n<\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p cacbon<\/span><\/h3>\n

Th\u00e9p nh\u1eb9 l\u00e0 m\u1ed9t d\u1ea1ng th\u00e9p cacbon v\u00e0 n\u00f3 ch\u1ee9a 0,05 – 0,29% cacbon. Trong khi lo\u1ea1i trung b\u00ecnh c\u00f3 0,30 – 0,59%.\u00a0C\u00f3 0,60 – 0,99% cacbon trong th\u00e9p cacbon cao. V\u00e0 1,00 – 2,00% carbon trong th\u00e9p si\u00eau carbon.\u00a0Th\u00e9p tr\u1edf th\u00e0nh th\u00e9p cacbon, v\u1edbi \u0111i\u1ec1u ki\u1ec7n carbon c\u00f3 t\u1edbi 2,1%.\u00a0N\u1ebfu ph\u1ea7n tr\u0103m carbon trong th\u00e9p l\u00e0 nhi\u1ec1u h\u01a1n th\u1ebf n\u00e0y, th\u00e9p nh\u01b0 v\u1eady \u0111\u01b0\u1ee3c coi l\u00e0 gang.<\/p>\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Th\u00e9p vs th\u00e9p kh\u00f4ng g\u1ec9<\/strong><\/span><\/h2>\n

Th\u00e9p l\u00e0 m\u1ed9t nguy\u00ean t\u1ed1 c\u00f3 s\u1eaft, cacbon v\u00e0 m\u1ed9t s\u1ed1\u00a0ph\u1ea7n t\u1eed kh\u00e1c\u00a0trong \u0111\u00f3.\u00a0Th\u00e9p kh\u00f4ng\u00a0g\u1ec9\u00a0\u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u00edt nh\u1ea5t 10,5% cr\u00f4m, l\u00e0m cho th\u00e9p kh\u00f4ng r\u1ec9.\u00a0C\u00f3 nhi\u1ec1u t\u1ea1p ch\u1ea5t \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong s\u1eaft. Ch\u1eb3ng h\u1ea1n nh\u01b0 silic; ph\u1ed1t pho; l\u01b0u hu\u1ef3nh v\u00e0 mangan; v\u00e0 trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t th\u00e9p. T\u1ea5t c\u1ea3 c\u00e1c t\u1ea1p ch\u1ea5t n\u00e0y \u0111\u1ec1u \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf.\u00a0S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u00e9p v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t th\u00e9p th\u00e0nh th\u00e9p kh\u00f4ng g\u1ec9; cr\u00f4m; niken; nit\u01a1 v\u00e0 molyp\u0111en \u0111\u01b0\u1ee3c th\u00eam v\u00e0o \u0111\u1ec3 l\u00e0m cho th\u00e9p kh\u00f4ng g\u1ec9.\u00a0Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 th\u00e9p d\u1ec5 b\u1ecb b\u1ea9n v\u00e0 r\u1ec9 s\u00e9t.<\/p>\n

N\u1ebfu ch\u00fang ta so s\u00e1nh s\u1ee9c m\u1ea1nh c\u1ee7a c\u1ea3 th\u00e9p v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9, ch\u00fang ta n\u00ean b\u1ecf qua quan ni\u1ec7m sai l\u1ea7m chung r\u1eb1ng c\u00e1i n\u00e0y m\u1ea1nh h\u01a1n c\u00e1i kia.<\/p>\n

\"Ph\u00e2n<\/p>\n

Th\u00e9p kh\u00f4ng th\u1ec3 thi\u1ebfu trong ng\u00e0nh x\u00e2y d\u1ef1ng<\/span><\/h3>\n

Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p m\u00e0 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c c\u1ee9ng l\u1ea1i, v\u00e0 th\u00e9p th\u00f4ng th\u01b0\u1eddng l\u00e0 h\u01a1i m\u1ea1nh h\u01a1n th\u00e9p l\u1edbp 2, v\u00e0 \u0111\u1ed3ng th\u1eddi n\u00f3 l\u00e0 y\u1ebfu h\u01a1n \u0111\u00e1ng k\u1ec3 n\u1ebfu so s\u00e1nh v\u1ec1 \u0111\u1ed9 c\u1ee9ng.\u00a0N\u1ebfu ch\u00fang ta\u00a0mu\u1ed1n\u00a0t\u00ecm ra s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c t\u00ednh ch\u1ea5t t\u1eeb \u200b\u200bc\u1ee7a c\u1ea3 hai nguy\u00ean t\u1ed1, ch\u00fang ta th\u1ea5y r\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh.\u00a0M\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh. Ngo\u1ea1i tr\u1eeb Series 3xx v\u00e0 4xx.\u00a0M\u1ed9t lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 nh\u01b0 v\u1eady r\u1ebb h\u01a1n, v\u00e0 th\u01b0\u1eddng kh\u00f4ng c\u00f3 th\u00eam b\u1ea5t k\u1ef3 niken n\u00e0o.\u00a0Khi so s\u00e1nh v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9, th\u00e9p l\u00e0 t\u1eeb t\u00ednh.<\/p>\n

C\u00e1ch ph\u00e2n lo\u1ea1i th\u00e9p v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9<\/span><\/strong><\/span><\/h3>\n

Th\u00e9p c\u00f3 c\u00e1c lo\u1ea1i kh\u00e1c nhau \u0111\u1ec3 ph\u00e2n lo\u1ea1i h\u00e0m l\u01b0\u1ee3ng carbon c\u1ee7a n\u00f3. Ch\u1eb3ng h\u1ea1n nh\u01b0 carbon cao, carbon trung b\u00ecnh v\u00e0 carbon th\u1ea5p.\u00a0Th\u00e9p kh\u00f4ng g\u1ec9 c\u0169ng c\u00f3 nhi\u1ec1u lo\u1ea1i, v\u00e0 c\u00e1c lo\u1ea1i c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a ch\u00fang. Ch\u1eb3ng h\u1ea1n nh\u01b0 ph\u00e2n lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 th\u00e0nh th\u00e9p Austenitic; th\u00e9p kh\u00f4ng g\u1ec9 Ferit; th\u00e9p kh\u00f4ng g\u1ec9 Martensitic v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 Duplex.<\/p>\n

Th\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho khu\u00f4n; c\u00f4ng c\u1ee5 c\u1eaft; t\u1ea5m v\u00e0 c\u00e1c h\u00ecnh th\u1ee9c c\u1ea5u tr\u00fac; h\u00e0n v\u00e0 d\u1ee5ng c\u1ee5.\u00a0Th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu cho y\u1ebfu t\u1ed1 ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a n\u00f3. V\u00ec n\u00f3 \u0111\u00e3\u00a0\u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 ch\u1ed1ng l\u1ea1i m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n.\u00a0N\u00f3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho nh\u00e0 x\u01b0\u1edfng, tu\u1ed5i th\u1ecd l\u00e2u d\u00e0i v\u00e0 c\u00e1c b\u1ec1 m\u1eb7t chu\u1ea9n b\u1ecb th\u1ef1c ph\u1ea9m h\u1ee3p v\u1ec7 sinh.\u00a0\u0110\u00f3 l\u00e0 linh ho\u1ea1t, c\u00f3 chi ph\u00ed b\u1ea3o tr\u00ec \u00edt h\u01a1n; v\u00e0 c\u00f3 m\u1ed9t gi\u00e1 tr\u1ecb ph\u1ebf li\u1ec7u r\u1ea5t cao v\u1ec1 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.\u00a0N\u00f3 c\u00f3 th\u1ec3 tan ch\u1ea3y v\u00e0 t\u00e1i ch\u1ebf; v\u00e0 n\u00f3 l\u00e0 sinh th\u00e1i an to\u00e0n v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi tr\u00e1i \u0111\u1ea5t.<\/p>\n

H\u1ea7u h\u1ebft 60 l\u1edbp th\u00e9p kh\u00f4ng g\u1ec9 kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 t\u1eeb t\u00ednh c\u1ee7a ch\u00fang, t\u1ef7 l\u1ec7 cr\u00f4m, v\u00e0 t\u1ef7 l\u1ec7 c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c.\u00a0Trong v\u1eadt li\u1ec7u th\u00e9p, cacbon v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ch\u1ea5t l\u00e0m c\u1ee9ng.\u00a0\u0110\u1ed9 c\u1ee9ng, \u0111\u1ed9 \u0111\u00e0n h\u1ed3i, \u0111\u1ed9 d\u1ebbo v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a th\u00e9p \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi c\u00e1c l\u01b0\u1ee3ng h\u1ee3p kim kh\u00e1c nhau v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a ch\u00fang trong th\u00e9p.\u00a0\u0110\u1ec3 t\u0103ng \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n, th\u00eam h\u00e0m l\u01b0\u1ee3ng carbon.<\/p>\n

T\u00f3m l\u01b0\u1ee3c:<\/strong><\/span><\/h3>\n

\u2013 T\u00e1ch c\u00e1c t\u1ea1p ch\u1ea5t kh\u1ecfi s\u1eaft t\u1ea1o ra th\u00e9p v\u00e0 th\u00eam c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c nhau t\u1ea1o ra th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n

\u2013 Th\u00e9p l\u00e0 t\u1eeb t\u00ednh, v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 kh\u00f4ng t\u1eeb t\u00ednh, ngo\u1ea1i tr\u1eeb m\u1ed9t s\u1ed1 l\u1edbp th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh.<\/p>\n

\u2013 H\u00e0m l\u01b0\u1ee3ng carbon c\u1ee7a n\u00f3 nh\u01b0 cao, trung b\u00ecnh v\u00e0 th\u1ea5p ph\u00e2n lo\u1ea1i th\u00e9p.<\/p>\n

\u2013 C\u00f3 b\u1ed1n lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9, v\u00e0 g\u1ea7n s\u00e1u m\u01b0\u01a1i l\u1edbp c\u00f3 s\u1eb5n.<\/p>\n

\u2013 Th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 kh\u00f4ng \u0103n m\u00f2n v\u00e0 tr\u00e1i \u0111\u1ea5t th\u00e2n thi\u1ec7n, v\u00e0 th\u00e9p l\u00e0 d\u1ec5 b\u1ecb v\u1ebft b\u1ea9n v\u00e0 r\u1ec9 s\u00e9t.<\/p>\n

Ph\u00e2n lo\u1ea1i th\u00e9p v\u1edbi th\u00e9p nh\u1eb9<\/strong><\/span><\/h2>\n

S\u1ef1 kh\u00e1c nhau gi\u1eefa\u00a0th\u00e9p\u00a0v\u00e0 th\u00e9p nh\u1eb9 l\u00e0 g\u00ec?\u00a0Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 ngh\u0129 r\u1eb1ng \u0111\u00f3 l\u00e0 t\u1ea5t c\u1ea3 trong t\u00ean. Nh\u01b0ng \u0111i\u1ec1u n\u00e0y ch\u1eafc ch\u1eafn kh\u00f4ng ph\u1ea3i l\u00e0 tr\u01b0\u1eddng h\u1ee3p \u0111\u00f3.\u00a0C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 gi\u1eefa\u00a0th\u00e9p\u00a0v\u00e0 th\u00e9p nh\u1eb9.<\/p>\n

N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng c\u00e1i n\u00e0y hay c\u00e1i kia, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 b\u1ea1n ph\u1ea3i ch\u1eafc ch\u1eafn r\u1eb1ng b\u1ea1n c\u00f3 c\u00e1i th\u00edch h\u1ee3p cho d\u1ef1 \u00e1n m\u00e0 b\u1ea1n c\u00f3 trong tay.\u00a0N\u1ebfu kh\u00f4ng, c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 b\u1ecb t\u1ed5n h\u1ea1i.\u00a0B\u00e2y gi\u1edd ch\u00fang ta \u0111\u00e3 hi\u1ec3u \u0111i\u1ec1u \u0111\u00f3, ch\u00fang ta s\u1ebd xem x\u00e9t k\u1ef9 h\u01a1n hai lo\u1ea1i kim lo\u1ea1i n\u00e0y?<\/p>\n

Ph\u00e2n lo\u1ea1i th\u00e9p th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u00f4ng qua vi\u1ec7c s\u1eed d\u1ee5ng h\u00e0m l\u01b0\u1ee3ng carbon c\u1ee7a n\u00f3. <\/strong><\/span><\/h3>\n

Ph\u00e2n lo\u1ea1i th\u00e9p carbon cao th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t d\u1ee5ng c\u1ee5 c\u1eaft.\u00a0Do \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 c\u1ee9ng ho\u00e0n to\u00e0n c\u1ee7a n\u00f3, n\u00f3 c\u0169ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho x\u00e2y d\u1ef1ng c\u0169ng nh\u01b0 c\u00e1c h\u00ecnh th\u1ee9c c\u1ea5u tr\u00fac; do kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00f4ng c\u1ee5 v\u00e0 h\u00e0n.<\/p>\n

Th\u00e9p h\u1ee3p kim hi\u1ec7n l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i th\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t. Nh\u01b0ng \u0111i\u1ec1u n\u00e0y c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee5c \u0111\u00edch c\u1ee7a m\u1ed9t lo\u1ea1i th\u00e9p c\u1ee5 th\u1ec3 s\u1ebd ph\u1ee5c v\u1ee5.\u00a0V\u00ed d\u1ee5, khi n\u00f3i \u0111\u1ebfn ch\u1ebf t\u1ea1o \u00f4 t\u00f4 c\u0169ng nh\u01b0 c\u00e1c b\u1ed9 ph\u1eadn m\u00e1y bay. Th\u00e9p crom \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng th\u01b0\u1eddng xuy\u00ean nh\u1ea5t do s\u1ee9c m\u1ea1nh; \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i c\u1ee7a n\u00f3.<\/p>\n

\"Ph\u00e2n<\/p>\n

Ch\u1ebf t\u1ea1o \u00f4 t\u00f4 l\u00e0 m\u1ed9t trong nh\u1eefng ng\u00e0nh \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng nhi\u1ec1u th\u00e9p cacbon nh\u1ea5t<\/span><\/h3>\n

M\u1ed9t \u0111i\u1ec1u m\u00e0 b\u1ea1n n\u00ean l\u01b0u \u00fd li\u00ean quan \u0111\u1ebfn th\u00e9p l\u00e0 kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c gi\u1ed1ng c\u1ee7a n\u00f3 l\u00e0 t\u1eeb t\u00ednh.\u00a0C\u00f3 l\u1ebd b\u1ea1n c\u00f3 th\u1ec3 \u0111\u00e3 \u0111\u1ecdc ho\u1eb7c nghe n\u00f3i v\u1ec1 ‘ki\u1ec3m tra nam ch\u00e2m’, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 n\u00f3i v\u1edbi th\u00e9p ngo\u00e0i c\u00e1c lo\u1ea1i kim lo\u1ea1i kh\u00e1c.\u00a0\u0110i\u1ec1u n\u00e0y kh\u00f4ng ph\u1ea3i lu\u00f4n lu\u00f4n \u00e1p d\u1ee5ng. Ch\u1eb3ng h\u1ea1n nh\u01b0 trong tr\u01b0\u1eddng h\u1ee3p th\u00e9p niken.\u00a0Th\u00e9p niken l\u00e0 kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh, thi\u1ebfu \u0111\u1ed9 gi\u00f2n c\u1ee7a th\u00e9p cacbon cao. Nh\u01b0ng \u0111\u1ed3ng th\u1eddi, n\u00f3 c\u00f3 t\u00ednh ch\u1ea5t b\u1ec1n k\u00e9o gi\u1ed1ng nhau.\u00a0\u0110\u1ec3 n\u00f3i gi\u1ed1ng th\u00e9p nonmagnetic ngo\u00e0i c\u00e1c lo\u1ea1i kim lo\u1ea1i, b\u1ea1n c\u00f3 th\u1ec3\u00a0mu\u1ed1n\u00a0xem x\u00e9t ki\u1ec3m tra m\u1eadt \u0111\u1ed9 c\u1ee7a n\u00f3.\u00a0C\u00f3 m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t l\u1edbn.<\/p>\n

Th\u00e9p t\u1ea5m \u0111\u1ee5c l\u1ed7 nh\u1eb9<\/strong><\/span><\/h3>\n

M\u1eb7t kh\u00e1c, th\u00e9p nh\u1eb9 l\u00e0 m\u1ed9t lo\u1ea1t c\u00e1c h\u1ee3p kim th\u00e9p bao g\u1ed3m m\u1ed9t l\u01b0\u1ee3ng l\u1edbn carbon l\u00e0 m\u1ed9t trong nh\u1eefng th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a n\u00f3.\u00a0M\u1ed9t h\u1ee3p kim l\u00e0 m\u1ed9t h\u1ed7n h\u1ee3p c\u1ee7a kim lo\u1ea1i c\u0169ng nh\u01b0 phi kim lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 t\u00ednh ch\u1ea5t r\u1ea5t c\u1ee5 th\u1ec3.<\/p>\n

Th\u00e9p nh\u1eb9 kh\u00e1c v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 qua h\u00e0m l\u01b0\u1ee3ng crom. V\u00e0 c\u00f3 th\u1ec3 ph\u00e2n lo\u1ea1i th\u00e9p v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 qua \u0111\u00f3. Th\u00e9p kh\u00f4ng g\u1ec9 ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng cr\u00f4m cao h\u01a1n so v\u1edbi th\u00e9p nh\u1eb9 ho\u1eb7c carbon th\u00f4ng th\u01b0\u1eddng.\u00a0\u0110\u1ed1i v\u1edbi c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a n\u00f3, th\u00e9p nh\u1eb9 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 s\u1ef1 t\u0103ng m\u00e0u khi n\u00f3i \u0111\u1ebfn s\u1ee9c m\u1ea1nh, t\u00ednh d\u1ec5 u\u1ed1n, \u0111\u1ed9 d\u1ebbo v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd kh\u00e1c c\u1ee7a th\u00e9p.<\/p>\n

S\u1ef1 thay \u0111\u1ed5i n\u00e0y x\u1ea3y ra khi c\u00e1c th\u00e0nh ph\u1ea7n thay \u0111\u1ed5i.\u00a0Tuy nhi\u00ean, n\u00f3 v\u1eabn l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ee3p kim \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n c\u00f3.\u00a0N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 gi\u00f2n nh\u01b0 th\u00e9p cao c\u1ea5p, nh\u01b0ng \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a n\u00f3 l\u00e0 th\u1ea5p h\u01a1n.<\/p>\n

\"Ph\u00e2n<\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a th\u00e9p nh\u1eb9 c\u0169ng xu\u1ea5t hi\u1ec7n nhi\u1ec1u trong \u0111\u1eddi s\u1ed1ng th\u01b0\u1eddng ng\u00e0y<\/span><\/h3>\n

C\u00e1c ph\u00e2n lo\u1ea1i th\u00e9p nh\u1eb9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t \u1ed1ng; \u0111\u1ea1n, \u00e1o gi\u00e1p; d\u00e2y chuy\u1ec1n;\u00a0\u0111ai \u1ed1c\u00a0v\u00e0 bu l\u00f4ng; b\u1ea3n l\u1ec1, nam ch\u00e2m; d\u00e2y, c\u00e1p v\u00e0 dao.\u00a0N\u00f3 c\u0169ng tr\u1edf n\u00ean m\u1ea1nh h\u01a1n n\u1ebfu b\u1ea1n b\u1ed5 sung th\u00eam cacbon v\u00e0o n\u00f3.\u00a0Ngo\u00e0i ra, khi n\u00f3i \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, th\u00e9p nh\u1eb9 d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi th\u00e9p.<\/p>\n

Khi thu mua thep phe lieu<\/strong><\/a>, c\u00e1c nh\u00e0 thu mua c\u0169ng d\u1ef1a v\u00e0o ph\u00e2n lo\u1ea1i lo\u1ea1i th\u00e9p \u0111\u1ec3 ch\u00e0o mua ph\u1ebf li\u1ec7u. C\u00e1c y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 d\u1ef1a tr\u00ean ph\u00e2n lo\u1ea1i theo \u0111\u1eb7c t\u00ednh, t\u00ednh ch\u1ea5t c\u1ee7a lo\u1ea1i ph\u1ebf li\u1ec7u. Nh\u01b0 nguy\u00ean li\u1ec7u t\u00e1i ch\u1ebf, nguy\u00ean li\u1ec7u t\u00e1i s\u1eed d\u1ee5ng, ho\u1eb7c \u0111\u1ec3 l\u00e0m nguy\u00ean ph\u1ee5 li\u1ec7u….<\/p>\n

V\u1ec1 c\u01a1 b\u1ea3n, th\u00e9p ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng cr\u00f4m \u0111\u1ee7 \u0111\u1ec3 gi\u00fap t\u1ea1o th\u00e0nh m\u1ed9t m\u00e0ng th\u1ee5 \u0111\u1ed9ng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb \u00f4xit cr\u00f4m gi\u00fap ng\u0103n ng\u1eeba s\u1ef1 \u0103n m\u00f2n th\u00eam.\u00a0C\u00f3 ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tr\u1ecb hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho th\u00e9p nh\u1eb9 c\u00f3 th\u1ec3 gi\u00fap tr\u00ec ho\u00e3n ho\u1eb7c ng\u0103n ch\u1eb7n ho\u00e0n to\u00e0n s\u1ef1 \u0103n m\u00f2n c\u1ee7a n\u00f3.<\/p>\n

T\u00f3m l\u01b0\u1ee3c:<\/strong><\/span><\/h3>\n

\u2013 Th\u00e9p l\u00e0 \u00edt d\u1ec5 u\u1ed1n v\u00e0 kh\u00f3 h\u01a1n th\u00e9p nh\u1eb9.<\/p>\n

\u2013 Th\u00e9p nh\u1eb9 \u00edt gi\u00f2n h\u01a1n th\u00e9p.<\/p>\n

\u2013 Th\u00e9p c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao h\u01a1n.<\/p>\n

\u2013 Th\u00e9p nh\u1eb9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng h\u01a1n n\u1eefa th\u00f4ng qua vi\u1ec7c b\u1ed5 sung cacbon.<\/p>\n

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\n <\/span>\n <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Sorry, this entry is only available in Ti\u1ebfng Vi\u1ec7t. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. Th\u00e9p hi\u1ec7n \u0111ang l\u00e0 kim lo\u1ea1i th\u00f4ng d\u1ee5ng nh\u1ea5t b\u1edfi nhi\u1ec1u t\u00ednh ch\u1ea5t \u01b0u vi\u1ec7t. Th\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong … Continue reading Ph\u00e2n lo\u1ea1i Th\u00e9p v\u00e0 th\u00e9p carbon, Th\u00e9p v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9, Th\u00e9p v\u00e0 th\u00e9p nh\u1eb9<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":3445,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[698,1],"tags":[3213,335,314,583,3238,3227,3241,316,3214,3212,3208,331,312,327,3242,3243,3244,317,2963,2964],"class_list":["post-3436","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thi-truong-phe-lieu","category-tin-tuc","tag-ban-phe-lieu-thep","tag-ban-phe-lieu-thep-gia-cao","tag-ban-thep","tag-cap-dien-loi-thep","tag-che-tao-kim-loai-thep","tag-gia-thi-truong-phe-lieu-thep","tag-hop-kim-thep","tag-mua-ban-thep","tag-mua-phe-lieu-thep","tag-phe-lieu-nhom-va-thep-khong-gi","tag-phe-lieu-thep","tag-thep-cac-loai","tag-thep-cat-hinh","tag-thep-cau-cang","tag-thep-va-thep-carbon","tag-thep-va-thep-khong-gi","tag-thep-va-thep-nhe","tag-thu-mua-thep","tag-thu-mua-thep-phe-lieu","tag-thu-mua-thep-phe-lieu-gia-cao"],"_links":{"self":[{"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/posts\/3436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/comments?post=3436"}],"version-history":[{"count":1,"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/posts\/3436\/revisions"}],"predecessor-version":[{"id":8361,"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/posts\/3436\/revisions\/8361"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/media\/3445"}],"wp:attachment":[{"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/media?parent=3436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/categories?post=3436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phelieu247.com\/en\/wp-json\/wp\/v2\/tags?post=3436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}