{"id":20473,"date":"2025-01-24T04:36:00","date_gmt":"2025-01-23T20:36:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20473"},"modified":"2025-01-21T10:12:04","modified_gmt":"2025-01-21T02:12:04","slug":"hardness-3","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/properties\/hardness\/","title":{"rendered":"Th\u00e9p c\u00f4ng c\u1ee5 c\u1ee9ng nh\u01b0 th\u1ebf n\u00e0o? S\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 d\u1ebbo dai"},"content":{"rendered":"<p>Sau khi x\u1eed l\u00fd nhi\u1ec7t, \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p d\u1ee5ng c\u1ee5 c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi <strong>50\u201370 HRC<\/strong>. \u1ede tr\u1ea1ng th\u00e1i \u1ee7, th\u00e9p d\u1ee5ng c\u1ee5 th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 c\u1ee9ng l\u00e0 <strong>150\u2013250 HB<\/strong>, d\u1ec5 gia c\u00f4ng th\u00eam. \u0110\u1ed9 c\u1ee9ng ch\u00ednh x\u00e1c c\u1ee7a n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 c\u1ee5 th\u1ec3 v\u00e0 qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t m\u00e0 n\u00f3 tr\u1ea3i qua.<\/p><p>Th\u00e9p c\u00f4ng c\u1ee5 n\u1ed5i b\u1eadt v\u1edbi \u0111\u1ed9 c\u1ee9ng \u1ea5n t\u01b0\u1ee3ng, l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u00f4ng c\u1ee5 c\u1eaft, khu\u00f4n m\u1eabu v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7u su\u1ea5t cao kh\u00e1c. T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i chuy\u00ean cung c\u1ea5p th\u00e9p c\u00f4ng c\u1ee5 \u1edf c\u1ea3 \u0111i\u1ec1u ki\u1ec7n \u1ee7 v\u00e0 t\u00f4i tr\u01b0\u1edbc.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 c\u1ee9ng \u0111\u1ebfn m\u1ee9c n\u00e0o?<\/h2><p>Th\u00e9p c\u00f4ng c\u1ee5 c\u1ee9ng h\u01a1n nhi\u1ec1u so v\u1edbi th\u00e9p m\u1ec1m ho\u1eb7c th\u00e9p k\u1ebft c\u1ea5u. Th\u00e9p n\u00e0y c\u1ea7n \u0111\u1ed9 c\u1ee9ng n\u00e0y \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c c\u00f4ng vi\u1ec7c kh\u00f3 kh\u0103n nh\u01b0 c\u1eaft v\u00e0 \u0111\u1ecbnh h\u00ecnh d\u01b0\u1edbi \u00e1p su\u1ea5t cao v\u00e0 m\u00e0i m\u00f2n. Do hi\u1ec7u su\u1ea5t cao, th\u00e9p c\u00f4ng c\u1ee5 gia c\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf tr\u1ea1ng th\u00e1i \u1ee7 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng gia c\u00f4ng t\u1ed1t h\u01a1n. \u0110\u1ed9 c\u1ee9ng cao c\u1ee7a th\u00e9p c\u0169ng c\u00f3 ngh\u0129a l\u00e0 th\u00e9p c\u00f3 th\u1ec3 gi\u00f2n n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c t\u00f4i luy\u1ec7n \u0111\u00fang c\u00e1ch.&nbsp;<\/p><h2 class=\"wp-block-heading\">Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p d\u1ee5ng c\u1ee5?<\/h2><h3 class=\"wp-block-heading\">Cacbon v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim<\/h3><p>H\u00e0m l\u01b0\u1ee3ng cacbon cao h\u01a1n trong th\u00e9p c\u00f4ng c\u1ee5 cho ph\u00e9p h\u00ecnh th\u00e0nh c\u00e1c cacbua c\u1ee9ng, gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 c\u1ee9ng t\u1ed5ng th\u1ec3. C\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim nh\u01b0 crom, vonfram v\u00e0 molypden l\u00e0m t\u0103ng th\u00eam \u0111\u1ed9 c\u1ee9ng b\u1eb1ng c\u00e1ch tinh ch\u1ec9nh c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a th\u00e9p v\u00e0 th\u00fac \u0111\u1ea9y s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c cacbua.<\/p><p>C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y c\u0169ng c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, gi\u00fap th\u00e9p c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p><h3 class=\"wp-block-heading\">Quy tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t<\/h3><p>X\u1eed l\u00fd nhi\u1ec7t th\u00e9p c\u00f4ng c\u1ee5 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 thay \u0111\u1ed5i \u0111\u1ed9 c\u1ee9ng cho ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau. C\u00e1c quy tr\u00ecnh ch\u00ednh bao g\u1ed3m:<\/p><p><strong>\u1ee6<\/strong><\/p><p>\u1ede tr\u1ea1ng th\u00e1i n\u00e0y, th\u00e9p c\u00f3 \u0111\u1ed9 c\u1ee9ng th\u1ea5p h\u01a1n, th\u01b0\u1eddng v\u00e0o kho\u1ea3ng 150\u2013250 HB.<\/p><p>\u1ee6 gi\u00fap c\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a th\u00e9p th\u01b0 gi\u00e3n, gi\u1ea3m \u1ee9ng su\u1ea5t v\u00e0 gi\u00fap \u0111\u1ecbnh h\u00ecnh v\u00e0 gia c\u00f4ng d\u1ec5 d\u00e0ng h\u01a1n. N\u00f3 c\u0169ng c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1ebbo c\u1ee7a th\u00e9p, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng tr\u01b0\u1edbc khi t\u00f4i ho\u1eb7c x\u1eed l\u00fd th\u00eam.<\/p><p><strong>L\u00e0m c\u1ee9ng<\/strong><\/p><p>Trong qu\u00e1 tr\u00ecnh l\u00e0m c\u1ee9ng v\u00e0 l\u00e0m ngu\u1ed9i, th\u00e9p d\u1ee5ng c\u1ee5 t\u1ea1o th\u00e0nh martensit, m\u1ed9t c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee9ng v\u00e0 gi\u00f2n, l\u00e0m t\u0103ng \u0111\u1ed9 c\u1ee9ng l\u00ean 50\u201370 HRC ho\u1eb7c cao h\u01a1n.<\/p><ul class=\"wp-block-list\"><li>L\u00e0m ngu\u1ed9i b\u1eb1ng n\u01b0\u1edbc: L\u00e0m ngu\u1ed9i trong n\u01b0\u1edbc r\u1ea5t nhanh v\u00e0 t\u1ea1o ra th\u00e9p r\u1ea5t c\u1ee9ng, th\u01b0\u1eddng v\u00e0o kho\u1ea3ng 55\u201370 HRC, nh\u01b0ng c\u00f3 th\u1ec3 g\u00e2y ra v\u1ebft n\u1ee9t do l\u00e0m ngu\u1ed9i nhanh.<\/li>\n\n<li>L\u00e0m ngu\u1ed9i b\u1eb1ng d\u1ea7u: L\u00e0m ngu\u1ed9i trong d\u1ea7u ch\u1eadm h\u01a1n l\u00e0m ngu\u1ed9i trong n\u01b0\u1edbc v\u00e0 l\u00e0m cho \u0111\u1ed9 c\u1ee9ng gi\u1ea3m \u0111i m\u1ed9t ch\u00fat, nh\u01b0ng n\u00f3 l\u00e0m gi\u1ea3m nguy c\u01a1 n\u1ee9t trong khi v\u1eabn t\u1ea1o ra th\u00e9p c\u1ee9ng.<\/li>\n\n<li>L\u00e0m ngu\u1ed9i b\u1eb1ng kh\u00f4ng kh\u00ed: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng kh\u00f4ng kh\u00ed \u0111\u1ec3 l\u00e0m ngu\u1ed9i th\u00e9p t\u1eeb t\u1eeb, t\u1ea1o ra \u0111\u1ed9 c\u1ee9ng v\u1eeba ph\u1ea3i, th\u01b0\u1eddng l\u00e0 kho\u1ea3ng 50\u201360 HRC, v\u1edbi \u00edt nguy c\u01a1 n\u1ee9t h\u01a1n.<\/li><\/ul><p><strong>L\u00e0m ngu\u1ed9i<\/strong><\/p><p>Qu\u00e1 tr\u00ecnh t\u00f4i luy\u1ec7n l\u00e0m gi\u1ea3m \u0111\u1ed9 gi\u00f2n b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i c\u1ea5u tr\u00fac martensite c\u1ee9ng th\u00e0nh c\u1ea5u tr\u00fac \u1ed5n \u0111\u1ecbnh h\u01a1n. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u00fap gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong, khi\u1ebfn th\u00e9p \u00edt c\u00f3 kh\u1ea3 n\u0103ng b\u1ecb n\u1ee9t trong khi v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ec1n. N\u00f3 l\u00e0m cho th\u00e9p c\u1ee9ng h\u01a1n v\u00e0 b\u1ec1n h\u01a1n \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p><h2 class=\"wp-block-heading\">\u0110\u1ed9 c\u1ee9ng c\u1ee7a c\u00e1c lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 kh\u00e1c nhau<\/h2><p>Th\u00e9p c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c chia th\u00e0nh s\u00e1u lo\u1ea1i ch\u00ednh d\u1ef1a tr\u00ean \u0111\u1eb7c \u0111i\u1ec3m x\u1eed l\u00fd nhi\u1ec7t v\u00e0 hi\u1ec7u su\u1ea5t. M\u1ed7i lo\u1ea1i c\u00f3 ph\u1ea1m vi \u0111\u1ed9 c\u1ee9ng \u0111i\u1ec3n h\u00ecnh \u1edf c\u00e1c giai \u0111o\u1ea1n kh\u00e1c nhau. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 t\u00f3m t\u1eaft d\u1eef li\u1ec7u \u0111\u1ed9 c\u1ee9ng cho t\u1eebng lo\u1ea1i:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5<\/strong><\/td><td><strong>\u0110\u1ed9 c\u1ee9ng \u1ee7 (HB)<\/strong><\/td><td><strong>\u0110\u1ed9 c\u1ee9ng khi t\u00f4i luy\u1ec7n (HRC)<\/strong><\/td><td><strong>\u0110\u1ed9 c\u1ee9ng t\u00f4i luy\u1ec7n (HRC)<\/strong><\/td><\/tr><tr><td>L\u00e0m c\u1ee9ng b\u1eb1ng n\u01b0\u1edbc (D\u00f2ng W)<\/td><td>200\u2013250<\/td><td>50\u201360<\/td><td>55\u201365<\/td><\/tr><tr><td>L\u00e0m vi\u1ec7c ngu\u1ed9i (D\u00f2ng O, A, D)<\/td><td>220\u2013250<\/td><td>58\u201364<\/td><td>55\u201360<\/td><\/tr><tr><td>Gia c\u00f4ng n\u00f3ng (D\u00f2ng H)<\/td><td>200\u2013250<\/td><td>50\u201355<\/td><td>55\u201360<\/td><\/tr><tr><td>Th\u00e9p t\u1ed1c \u0111\u1ed9 cao (D\u00f2ng M, T)<\/td><td>220\u2013250<\/td><td>60\u201370<\/td><td>58\u201365<\/td><\/tr><tr><td>Ch\u1ed1ng s\u1ed1c (D\u00f2ng S)<\/td><td>200\u2013250<\/td><td>50\u201360<\/td><td>55\u201360<\/td><\/tr><tr><td>Th\u00e9p c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng (D\u00f2ng L)<\/td><td>200\u2013250<\/td><td>55\u201365<\/td><td>55\u201360<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">Lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 c\u1ee9ng nh\u1ea5t l\u00e0 g\u00ec?<\/h3><p>Lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 c\u1ee9ng nh\u1ea5t l\u00e0 <strong>Th\u00e9p t\u1ed1c \u0111\u1ed9 cao (HSS)<\/strong>, \u0111\u1eb7c bi\u1ec7t <strong>D\u00f2ng M<\/strong> V\u00e0 <strong>D\u00f2ng T<\/strong> th\u00e9p. Nh\u1eefng lo\u1ea1i th\u00e9p n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 c\u1ee9ng <strong>65\u201370 HRC<\/strong>, l\u00e0m cho ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao. Ch\u00fang l\u00fd t\u01b0\u1edfng \u0111\u1ec3 c\u1eaft c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 m\u0169i khoan v\u00e0 dao phay.<\/p><h2 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5?<\/h2><p>N\u1ebfu b\u1ea1n mu\u1ed1n x\u00e1c nh\u1eadn \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p d\u1ee5ng c\u1ee5, ch\u00fang t\u00f4i c\u00f3 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb:<\/p><h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng m\u00e1y ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng Rockwell<\/h3><p>Ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t. M\u1ed9t vi\u00ean bi kim c\u01b0\u01a1ng ho\u1eb7c th\u00e9p \u0111\u01b0\u1ee3c \u00e9p v\u00e0o b\u1ec1 m\u1eb7t th\u00e9p v\u00e0 \u0111o \u0111\u1ed9 s\u00e2u c\u1ee7a v\u1ebft l\u00f5m. \u0110\u1ed1i v\u1edbi th\u00e9p c\u00f4ng c\u1ee5, HRC \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p><h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng m\u00e1y \u0111o \u0111\u1ed9 c\u1ee9ng Brinell<\/h3><p>M\u1ed9t qu\u1ea3 b\u00f3ng th\u00e9p l\u1edbn t\u1ea1o ra m\u1ed9t v\u1ebft l\u00f5m v\u00e0 k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c \u0111o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 c\u1ee9ng<\/p><h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng m\u00e1y \u0111o \u0111\u1ed9 c\u1ee9ng Vickers<\/h3><p>M\u1ed9t \u0111\u1ea7u kim t\u1ef1 th\u00e1p kim c\u01b0\u01a1ng \u0111\u01b0\u1ee3c \u1ea5n v\u00e0o th\u00e9p v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1ebft l\u00f5m \u0111\u01b0\u1ee3c \u0111o d\u01b0\u1edbi k\u00ednh hi\u1ec3n vi. N\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1eabu nh\u1ecf ho\u1eb7c m\u1ecfng.<\/p><h2 class=\"wp-block-heading\">C\u00e2n b\u1eb1ng \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 dai c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5<\/h2><p>N\u1ebfu th\u00e9p qu\u00e1 c\u1ee9ng, n\u00f3 c\u00f3 th\u1ec3 tr\u1edf n\u00ean gi\u00f2n v\u00e0 v\u1ee1 d\u01b0\u1edbi \u00e1p l\u1ef1c. V\u1eady, th\u00e9p c\u00f4ng c\u1ee5 c\u00e2n b\u1eb1ng \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 d\u1ebbo dai nh\u01b0 th\u1ebf n\u00e0o?<\/p><p>Ch\u00eca kh\u00f3a l\u00e0 <strong>h\u00e0m l\u01b0\u1ee3ng cacbon<\/strong>. Th\u00e9p c\u00f4ng c\u1ee5 v\u1edbi <strong>carbon th\u1ea5p h\u01a1n<\/strong>, gi\u1ed1ng <strong>H13<\/strong>, b\u1ec1n v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng g\u00e3y nh\u01b0ng v\u1eabn \u0111\u1ee7 c\u1ee9ng \u0111\u1ec3 s\u1eed d\u1ee5ng trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p.<\/p><p>C\u0169ng, <strong>nguy\u00ean t\u1ed1 h\u1ee3p kim<\/strong> gi\u1ed1ng <strong>crom<\/strong> V\u00e0 <strong>molypden<\/strong> c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t m\u00e0 kh\u00f4ng l\u00e0m th\u00e9p qu\u00e1 gi\u00f2n. C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y gi\u00fap t\u1ea1o th\u00e0nh cacbua c\u1ee9ng ch\u1ed1ng m\u00e0i m\u00f2n trong khi v\u1eabn gi\u1eef cho th\u00e9p \u0111\u1ee7 c\u1ee9ng \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t.<\/p><p>Ngo\u00e0i ra, qu\u00e1 tr\u00ecnh t\u00f4i luy\u1ec7n c\u00f2n gi\u00fap c\u00e2n b\u1eb1ng nh\u1eefng t\u00ednh ch\u1ea5t n\u00e0y.<\/p><h2 class=\"wp-block-heading\">Ch\u1ecdn \u0111\u1ed9 c\u1ee9ng ph\u00f9 h\u1ee3p cho th\u00e9p c\u00f4ng c\u1ee5 c\u1ee7a b\u1ea1n<\/h2><p>Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u1ed9 c\u1ee9ng ph\u00f9 h\u1ee3p cho th\u00e9p c\u00f4ng c\u1ee5 c\u1ee7a b\u1ea1n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o n\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t cho nhu c\u1ea7u c\u1ee7a b\u1ea1n. B\u00e2y gi\u1edd l\u00e0 l\u00fac ngh\u0129 v\u1ec1 vi\u1ec7c th\u00e9p s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0o m\u1ee5c \u0111\u00edch g\u00ec.<\/p><ul class=\"wp-block-list\"><li><strong>\u0110\u1ed1i v\u1edbi d\u1ee5ng c\u1ee5 c\u1eaft (v\u00ed d\u1ee5: m\u00e1y khoan, l\u01b0\u1ee1i dao)<\/strong>: \u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 c\u1ea7n ph\u1ea3i gi\u1eef s\u1eafc b\u00e9n, h\u00e3y ch\u1ecdn th\u00e9p c\u00f3 \u0111\u1ed9 c\u1ee9ng kho\u1ea3ng <strong>60\u201370 HRC<\/strong> (gi\u1ed1ng nh\u01b0 Th\u00e9p t\u1ed1c \u0111\u1ed9 cao).<\/li>\n\n<li><strong>D\u00e0nh cho khu\u00f4n v\u00e0 khu\u00f4n d\u1eadp<\/strong>: N\u1ebfu b\u1ea1n c\u1ea7n th\u00e9p cho khu\u00f4n ho\u1eb7c khu\u00f4n \u0111\u00fac ch\u1ecbu \u00e1p l\u1ef1c, h\u00e3y ch\u1ecdn \u0111\u1ed9 c\u1ee9ng kho\u1ea3ng <strong>55\u201365 HRC<\/strong> (gi\u1ed1ng nh\u01b0 Th\u00e9p c\u00f4ng c\u1ee5 gia c\u00f4ng ngu\u1ed9i).<\/li>\n\n<li><strong>\u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 t\u00e1c \u0111\u1ed9ng (v\u00ed d\u1ee5, b\u00faa, \u0111\u1ee5c)<\/strong>: N\u1ebfu th\u00e9p s\u1ebd ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec1u t\u00e1c \u0111\u1ed9ng, h\u00e3y ch\u1ecdn lo\u1ea1i th\u00e9p c\u00f3 \u0111\u1ed9 c\u1ee9ng th\u1ea5p h\u01a1n nh\u01b0ng \u0111\u1ed9 d\u1ebbo dai cao h\u01a1n, kho\u1ea3ng <strong>50\u201360HRC<\/strong> (gi\u1ed1ng nh\u01b0 Th\u00e9p c\u00f4ng c\u1ee5 ch\u1ed1ng s\u1ed1c).<\/li><\/ul><p>N\u1ebfu b\u1ea1n v\u1eabn ch\u01b0a ch\u1eafc ch\u1eafn n\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o, h\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i! Ch\u00fang t\u00f4i c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n ch\u1ecdn lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 t\u1ed1t nh\u1ea5t cho nhu c\u1ea7u c\u1ee7a b\u1ea1n.<\/p><h2 class=\"wp-block-heading\">Gi\u1ea3i ph\u00e1p v\u00e0 d\u1ecbch v\u1ee5 th\u00e9p c\u00f4ng c\u1ee5 c\u1ee7a ch\u00fang t\u00f4i<\/h2><p>SteelPro Group cung c\u1ea5p nhi\u1ec1u lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5, bao g\u1ed3m c\u00e1c lo\u1ea1i nh\u01b0 Th\u00e9p t\u1ed1c \u0111\u1ed9 cao M2, <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/cr12mov\/\">Th\u00e9p d\u1ee5ng c\u1ee5 gia c\u00f4ng ngu\u1ed9i D2<\/a>v\u00e0 Th\u00e9p ch\u1ed1ng s\u1ed1c S7. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p d\u1ecbch v\u1ee5 gia c\u00f4ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng ch\u00ednh x\u00e1c nhu c\u1ea7u c\u1ee7a b\u1ea1n v\u00e0 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 x\u1eed l\u00fd nhi\u1ec7t ho\u1eb7c t\u00f4i luy\u1ec7n.<\/p><p>H\u00e3y \u0111\u1ec3 ch\u00fang t\u00f4i gi\u00fap b\u1ea1n t\u00ecm v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p cho c\u00f4ng vi\u1ec7c.<\/p>","protected":false},"excerpt":{"rendered":"<p>Sau khi x\u1eed l\u00fd nhi\u1ec7t, \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 50\u201370 HRC. \u1ede tr\u1ea1ng th\u00e1i \u1ee7, th\u00e9p c\u00f4ng c\u1ee5 th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 c\u1ee9ng [\u2026]<\/p>","protected":false},"author":12,"featured_media":20462,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4305,4293],"tags":[],"class_list":["post-20473","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-properties-tool-steel","category-tool-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=20473"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20473\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20462"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}