{"id":20164,"date":"2025-01-02T02:23:00","date_gmt":"2025-01-01T18:23:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20164"},"modified":"2025-01-14T11:45:46","modified_gmt":"2025-01-14T03:45:46","slug":"1-2312","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/1-2312\/","title":{"rendered":"P20S | 1.2312 | Th\u00e9p d\u1ee5ng c\u1ee5 P20+S t\u1eeb Nh\u00e0 cung c\u1ea5p SteelPro Group"},"content":{"rendered":"<p>V\u1edbi g\u1ea7n 20 n\u0103m kinh nghi\u1ec7m, SteelPro Group cung c\u1ea5p th\u00e9p 1.2312 (P20S) cao c\u1ea5p \u1edf nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau, bao g\u1ed3m thanh tr\u00f2n, thanh vu\u00f4ng v\u00e0 t\u1ea5m. S\u1ef1 nh\u1ea5n m\u1ea1nh c\u1ee7a ch\u00fang t\u00f4i v\u00e0o s\u1ef1 xu\u1ea5t s\u1eafc v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i tu\u00e2n th\u1ee7 ch\u1ea5t l\u01b0\u1ee3ng h\u00e0ng \u0111\u1ea7u.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 1.2312 l\u00e0 g\u00ec?<\/h2><p>Th\u00e9p 1.2312 l\u00e0 th\u00e9p khu\u00f4n nh\u1ef1a ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n t\u1eeb <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/p20\/\">1.2311 th\u00e9p (P20)<\/a>, v\u1edbi kh\u1ea3 n\u0103ng gia c\u00f4ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n. N\u00f3 k\u1ebft h\u1ee3p Cr-Mn-Mo l\u00e0m th\u00e0nh ph\u1ea7n h\u1ee3p kim gia c\u01b0\u1eddng v\u00e0 h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh cao h\u01a1n (0,05-0,1%), gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1eaft. Th\u00e9p n\u00e0y cung c\u1ea5p t\u1ed1c \u0111\u1ed9 phay t\u0103ng 30% v\u00e0 t\u1ed1c \u0111\u1ed9 khoan t\u0103ng 300% so v\u1edbi 1,2311. N\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng khu\u00f4n nh\u1ef1a, \u00e9p phun v\u00e0 gia c\u00f4ng. Ch\u00fang t\u00f4i cung c\u1ea5p n\u00f3 \u1edf tr\u1ea1ng th\u00e1i \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng tr\u01b0\u1edbc (28-34 HRC).\u00a0<\/p><h2 class=\"wp-block-heading\">1.2312 Th\u00e9p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/h2><p>Sau \u0111\u00e2y l\u00e0 th\u00f4ng tin v\u1ec1 th\u00e9p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u1edf d\u1ea1ng b\u1ea3ng:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Ti\u00eau chu\u1ea9n<\/strong><\/td><td><strong>Th\u00e9p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/strong><\/td><\/tr><tr><td>GB\/T 1299<\/td><td>4Cr2Mn1MoS<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n ASTMA681<\/td><td>P20+S<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n DIN EN ISO 4957<\/td><td>1.2312<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n DIN17350<\/td><td>40CrMnMoS 8-6<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">1.2312 C\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 v\u00e0 ph\u1ea1m vi cung c\u1ea5p<\/h2><p>Ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p 1.2312 \u0111\u01b0\u1ee3c ki\u1ec3m tra c\u1ea9n th\u1eadn, \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n cao nh\u1ea5t c\u1ee7a ng\u00e0nh. C\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i tr\u1ea3i qua c\u00e1c ki\u1ec3m so\u00e1t dung sai nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u01b0\u1ee3t tr\u1ed9i.&nbsp;<\/p><p>Ngo\u00e0i c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea d\u01b0\u1edbi \u0111\u00e2y, ch\u00fang t\u00f4i r\u1ea5t vui l\u00f2ng cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh theo nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.&nbsp;<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>M\u1eabu s\u1ea3n ph\u1ea9m<\/strong><\/td><td><strong>Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc (H\u1ec7 m\u00e9t)<\/strong><\/td><td><strong>Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc (Anh)<\/strong><\/td><\/tr><tr><td rowspan=\"2\">Thanh tr\u00f2n<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 20 mm \u0111\u1ebfn 500 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 0,79\u2033 \u0111\u1ebfn 19,69\u2033<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 3000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 9,84\u2032<\/td><\/tr><tr><td rowspan=\"3\">\u0110\u0129a<\/td><td>\u0110\u1ed9 d\u00e0y: 5 mm \u0111\u1ebfn 150 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,20\u2033 \u0111\u1ebfn 5,91\u2033<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: 100 mm \u0111\u1ebfn 1000 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: 3,94\u2033 \u0111\u1ebfn 39,37\u2033<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 2000 mm \u0111\u1ebfn 6000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 78,74\u2033 \u0111\u1ebfn 236,22\u2033<\/td><\/tr><tr><td rowspan=\"3\">Thanh ph\u1eb3ng<\/td><td>\u0110\u1ed9 d\u00e0y: 10 mm \u0111\u1ebfn 100 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,39\u2033 \u0111\u1ebfn 3,94\u2033<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: 40 mm \u0111\u1ebfn 300 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: 1,57\u2033 \u0111\u1ebfn 11,81\u2033<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 3000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 118,11\u2033<\/td><\/tr><tr><td>Thanh vu\u00f4ng<\/td><td>K\u00edch th\u01b0\u1edbc: 20 mm \u0111\u1ebfn 150 mm<\/td><td>K\u00edch th\u01b0\u1edbc: 0,79\u2033 \u0111\u1ebfn 5,91\u2033 \u1edf m\u1ed7i b\u00ean<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">1.2312 Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Nguy\u00ean t\u1ed1 (Bi\u1ec3u t\u01b0\u1ee3ng)<\/strong><\/td><td><strong>Th\u00e0nh ph\u1ea7n<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.40 %<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>1.9 %<\/td><\/tr><tr><td>S\u1eaft (Fe)<\/td><td>95.628 \u2013 95.64 %, nh\u01b0 s\u1ed1 d\u01b0<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>1.5 %<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>0.20 %<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,012 %<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.30 %<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>0.060 %<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">\u01afu \u0111i\u1ec3m c\u1ee7a h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh trong th\u00e9p 1.2312<\/h3><p><strong>Kh\u1ea3 n\u0103ng gia c\u00f4ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n<\/strong>:Vi\u1ec7c b\u1ed5 sung l\u01b0u hu\u1ef3nh gi\u00fap th\u00e9p d\u1ec5 gia c\u00f4ng h\u01a1n, gi\u1ea3m hao m\u00f2n d\u1ee5ng c\u1ee5 v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 gia c\u00f4ng t\u1ed5ng th\u1ec3.<\/p><p><strong>\u0110\u1ed9 b\u1ec1n c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i<\/strong>:Kh\u1ea3 n\u0103ng gia c\u00f4ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n d\u1eabn \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a d\u1ee5ng c\u1ee5 d\u00e0i h\u01a1n, gi\u1ea3m thi\u1ec3u nhu c\u1ea7u thay th\u1ebf d\u1ee5ng c\u1ee5 th\u01b0\u1eddng xuy\u00ean v\u00e0 gi\u1ea3m th\u1eddi gian ch\u1ebft m\u00e1y.<\/p><p><strong>X\u1eed l\u00fd nhanh h\u01a1n<\/strong>:C\u00e1c \u0111\u1eb7c t\u00ednh c\u1eaft \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n cho ph\u00e9p t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd nhanh h\u01a1n, t\u0103ng n\u0103ng su\u1ea5t t\u1ed5ng th\u1ec3.<\/p><h3 class=\"wp-block-heading\">Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh trong th\u00e9p 1.2312<\/h3><p><strong>Gi\u1ea3m kh\u1ea3 n\u0103ng h\u00e0n<\/strong>: Do h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh cao h\u01a1n, h\u00e0n th\u00e9p 1.2312 c\u1ea7n \u0111\u01b0\u1ee3c ch\u0103m s\u00f3c \u0111\u1eb7c bi\u1ec7t, v\u00ec l\u01b0u hu\u1ef3nh c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn n\u1ee9t ngu\u1ed9i. C\u1ea7n c\u00f3 nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t tr\u01b0\u1edbc\/sau cao h\u01a1n (350\u00b0C \u2013 660\u00b0F) \u0111\u1ec3 tr\u00e1nh v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p><p><strong>Th\u00e1ch th\u1ee9c v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t<\/strong>: L\u01b0u hu\u1ef3nh c\u00f3 th\u1ec3 l\u00e0m cho b\u1ec1 m\u1eb7t th\u00f4 h\u01a1n, khi\u1ebfn n\u00f3 kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u00e1nh b\u00f3ng ch\u1ea5t l\u01b0\u1ee3ng cao. N\u00f3 c\u0169ng l\u00e0m cho qu\u00e1 tr\u00ecnh kh\u1eafc v\u00e0 EDM k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n, do \u0111\u00f3, c\u00e1c lo\u1ea1i th\u00e9p thay th\u1ebf nh\u01b0 1.2311 ho\u1eb7c 1.2738 \u0111\u01b0\u1ee3c \u01b0u ti\u00ean cho c\u00e1c y\u00eau c\u1ea7u v\u1ec1 b\u1ec1 m\u1eb7t m\u1ecbn.<\/p><p><strong>\u0110\u1ed9 b\u1ec1n gi\u1ea3m<\/strong>:H\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh cao c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m nh\u1eb9 \u0111\u1ed9 d\u1ebbo dai v\u00e0 \u0111\u1ed9 d\u1ebbo t\u1ed5ng th\u1ec3 c\u1ee7a th\u00e9p, khi\u1ebfn th\u00e9p d\u1ec5 gi\u00f2n h\u01a1n trong m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh.<\/p><h2 class=\"wp-block-heading\">1.2312 T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>T\u1ec9 tr\u1ecdng<\/td><td>7,83 g\/cc<\/td><td>0,283 lb\/in\u00b3<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>34,0 W\/m\u00b7K<\/td><td>236 BTU\u00b7in\/gi\u1edd\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>1425-1470 \u00b0C<\/td><td>2597-2678 \u00b0F<\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>0,46 J\/kg\u00b7K<\/td><td>0,11 BTU\/lb\u00b7\u00b0F<\/td><\/tr><tr><td>\u0110i\u1ec7n tr\u1edf su\u1ea5t<\/td><td>0,50 \u00b5\u03a9\u00b7cm<\/td><td>0,50 \u00d7 10\u207b\u2076 \u03a9\u00b7in<\/td><\/tr><\/tbody><\/table><\/figure><p>B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y ph\u00e1c th\u1ea3o h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (CTE) c\u1ee7a th\u00e9p 1.2312 \u1edf c\u00e1c kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>CTE (H\u1ec7 m\u00e9t)<\/strong><\/td><td><strong>CTE (\u0110\u1ebf qu\u1ed1c)<\/strong><\/td><td><strong>Nhi\u1ec7t \u0111\u1ed9 (M\u00e9t)<\/strong><\/td><td><strong>T\u00ednh kh\u00ed (Ho\u00e0ng gia)<\/strong><\/td><\/tr><tr><td>12,2 \u00b5m\/m-\u00b0C<\/td><td>6,80 \u00b5in\/in-\u00b0F<\/td><td>21,1 \u2013 93,3 \u00b0C<\/td><td>70,0 \u2013 200 \u00b0F<\/td><\/tr><tr><td>13,0 \u00b5m\/m-\u00b0C<\/td><td>7,20 \u00b5in\/in-\u00b0F<\/td><td>21,1 \u2013 204 \u00b0C<\/td><td>70,0 \u2013 400 \u00b0F<\/td><\/tr><tr><td>13,7 \u00b5m\/m-\u00b0C<\/td><td>7,60 \u00b5in\/in-\u00b0F<\/td><td>21,1 \u2013 302 \u00b0C<\/td><td>70,0 \u2013 575 \u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">1.2312 T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng<\/td><td>300 HB<\/td><td>300 HB<\/td><\/tr><tr><td>Gi\u1edbi h\u1ea1n ch\u1ea3y (Rp 0,2)<\/td><td>850MPa<\/td><td>123 kil\u00f4m\u00e9t<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o (Rm)<\/td><td>960MPa<\/td><td>139 kil\u00f4m\u00e9t<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i<\/td><td>10 %<\/td><td>10 %<\/td><\/tr><tr><td>Gi\u1ea3m Di\u1ec7n T\u00edch<\/td><td>45 %<\/td><td>45 %<\/td><\/tr><tr><td>N\u0103ng l\u01b0\u1ee3ng va ch\u1ea1m (KCV \u1edf 20\u00b0C)<\/td><td>20 th\u00e1ng<\/td><td>20 th\u00e1ng<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>205 GPa<\/td><td>29733 ksi<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t th\u00e9p c\u00f4ng c\u1ee5 1.2312<\/h2><p>Ch\u00fang t\u00f4i cung c\u1ea5p th\u00e9p 1.2312 \u1edf tr\u1ea1ng th\u00e1i \u1ee7, mang l\u1ea1i kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i. S\u1eb5n s\u00e0ng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u1ea5t c\u1ee7a b\u1ea1n, th\u00e9p \u0111\u00e3 qua x\u1eed l\u00fd nhi\u1ec7t c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 c\u1ee9ng t\u1ed1i \u01b0u v\u00e0 k\u1ebft qu\u1ea3 nh\u1ea5t qu\u00e1n, gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd sau.<\/p><h3 class=\"wp-block-heading\">R\u00e8n<\/h3><p>L\u00e0m n\u00f3ng th\u00e9p 1.2312 \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ban \u0111\u1ea7u l\u00e0 1050-1100\u00b0C (1922-2012\u00b0F) v\u00e0 r\u00e8n xu\u1ed1ng nhi\u1ec7t \u0111\u1ed9 cu\u1ed1i c\u00f9ng l\u00e0 850\u00b0C (1562\u00b0F). \u0110\u1ea3m b\u1ea3o t\u1ef7 l\u1ec7 r\u00e8n tr\u00ean 4:1 \u0111\u1ec3 v\u1eadt li\u1ec7u bi\u1ebfn d\u1ea1ng th\u00edch h\u1ee3p.&nbsp;<\/p><p>Sau khi r\u00e8n, h\u00e3y \u0111\u1ec3 th\u00e9p ngu\u1ed9i d\u1ea7n trong c\u00e1t. Ch\u00fang t\u00f4i c\u0169ng khuy\u00ean b\u1ea1n n\u00ean \u1ee7 sau khi r\u00e8n \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng gia c\u00f4ng.<\/p><h3 class=\"wp-block-heading\">\u1ee6<\/h3><p>L\u00e0m n\u00f3ng th\u00e9p 1.2312 \u0111\u1ebfn 760-790\u00b0C (1400-1454\u00b0F) v\u00e0 \u0111\u1ec3 ngu\u1ed9i trong l\u00f2. \u0110\u1ed9 c\u1ee9ng sau khi \u1ee7 kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 241 HB.&nbsp;<\/p><h3 class=\"wp-block-heading\">Gi\u1ea3m c\u0103ng th\u1eb3ng<\/h3><p>Gi\u1ea3m \u1ee9ng su\u1ea5t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong v\u1eadt li\u1ec7u. L\u00e0m n\u00f3ng th\u00e9p \u0111\u1ebfn 600-650\u00b0C (1112-1202\u00b0F) r\u1ed3i l\u00e0m ngu\u1ed9i trong kh\u00f4ng kh\u00ed. Qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u0111\u1ed9 c\u1ee9ng nh\u01b0ng c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc.<\/p><h3 class=\"wp-block-heading\">L\u00e0m c\u1ee9ng<\/h3><h4 class=\"wp-block-heading\"><strong>L\u00e0m n\u00f3ng tr\u01b0\u1edbc:<\/strong><\/h4><p>L\u00e0m n\u00f3ng tr\u01b0\u1edbc th\u00e9p 1.2312 \u1edf nhi\u1ec7t \u0111\u1ed9 840-860\u00b0C (1544-1580\u00b0F) \u0111\u1ec3 chu\u1ea9n b\u1ecb cho qu\u00e1 tr\u00ecnh t\u00f4i c\u1ee9ng.<\/p><h4 class=\"wp-block-heading\"><strong>Austenit h\u00f3a:<\/strong><\/h4><p>L\u00e0m n\u00f3ng th\u00e9p nhanh \u0111\u1ebfn 840-880\u00b0C (1544-1616\u00b0F) \u0111\u1ec3 austenit h\u00f3a. Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 n\u00e0y cho ph\u00e9p c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a th\u00e9p chuy\u1ec3n th\u00e0nh austenit, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 c\u1ee9ng t\u1ed1i \u0111a.<\/p><h4 class=\"wp-block-heading\"><strong>L\u00e0m ngu\u1ed9i:<\/strong><\/h4><p>Sau khi \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 austenit h\u00f3a, t\u00f4i th\u00e9p trong d\u1ea7u. T\u00f4i d\u1ea7u \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng v\u00ec n\u00f3 l\u00e0m m\u00e1t \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 gi\u1ea3m nguy c\u01a1 n\u1ee9t. \u0110\u1ed9 c\u1ee9ng t\u1ed1i \u0111a c\u1ee7a th\u00e9p sau khi t\u00f4i c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 52 HRC.<\/p><h3 class=\"wp-block-heading\">L\u00e0m ngu\u1ed9i<\/h3><p>Sau khi t\u00f4i, t\u00f4i th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 600-650\u00b0C (1112-1202\u00b0F). Gi\u1eef th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 n\u00e0y v\u00e0 l\u00e0m ngu\u1ed9i trong kh\u00f4ng kh\u00ed. T\u00f4i th\u00e9p l\u00e0m gi\u1ea3m \u0111\u1ed9 c\u1ee9ng xu\u1ed1ng c\u00f2n 28-36 HRC, c\u00e2n b\u1eb1ng \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 d\u1ebbo dai \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t.<\/p><p>Ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean t\u00f4i luy\u1ec7n g\u1ea5p \u0111\u00f4i \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 t\u1ed1i \u01b0u nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1i \u01b0u gi\u1eefa \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 d\u1ebbo dai.<\/p><p>Bi\u1ec3u \u0111\u1ed3 d\u01b0\u1edbi \u0111\u00e2y minh h\u1ecda \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p 1.2312 sau khi t\u00f4i \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u0110\u1ed9 c\u1ee9ng (HRC)<\/strong><\/td><td><strong>Nhi\u1ec7t \u0111\u1ed9 t\u00f4i luy\u1ec7n (\u00b0C)<\/strong><\/td><td><strong>Nhi\u1ec7t \u0111\u1ed9 t\u00f4i luy\u1ec7n (\u00b0F)<\/strong><\/td><\/tr><tr><td>51<\/td><td>100<\/td><td>212<\/td><\/tr><tr><td>50<\/td><td>200<\/td><td>392<\/td><\/tr><tr><td>48<\/td><td>300<\/td><td>572<\/td><\/tr><tr><td>45<\/td><td>400<\/td><td>752<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">Gia c\u00f4ng&nbsp;<\/h2><p>Th\u00e9p 1.2312 d\u1ec5 gia c\u00f4ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi s\u1eed d\u1ee5ng th\u00e9p t\u1ed1c \u0111\u1ed9 cao ho\u1eb7c d\u1ee5ng c\u1ee5 cacbua. Nh\u1edd h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, th\u00e9p n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng gia c\u00f4ng t\u1ed1t h\u01a1n so v\u1edbi th\u00e9p 1.2311. Sau \u0111\u00e2y l\u00e0 nh\u1eefng g\u00ec b\u1ea1n c\u00f3 th\u1ec3 mong \u0111\u1ee3i:<\/p><ul class=\"wp-block-list\"><li><strong>Cu\u1ed9c s\u1ed1ng c\u00f4ng c\u1ee5<\/strong>: B\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5 d\u00e0i h\u01a1n t\u1edbi 500% trong khi v\u1eabn duy tr\u00ec t\u1ed1c \u0111\u1ed9 c\u1eaft nh\u01b0 c\u0169.<\/li>\n\n<li><strong>T\u1ed1c \u0111\u1ed9 khoan<\/strong>: Vi\u1ec7c khoan tr\u1edf n\u00ean nhanh h\u01a1n nh\u1edd 300%.<\/li>\n\n<li><strong>T\u1ed1c \u0111\u1ed9 xay x\u00e1t<\/strong>: T\u1ed1c \u0111\u1ed9 phay t\u0103ng th\u00eam 30%.<\/li><\/ul><p>B\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1eaft t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho 1.2311, v\u1edbi m\u1ed9t s\u1ed1 n\u00e2ng c\u1ea5p th\u00fa v\u1ecb:<\/p><ul class=\"wp-block-list\"><li>D\u1ee5ng c\u1ee5 cacbua t\u0103ng t\u1ed1c \u0111\u1ed9 phay l\u00ean 30%.<\/li>\n\n<li>D\u1ee5ng c\u1ee5 b\u1eb1ng th\u00e9p t\u1ed1c \u0111\u1ed9 cao gi\u00fap khoan 300% nhanh h\u01a1n.<\/li><\/ul><p>Nh\u1eefng c\u1ea3i ti\u1ebfn n\u00e0y gi\u00fap gia c\u00f4ng th\u00e9p 1.2312 hi\u1ec7u qu\u1ea3 h\u01a1n, gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n.<\/p><h2 class=\"wp-block-heading\">1.2312 \u1ee8ng d\u1ee5ng th\u00e9p c\u00f4ng c\u1ee5<\/h2><p>Th\u00e9p 1.2312 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, \u0111\u1eb7c bi\u1ec7t l\u00e0 l\u00e0m khu\u00f4n nh\u1ef1a, do kh\u1ea3 n\u0103ng gia c\u00f4ng tuy\u1ec7t v\u1eddi, \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ecnh tr\u1ea1ng t\u00f4i c\u1ee9ng tr\u01b0\u1edbc. Sau \u0111\u00e2y l\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a th\u00e9p 1.2312:<\/p><ul class=\"wp-block-list\"><li>Khu\u00f4n \u00e9p phun<\/li>\n\n<li>Khu\u00f4n th\u1ed5i<\/li>\n\n<li>Khu\u00f4n \u00e9p<\/li>\n\n<li>Khu\u00f4n \u0111\u00fac khu\u00f4n<\/li>\n\n<li>Ch\u1ed1t\/Ch\u00e8n l\u00f5i<\/li><\/ul><h2 class=\"wp-block-heading\">M\u1edf kh\u00f3a to\u00e0n b\u1ed9 ti\u1ec1m n\u0103ng c\u1ee7a 1.2312 Steel c\u1ee7a b\u1ea1n&nbsp;<\/h2><p>V\u1edbi nhi\u1ec1u t\u00f9y ch\u1ecdn x\u1eed l\u00fd c\u00f3 s\u1eb5n, bao g\u1ed3m \u1ee7, l\u00e0m c\u1ee9ng tr\u01b0\u1edbc, th\u1ea5m nit\u01a1 v\u00e0 nghi\u1ec1n, ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00e9p 1.2312 c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng ch\u00ednh x\u00e1c c\u00e1c y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n. Ngo\u00e0i ra, ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/h13\/\">Th\u00e9p c\u00f4ng c\u1ee5 H13,<\/a> l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao.\u00a0<\/p><p>H\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i ngay h\u00f4m nay \u0111\u1ec3 t\u00ecm hi\u1ec3u c\u00e1ch ch\u00fang t\u00f4i c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n b\u1eb1ng chuy\u00ean m\u00f4n v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ee7a m\u00ecnh.<\/p>","protected":false},"excerpt":{"rendered":"<p>V\u1edbi g\u1ea7n 20 n\u0103m kinh nghi\u1ec7m, SteelPro Group cung c\u1ea5p th\u00e9p 1.2312 cao c\u1ea5p (P20S) d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau, bao g\u1ed3m thanh tr\u00f2n, vu\u00f4ng [\u2026]<\/p>","protected":false},"author":1,"featured_media":20160,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4294,4293],"tags":[],"class_list":["post-20164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grades-tool-steel","category-tool-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20164","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=20164"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20164\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20160"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}