{"id":20078,"date":"2024-12-25T03:16:00","date_gmt":"2024-12-24T19:16:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20078"},"modified":"2025-01-14T13:59:31","modified_gmt":"2025-01-14T05:59:31","slug":"m7","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/m7\/","title":{"rendered":"Th\u00e9p c\u00f4ng c\u1ee5 t\u1ed1c \u0111\u1ed9 cao M7: T\u00ednh ch\u1ea5t, quy tr\u00ecnh, c\u00f4ng d\u1ee5ng"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 M7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi c\u00e1c c\u00f4ng c\u1ee5 b\u1ec1n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u c\u1ee9ng. B\u00e0i vi\u1ebft n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c \u0111\u1eb7c t\u00ednh, \u1ee9ng d\u1ee5ng v\u00e0 x\u1eed l\u00fd nhi\u1ec7t c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7.&nbsp;<\/p><p class=\"wp-block-paragraph\">T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i cung c\u1ea5p th\u00e9p c\u00f4ng c\u1ee5 M7 \u1edf nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p t\u00f9y ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u00f4ng nghi\u1ec7p c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 M7 l\u00e0 g\u00ec?<\/h2><p class=\"wp-block-paragraph\">M7 l\u00e0 th\u00e9p c\u00f4ng c\u1ee5 t\u1ed1c \u0111\u1ed9 cao v\u1edbi th\u00e0nh ph\u1ea7n ch\u00ednh l\u00e0 vonfram-molypden v\u00e0 t\u0103ng c\u01b0\u1eddng coban, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, \u0111\u1ed9 c\u1ee9ng \u0111\u1ecf v\u00e0 \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1eb7c bi\u1ec7t. N\u00f3 r\u1ea5t ph\u00f9 h\u1ee3p \u0111\u1ec3 l\u00e0m d\u1ee5ng c\u1ee5 c\u1eaft, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u1ee9ng nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 h\u1ee3p kim cacbon cao.\u00a0<\/p><p class=\"wp-block-paragraph\">So v\u1edbi M2, M7 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 hi\u1ec7u su\u1ea5t c\u1eaft v\u01b0\u1ee3t tr\u1ed9i do h\u00e0m l\u01b0\u1ee3ng coban cao h\u01a1n. Kh\u1ea3 n\u0103ng l\u00e0m c\u1ee9ng s\u00e2u \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5 d\u00e0i h\u01a1n v\u00e0 gi\u1ea3m t\u1ea7n su\u1ea5t thay th\u1ebf.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 M7 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1i g\u00ec?<\/h2><p class=\"wp-block-paragraph\">C\u00e1c lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ph\u1ed5 bi\u1ebfn v\u1edbi M7 bao g\u1ed3m:<\/p><ul class=\"wp-block-list\"><li><strong>Ti\u00eau chu\u1ea9n ISO1.3343<\/strong> (Qu\u1ed1c t\u1ebf)<\/li>\n\n<li><strong>GB W18Cr4V<\/strong> (Trung Qu\u1ed1c)<\/li>\n\n<li><strong>Ti\u00eau chu\u1ea9n DIN 1.3343<\/strong> (\u0110\u1ee9c)<\/li>\n\n<li><strong>UNS T11307<\/strong> (Hoa K\u1ef3)<\/li>\n\n<li><strong>BS HS6-5-2C<\/strong> (Anh)<\/li>\n\n<li><strong>JIS SKH2<\/strong> (Nh\u1eadt B\u1ea3n)<\/li><\/ul><p class=\"wp-block-paragraph\">SteelPro Group cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 M7 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 <strong>Ti\u00eau chu\u1ea9n ASTMA600<\/strong> V\u00e0 <strong>FED QQ-T-590<\/strong>. Ch\u00fang t\u00f4i duy tr\u00ec c\u00e1c y\u00eau c\u1ea7u v\u1ec1 dung sai nghi\u00eam ng\u1eb7t v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng th\u00f4ng qua c\u00e1c quy tr\u00ecnh ki\u1ec3m tra v\u00e0 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd.<\/p><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7<\/h2><p class=\"wp-block-paragraph\">H\u00e0m l\u01b0\u1ee3ng molypden, vonfram v\u00e0 crom cao mang l\u1ea1i \u0111\u1ed9 c\u1ee9ng \u0111\u1ecf, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 hi\u1ec7u su\u1ea5t ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1eb7c bi\u1ec7t. L\u00e0 th\u00e9p c\u00f4ng c\u1ee5 g\u1ed1c molypden, h\u00e0m l\u01b0\u1ee3ng Mo t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ebbo dai nh\u01b0ng \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c h\u01a1n trong qu\u00e1 tr\u00ecnh t\u00f4i \u0111\u1ec3 tr\u00e1nh qu\u00e1 nhi\u1ec7t.<\/p><p class=\"wp-block-paragraph\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y chi ti\u1ebft th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.97 &#8211; 1.05 %<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>3.5 &#8211; 4.0 %<\/td><\/tr><tr><td>\u0110\u1ed3ng (Cu)<\/td><td>\u2264 0,25 %<\/td><\/tr><tr><td>S\u1eaft (Fe)<\/td><td>79.8 &#8211; 83.8 %<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>0.15 &#8211; 0.40 %<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>8.2 &#8211; 9.2 %<\/td><\/tr><tr><td>Niken (Ni)<\/td><td>\u2264 0,30 %<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,030 %<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.20 &#8211; 0.55 %<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u2264 0,030 %<\/td><\/tr><tr><td>Vonfram (W)<\/td><td>1.4 &#8211; 2.1 %<\/td><\/tr><tr><td>Vanadi (V)<\/td><td>1.75 &#8211; 2.25 %<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 M7 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t tuy\u1ec7t v\u1eddi, \u0111\u1ed9 b\u1ec1n cao v\u00e0 \u0111\u1ed9 d\u1eabn nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i. N\u00f3 c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p, gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t khi ti\u1ebfp x\u00fac v\u1edbi nh\u1eefng thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd ch\u00ednh c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>H\u1ec7 m\u00e9t<\/strong><\/td><td><strong>\u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>T\u1ec9 tr\u1ecdng<\/td><td>7,94 g\/cm\u00b3<\/td><td>0,287 lb\/in\u00b3<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>2.800\u00b0C<\/td><td>5.072\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>28 W\/m\u00b7K<\/td><td>19,4 BTU\/gi\u1edd\u00b7ft\u00b7\u00b0F\u00b7in<\/td><\/tr><tr><td>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (20\u2013100\u00b0C)<\/td><td>11,0 \u00b5m\/m\u00b7\u00b0C<\/td><td>6,1 x 10\u207b\u2076 in\/in\u00b7\u00b0F<\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>460 J\/kg\u00b7K<\/td><td>0,11 BTU\/lb\u00b7\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7<\/h2><p class=\"wp-block-paragraph\">H\u00e0m l\u01b0\u1ee3ng molypden, vonfram v\u00e0 crom cao cung c\u1ea5p cho th\u00e9p M7 \u0111\u1ed9 c\u1ee9ng \u0111\u1ecf, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1eb7c bi\u1ec7t. L\u00e0 th\u00e9p c\u00f4ng c\u1ee5 g\u1ed1c molypden, h\u00e0m l\u01b0\u1ee3ng Mo t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ebbo dai nh\u01b0ng \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c h\u01a1n trong qu\u00e1 tr\u00ecnh t\u00f4i \u0111\u1ec3 tr\u00e1nh qu\u00e1 nhi\u1ec7t.&nbsp;<\/p><p class=\"wp-block-paragraph\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc ch\u00ednh c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M42.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>H\u1ec7 m\u00e9t<\/strong><\/td><td><strong>\u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng (HRC)<\/td><td>42 &#8211; 66<\/td><td>42 &#8211; 66<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>207 GPa<\/td><td>30000 kil\u00f4gam<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i<\/td><td>8%<\/td><td>8%<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 Poisson<\/td><td>0.29<\/td><td>0.29<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td><td>45% &#8211; 50%<\/td><td>45% &#8211; 50%<\/td><\/tr><\/tbody><\/table><\/figure><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 M7 tr\u1ea3i qua nh\u1eefng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u1ec1 \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 d\u1ebbo dai khi ch\u1ecbu c\u00e1c \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd nhi\u1ec7t kh\u00e1c nhau. Khi nhi\u1ec7t \u0111\u1ed9 t\u00f4i t\u0103ng, \u0111\u1ed9 c\u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u c\u0169ng t\u0103ng, \u0111\u1ea1t \u0111\u1ec9nh kho\u1ea3ng 1.250\u00b0C (2.282\u00b0F). Ngo\u00e0i ra, qu\u00e1 tr\u00ecnh t\u00f4i luy\u1ec7n c\u00f2n t\u0103ng c\u01b0\u1eddng th\u00eam \u0111\u1ed9 d\u1ebbo dai c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7.&nbsp;<\/p><h2 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t th\u00e9p c\u00f4ng c\u1ee5 M7<\/h2><p class=\"wp-block-paragraph\">T\u1ea1i SteelPRO Group, ch\u00fang t\u00f4i cung c\u1ea5p d\u1ecbch v\u1ee5 x\u1eed l\u00fd nhi\u1ec7t chuy\u00ean nghi\u1ec7p cho th\u00e9p c\u00f4ng c\u1ee5 M7 \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ee7a th\u00e9p trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau. Cho d\u00f9 b\u1ea1n c\u1ea7n th\u00e9p M7 \u1edf tr\u1ea1ng th\u00e1i \u1ee7, t\u00f4i hay ram, c\u00e1c c\u01a1 s\u1edf ti\u00ean ti\u1ebfn c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd ch\u00ednh x\u00e1c, cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea1n.<\/p><h3 class=\"wp-block-heading\">\u1ee6<\/h3><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 M7 ph\u1ea3i \u0111\u01b0\u1ee3c \u1ee7 b\u1eb1ng c\u00e1ch nung n\u00f3ng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 t\u1eeb 843\u00b0C \u0111\u1ebfn 871\u00b0C (1550\u00b0F \u0111\u1ebfn 1600\u00b0F). Khi \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 n\u00e0y, gi\u1eef th\u00e9p trong \u00edt nh\u1ea5t m\u1ed9t gi\u1edd cho m\u1ed7i \u0111\u1ed9 d\u00e0y 25,4mm (1 inch), \u0111\u1ea3m b\u1ea3o th\u00e9p \u0111\u01b0\u1ee3c nung n\u00f3ng \u0111\u1ec1u.&nbsp;<\/p><p class=\"wp-block-paragraph\">Sau khi ng\u00e2m, th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i ch\u1eadm trong l\u00f2 v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00f4ng qu\u00e1 4\u00b0C (40\u00b0F) m\u1ed9t gi\u1edd cho \u0111\u1ebfn khi \u0111\u1ea1t 538\u00b0C (1000\u00b0F), sau \u0111\u00f3 ti\u1ebfp t\u1ee5c l\u00e0m ngu\u1ed9i \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.&nbsp;<\/p><p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0m m\u1ec1m th\u00e9p v\u00e0 gi\u00fap gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong, chu\u1ea9n b\u1ecb cho qu\u00e1 tr\u00ecnh gia c\u00f4ng ho\u1eb7c x\u1eed l\u00fd nhi\u1ec7t ti\u1ebfp theo.<\/p><h3 class=\"wp-block-heading\">L\u00e0m c\u1ee9ng<\/h3><p class=\"wp-block-paragraph\">L\u00e0m c\u1ee9ng l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh quan tr\u1ecdng \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 M7. C\u00e1c b\u01b0\u1edbc li\u00ean quan bao g\u1ed3m nung n\u00f3ng tr\u01b0\u1edbc, austenizing v\u00e0 l\u00e0m ngu\u1ed9i.<\/p><ul class=\"wp-block-list\"><li><strong>L\u00e0m n\u00f3ng tr\u01b0\u1edbc<\/strong><\/li><\/ul><p class=\"wp-block-paragraph\">Quy tr\u00ecnh gia nhi\u1ec7t tr\u01b0\u1edbc k\u00e9p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 gi\u1ea3m nguy c\u01a1 bi\u1ebfn d\u1ea1ng v\u00e0 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t trong c\u00e1c c\u00f4ng c\u1ee5 l\u1edbn ho\u1eb7c ph\u1ee9c t\u1ea1p. \u0110\u1ea7u ti\u00ean, th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c gia nhi\u1ec7t \u0111\u1ebfn 593\u00b0C (1100\u00b0F) v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00f4ng qu\u00e1 4\u00b0C (40\u00b0F) m\u1ed7i gi\u1edd, sau \u0111\u00f3 gia nhi\u1ec7t l\u1ea7n th\u1ee9 hai \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 t\u1eeb 788\u00b0C \u0111\u1ebfn 843\u00b0C (1450\u00b0F \u0111\u1ebfn 1550\u00b0F). \u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 nh\u1ecf h\u01a1n, ch\u1ec9 c\u1ea7n ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 th\u1ee9 hai \u0111\u1ec3 gia nhi\u1ec7t tr\u01b0\u1edbc.<\/p><ul class=\"wp-block-list\"><li><strong>Austenit h\u00f3a<\/strong><\/li><\/ul><p class=\"wp-block-paragraph\">Sau khi th\u00e9p \u0111\u00e3 \u0111\u01b0\u1ee3c nung n\u00f3ng tr\u01b0\u1edbc, c\u1ea7n ph\u1ea3i nung n\u00f3ng nhanh th\u00e9p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 austenit h\u00f3a t\u1eeb 1191\u00b0C \u0111\u1ebfn 1216\u00b0C (2175\u00b0F \u0111\u1ebfn 2220\u00b0F) trong l\u00f2.&nbsp;<\/p><p class=\"wp-block-paragraph\">\u0110\u1ec3 c\u00f3 \u0111\u1ed9 d\u1ebbo dai t\u1ed1i \u0111a, h\u00e3y s\u1eed d\u1ee5ng m\u1ee9c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n, trong khi \u0111\u1ec3 c\u00f3 \u0111\u1ed9 c\u1ee9ng m\u00e0u \u0111\u1ecf t\u1ed1i \u0111a, h\u00e3y s\u1eed d\u1ee5ng m\u1ee9c nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n. Th\u00e9p n\u00ean \u0111\u01b0\u1ee3c ng\u00e2m \u1edf nhi\u1ec7t \u0111\u1ed9 n\u00e0y trong 2 \u0111\u1ebfn 5 ph\u00fat \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed3ng nh\u1ea5t.<\/p><ul class=\"wp-block-list\"><li><strong>L\u00e0m ngu\u1ed9i<\/strong><\/li><\/ul><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 M7 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f4i b\u1eb1ng kh\u00ed n\u00e9n, d\u1ea7u ho\u1eb7c mu\u1ed1i. Qu\u00e1 tr\u00ecnh t\u00f4i bao g\u1ed3m c\u00e1c nhi\u1ec7t \u0111\u1ed9 c\u1ee5 th\u1ec3 sau cho t\u1eebng m\u00f4i tr\u01b0\u1eddng:<\/p><ul class=\"wp-block-list\"><li><strong>Kh\u00ed n\u00e9n<\/strong>: L\u00e0m ngu\u1ed9i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u01b0\u1edbi 538\u00b0C (1000\u00b0F) \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t c\u1ea7n thi\u1ebft. T\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 tr\u00e1nh bi\u1ebfn d\u1ea1ng.<\/li>\n\n<li><strong>D\u1ea7u<\/strong>: Sau khi austenit h\u00f3a, t\u00f4i th\u00e9p cho \u0111\u1ebfn khi \u0111\u1ea1t nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 482\u00b0C (900\u00b0F) r\u1ed3i l\u00e0m ngu\u1ed9i trong kh\u00f4ng kh\u00ed t\u0129nh cho \u0111\u1ebfn khi \u0111\u1ea1t nhi\u1ec7t \u0111\u1ed9 66-51\u00b0C (150-125\u00b0F).<\/li>\n\n<li><strong>Mu\u1ed1i<\/strong>: \u0110\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u00f4i mu\u1ed1i, duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 trong kho\u1ea3ng t\u1eeb 538\u00b0C \u0111\u1ebfn 593\u00b0C (1000\u00b0F \u0111\u1ebfn 1100\u00b0F), c\u00e2n b\u1eb1ng nhi\u1ec7t \u0111\u1ed9 tr\u01b0\u1edbc khi l\u00e0m ngu\u1ed9i th\u00e9p xu\u1ed1ng 66-51\u00b0C (150-125\u00b0F) trong kh\u00f4ng kh\u00ed t\u0129nh.<\/li><\/ul><p class=\"wp-block-paragraph\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00f4i n\u00e0y \u0111\u1ea3m b\u1ea3o th\u00e9p \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng mong mu\u1ed1n \u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u m\u1ecdi nguy c\u01a1 bi\u1ebfn d\u1ea1ng ho\u1eb7c n\u1ee9t.<\/p><h3 class=\"wp-block-heading\">L\u00e0m ngu\u1ed9i<\/h3><p class=\"wp-block-paragraph\">Sau khi t\u00f4i, qu\u00e1 tr\u00ecnh t\u00f4i luy\u1ec7n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 c\u1ee9ng v\u00e0 gi\u1ea3i ph\u00f3ng m\u1ecdi \u1ee9ng su\u1ea5t c\u00f2n s\u00f3t l\u1ea1i. Th\u00e9p c\u00f4ng c\u1ee5 M7 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00f4i luy\u1ec7n ngay sau khi t\u00f4i luy\u1ec7n. Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u00f4i luy\u1ec7n th\u00f4ng th\u01b0\u1eddng l\u00e0 t\u1eeb 551\u00b0C \u0111\u1ebfn 565\u00b0C (1025\u00b0F \u0111\u1ebfn 1050\u00b0F), trong \u0111\u00f3 th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1eef trong 2 gi\u1edd tr\u01b0\u1edbc khi l\u00e0m m\u00e1t b\u1eb1ng kh\u00f4ng kh\u00ed \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.&nbsp;<\/p><p class=\"wp-block-paragraph\">T\u00f4i luy\u1ec7n k\u00e9p l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc t\u1ed1i \u01b0u v\u00e0 t\u00f4i luy\u1ec7n ba \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho c\u00e1c b\u1ed9 ph\u1eadn ho\u1eb7c d\u1ee5ng c\u1ee5 c\u00f3 m\u1eb7t c\u1eaft ngang l\u1edbn ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a EDM (gia c\u00f4ng b\u1eb1ng tia l\u1eeda \u0111i\u1ec7n). T\u00f4i luy\u1ec7n l\u00e0m t\u0103ng \u0111\u1ed9 d\u1ebbo dai c\u1ee7a th\u00e9p trong khi v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng, gi\u00fap th\u00e9p ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p><h2 class=\"wp-block-heading\">H\u00ecnh d\u1ea1ng s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 M7<\/h2><p class=\"wp-block-paragraph\">SteelPRO Group cung c\u1ea5p nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 M7, bao g\u1ed3m thanh tr\u00f2n, thanh vu\u00f4ng, thanh ph\u1eb3ng, r\u00e8n v\u00e0 thanh khoan. Ngo\u00e0i c\u00e1c ph\u1ea1m vi k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea b\u00ean d\u01b0\u1edbi, ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a kh\u00e1ch h\u00e0ng.<\/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>Thanh tr\u00f2n<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 5 mm \u0111\u1ebfn 300 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 0,20 in \u0111\u1ebfn 11,81 in<\/td><\/tr><tr><td>Thanh vu\u00f4ng<\/td><td>Chi\u1ec1u d\u00e0i c\u1ea1nh: 5 mm \u0111\u1ebfn 200 mm<\/td><td>Chi\u1ec1u d\u00e0i c\u1ea1nh: 0,20 in \u0111\u1ebfn 7,87 in<\/td><\/tr><tr><td rowspan=\"2\">Thanh ph\u1eb3ng<\/td><td>\u0110\u1ed9 d\u00e0y: 5 mm \u0111\u1ebfn 100 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,20 in \u0111\u1ebfn 3,94 in<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: l\u00ean \u0111\u1ebfn 500 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: l\u00ean \u0111\u1ebfn 19,69 in<\/td><\/tr><tr><td rowspan=\"2\">R\u00e8n<\/td><td>Tr\u00f2n: \u0110\u01b0\u1eddng k\u00ednh: 25 mm \u0111\u1ebfn 600 mm<\/td><td>Tr\u00f2n: 0,98 in \u0111\u1ebfn 23,62 in<\/td><\/tr><tr><td>T\u00f9y ch\u1ec9nh: l\u00ean \u0111\u1ebfn 1.000 mm<\/td><td>T\u00f9y ch\u1ec9nh: l\u00ean \u0111\u1ebfn 39,37 in<\/td><\/tr><tr><td rowspan=\"3\">T\u1ea5m &amp; T\u1ea5m<\/td><td>\u0110\u1ed9 d\u00e0y: 2 mm \u0111\u1ebfn 100 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,08 in \u0111\u1ebfn 3,94 in<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: l\u00ean \u0111\u1ebfn 1.500 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: l\u00ean \u0111\u1ebfn 59,06 in<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: l\u00ean \u0111\u1ebfn 3.000 mm<\/td><td>Chi\u1ec1u d\u00e0i: l\u00ean \u0111\u1ebfn 118,11 in<\/td><\/tr><tr><td rowspan=\"2\">Thanh khoan<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 3 mm \u0111\u1ebfn 50 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 0,12 in \u0111\u1ebfn 1,97 in<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: l\u00ean \u0111\u1ebfn 3.000 mm<\/td><td>Chi\u1ec1u d\u00e0i: l\u00ean \u0111\u1ebfn 118,11 in<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng th\u00e9p c\u00f4ng c\u1ee5 M7<\/h2><p class=\"wp-block-paragraph\">SteelPRO Group cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 M7 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. \u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, M7 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c c\u00f4ng c\u1ee5 c\u1eaft, c\u00f4ng c\u1ee5 t\u1ea1o h\u00ecnh v\u00e0 khu\u00f4n. D\u01b0\u1edbi \u0111\u00e2y, ch\u00fang t\u00f4i ph\u00e1c th\u1ea3o c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a n\u00f3.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Lo\u1ea1i<\/strong><\/td><td><strong>S\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn<\/strong><\/td><\/tr><tr><td>D\u1ee5ng c\u1ee5 c\u1eaft<\/td><td><strong>M\u00e1y khoan, m\u00e1y phay, m\u00e1y doa, m\u00e1y ren<\/strong>v\u00e0 c\u00e1c d\u1ee5ng c\u1ee5 c\u1eaft kh\u00e1c d\u00f9ng \u0111\u1ec3 c\u1eaft v\u1eadt li\u1ec7u.<\/td><\/tr><tr><td>C\u00f4ng c\u1ee5 t\u1ea1o h\u00ecnh<\/td><td><strong>\u0110\u1ee5c, khu\u00f4n \u0111\u00f9n, khu\u00f4n u\u1ed1n<\/strong> \u0111\u1ec3 t\u1ea1o h\u00ecnh kim lo\u1ea1i v\u00e0 bi\u1ebfn d\u1ea1ng d\u1ebbo.<\/td><\/tr><tr><td>Khu\u00f4n v\u00e0 Khu\u00f4n \u0110\u00fac<\/td><td><strong>Khu\u00f4n \u00e9p phun, khu\u00f4n n\u00e9n, khu\u00f4n th\u1ed5i<\/strong> d\u00f9ng \u0111\u1ec3 \u0111\u00fac nh\u1ef1a v\u00e0 cao su.<\/td><\/tr><tr><td>C\u00e1c b\u1ed9 ph\u1eadn hao m\u00f2n<\/td><td><strong>L\u01b0\u1ee1i c\u1eaft, t\u1ea5m ch\u1ed1ng m\u00e0i m\u00f2n<\/strong> d\u00e0nh cho m\u00f4i tr\u01b0\u1eddng ch\u1ecbu m\u00e0i m\u00f2n cao trong qu\u00e1 tr\u00ecnh gia c\u00f4ng kim lo\u1ea1i.<\/td><\/tr><tr><td>Gia c\u00f4ng ngu\u1ed9i<\/td><td><strong>Khu\u00f4n r\u00e8n ngu\u1ed9i, khu\u00f4n \u0111\u1ed9t d\u1eadp ngu\u1ed9i<\/strong> cho c\u00e1c c\u00f4ng c\u1ee5 ch\u00ednh x\u00e1c trong qu\u00e1 tr\u00ecnh gia c\u00f4ng ngu\u1ed9i.<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">Gi\u1ea3i ph\u00e1p th\u00e9p c\u00f4ng c\u1ee5 M7 ch\u00ednh x\u00e1c v\u00e0 d\u1ecbch v\u1ee5 chuy\u00ean gia<\/h2><p class=\"wp-block-paragraph\">T\u1ea1i SteelPRO Group, ch\u00fang t\u00f4i chuy\u00ean v\u1ec1 th\u00e9p c\u00f4ng c\u1ee5 M7 ch\u1ea5t l\u01b0\u1ee3ng cao, cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m nh\u01b0 thanh tr\u00f2n, thanh vu\u00f4ng v\u00e0 r\u00e8n t\u00f9y ch\u1ec9nh. V\u1eadt li\u1ec7u c\u1ee7a ch\u00fang t\u00f4i ho\u00e0n h\u1ea3o cho c\u00e1c c\u00f4ng c\u1ee5 c\u1eaft, khu\u00f4n v\u00e0 d\u1ee5ng c\u1ee5 gia c\u00f4ng ngu\u1ed9i, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao. C\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i c\u0169ng bao g\u1ed3m <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/cr12mov\/\">Ng\u00e0y 2<\/a>, <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/w18cr4v\/\">T1<\/a>, V\u00e0 <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/h13\/\">H13<\/a> th\u00e9p c\u00f4ng c\u1ee5.<\/p><p class=\"wp-block-paragraph\">Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p d\u1ecbch v\u1ee5 gia c\u00f4ng ch\u00ednh x\u00e1c v\u00e0 x\u1eed l\u00fd nhi\u1ec7t, bao g\u1ed3m \u1ee7, t\u00f4i v\u00e0 ram. H\u00e3y \u0111\u1ec3 ch\u00fang t\u00f4i l\u00e0 \u0111\u1ed1i t\u00e1c c\u1ee7a b\u1ea1n trong vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 xu\u1ea5t s\u1eafc.<\/p><p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Th\u00e9p d\u1ee5ng c\u1ee5 M7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi d\u1ee5ng c\u1ee5 b\u1ec1n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u c\u1ee9ng. B\u00e0i vi\u1ebft n\u00e0y kh\u00e1m ph\u00e1 [\u2026]<\/p>","protected":false},"author":12,"featured_media":20067,"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-20078","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\/20078","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=20078"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20078\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20067"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20078"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20078"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20078"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}