{"id":19820,"date":"2024-12-11T05:52:00","date_gmt":"2024-12-10T21:52:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=19820"},"modified":"2024-12-12T21:35:56","modified_gmt":"2024-12-12T13:35:56","slug":"o7","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/o7\/","title":{"rendered":"Th\u00e9p l\u00e0m vi\u1ec7c ngu\u1ed9i AISI O7: T\u00ednh ch\u1ea5t, x\u1eed l\u00fd nhi\u1ec7t v\u00e0 c\u00f4ng d\u1ee5ng"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 O7 l\u00e0 g\u00ec?<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 O7 l\u00e0 v\u1eadt li\u1ec7u l\u00e0m vi\u1ec7c ngu\u1ed9i h\u1ee3p kim cao, cacbon cao \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00ec \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng duy tr\u00ec \u0111\u1ed9 c\u1ee9ng v\u01b0\u1ee3t tr\u1ed9i trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 cao. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf d\u1ea1ng thanh, tr\u00f2n, t\u1ea5m v\u00e0 t\u1ea5m \u0111\u1ec3 ch\u1ebf t\u1ea1o d\u1ee5ng c\u1ee5 c\u1eaft, \u0111\u1ed9t, khu\u00f4n v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n khu\u00f4n. Sau khi x\u1eed l\u00fd nhi\u1ec7t, O7 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ed9 c\u1ee9ng 58-64 HRC.&nbsp;<\/p><p class=\"wp-block-paragraph\">SteelPro Group l\u00e0 nh\u00e0 cung c\u1ea5p chuy\u00ean nghi\u1ec7p th\u00e9p c\u00f4ng c\u1ee5 O7, cung c\u1ea5p nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m bao g\u1ed3m th\u00e9p c\u00f4ng c\u1ee5 O7 d\u1ea1ng tr\u00f2n, ph\u1eb3ng v\u00e0 t\u1ea5m. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p nhi\u1ec1u d\u1ecbch v\u1ee5 t\u00f9y ch\u1ec9nh theo y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n.<\/p><h3 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n:<\/h3><ul class=\"wp-block-list\"><li>T31507 c\u1ee7a UNS<\/li>\n\n<li>Ti\u00eau chu\u1ea9n ASTMA681<\/li>\n\n<li>FED QQ-T-570&nbsp;<\/li>\n\n<li>GB\/T1299<\/li><\/ul><h3 class=\"wp-block-heading\">\u0110i\u1ec3m t\u01b0\u01a1ng \u0111\u01b0\u01a1ng:<\/h3><ul class=\"wp-block-list\"><li>Ti\u00eau chu\u1ea9n SKS3<\/li>\n\n<li>GB GCr12&nbsp;<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 O7&nbsp;<\/h2><p class=\"wp-block-paragraph\">O7 c\u00f3 th\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 ch\u1ed1ng bi\u1ebfn d\u1ea1ng nhi\u1ec7t. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a vanadi v\u00e0 molypden l\u00e0m t\u0103ng th\u00eam kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, trong khi m\u1ee9c carbon \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ea3m b\u1ea3o s\u1ef1 k\u1ebft h\u1ee3p c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 d\u1ebbo dai.&nbsp;<\/p><p class=\"wp-block-paragraph\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y ph\u00e1c th\u1ea3o th\u00e0nh ph\u1ea7n nguy\u00ean t\u1ed1 c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 O7.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>Th\u00e0nh ph\u1ea7n<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>1.1 &#8211; 1.3 %<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>0.60 %<\/td><\/tr><tr><td>S\u1eaft (Fe)<\/td><td>94 %, nh\u01b0 c\u00e2n b\u1eb1ng<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>\u2264 1,0 %<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/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>\u2264 0,60 %<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u2264 0,030 %<\/td><\/tr><tr><td>Vonfram (W)<\/td><td>1.5 %<\/td><\/tr><tr><td>Vanadi (V)<\/td><td>\u2264 0,40 %<\/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 O7&nbsp;<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p d\u1ee5ng c\u1ee5 O7 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng tuy\u1ec7t v\u1eddi, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c d\u1ee5ng c\u1ee5 \u0111\u00f2i h\u1ecfi s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n.&nbsp;<\/p><p class=\"wp-block-paragraph\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 O7.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/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, Rockwell C<\/td><td>58 &#8211; 64<\/td><td>58 &#8211; 64<\/td><\/tr><tr><td>M\u00f4 \u0111un kh\u1ed1i<\/td><td>160 GPa<\/td><td>23200 ksi<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td><td>85 %<\/td><td>85 %<\/td><\/tr><tr><td>M\u00f4 \u0111un c\u1eaft<\/td><td>80,0 GPa<\/td><td>11600 ksi<\/td><\/tr><\/tbody><\/table><\/figure><ul class=\"wp-block-list\"><li><em>Kh\u1ea3 n\u0103ng gia c\u00f4ng c\u1ee7a th\u00e9p O7 d\u1ef1a tr\u00ean th\u00e9p c\u00f4ng c\u1ee5 t\u00f4i n\u01b0\u1edbc cacbon 1%.<\/em><\/li><\/ul><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 O7<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 O7 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc tuy\u1ec7t v\u1eddi v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng nhi\u1ec7t. Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed9c \u0111\u00e1o, hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t v\u00e0 \u0111\u1eb7c t\u00ednh gi\u00e3n n\u1edf \u0111\u1ea3m b\u1ea3o ch\u1ee9c n\u0103ng nh\u1ea5t qu\u00e1n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c kh\u00e1c nhau.&nbsp;<\/p><p class=\"wp-block-paragraph\">B\u1ea3ng sau \u0111\u00e2y n\u00eau b\u1eadt c\u00e1c thu\u1ed9c t\u00ednh v\u1eadt l\u00fd ch\u00ednh c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 O7.<\/p><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>7,80 g\/cm\u00b3<\/td><td>0,282 lb\/in\u00b3<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i (\u1edf 25\u00b0C)<\/td><td>190-210 GPa<\/td><td>27.557-30.458 kil\u00f4gam<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 Poisson (\u1edf 25\u00b0C)<\/td><td>0.27-0.30<\/td><td>0.27-0.30<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>41 W\/m\u00b7K<\/td><td>24 BTU\/gi\u1edd\u00b7ft\u00b7\u00b0F<\/td><\/tr><tr><td>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/td><td>11,2 \u00b5m\/m\u00b7\u00b0C<\/td><td>6,22 \u00b5in\/in\u00b7\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">O7 Ch\u1ebf t\u1ea1o th\u00e9p c\u00f4ng c\u1ee5 v\u00e0 x\u1eed l\u00fd nhi\u1ec7t<\/h2><h3 class=\"wp-block-heading\">R\u00e8n<\/h3><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 O7 ph\u1ea3i \u0111\u01b0\u1ee3c nung \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 900-1200\u00b0C (1652-2192\u00b0F) \u0111\u1ec3 r\u00e8n. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c r\u00e8n d\u01b0\u1edbi 790\u00b0C (1454\u00b0F), v\u00ec th\u00e9p c\u00f3 th\u1ec3 tr\u1edf n\u00ean gi\u00f2n.&nbsp;<\/p><h3 class=\"wp-block-heading\">\u1ee6<\/h3><p class=\"wp-block-paragraph\">nung n\u00f3ng \u0111\u1ec1u \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 t\u1eeb 790-815\u00b0C (1454-1499\u00b0F). Sau khi \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 m\u1ee5c ti\u00eau, \u0111\u1ec3 th\u00e9p ngu\u1ed9i t\u1eeb t\u1eeb trong l\u00f2 nung ho\u1eb7c m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t kh\u00e1c. T\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i th\u01b0\u1eddng v\u00e0o kho\u1ea3ng 4-5\u00b0C m\u1ed7i gi\u1edd (7,2-9\u00b0F m\u1ed7i gi\u1edd).<\/p><p class=\"wp-block-paragraph\">Sau khi \u1ee7, \u0111\u1ed9 c\u1ee9ng th\u01b0\u1eddng gi\u1ea3m xu\u1ed1ng c\u00f2n kho\u1ea3ng 217 HB (\u0110\u1ed9 c\u1ee9ng Brinell), gi\u00fap th\u00e9p d\u1ec5 gia c\u00f4ng h\u01a1n.<\/p><h3 class=\"wp-block-heading\">L\u00e0m c\u1ee9ng<\/h3><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 O7 \u0111\u01b0\u1ee3c nung n\u00f3ng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u trong kho\u1ea3ng 790-820\u00b0C (1454-1508\u00b0F). N\u1ebfu th\u00e9p c\u00f4ng c\u1ee5 c\u00f3 ti\u1ebft di\u1ec7n d\u00e0y, vi\u1ec7c nung n\u00f3ng tr\u01b0\u1edbc \u0111\u1ebfn 300-500\u00b0C (572-932\u00b0F) l\u00e0 c\u00f3 l\u1ee3i. Khi th\u00e9p \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 m\u1ee5c ti\u00eau, c\u1ea7n l\u00e0m ngu\u1ed9i nhanh trong d\u1ea7u. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra \u0111\u1ed9 c\u1ee9ng kho\u1ea3ng 58-64 HRC, t\u00f9y thu\u1ed9c v\u00e0o c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i.<\/p><h3 class=\"wp-block-heading\">L\u00e0m ngu\u1ed9i<\/h3><p class=\"wp-block-paragraph\">Sau khi t\u00f4i, th\u00e9p d\u1ee5ng c\u1ee5 O7 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00f4i \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 100-400\u00b0C (212-752\u00b0F). Th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 t\u00f4i trong \u00edt nh\u1ea5t 1 gi\u1edd cho m\u1ed7i 25mm (1 inch) \u0111\u1ed9 d\u00e0y.&nbsp;<\/p><p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 c\u1ee9ng \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean to\u00e0n b\u1ed9 v\u1eadt li\u1ec7u. \u0110\u1ed9 c\u1ee9ng thu \u0111\u01b0\u1ee3c sau khi t\u00f4i c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9, th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 50-64 HRC.<\/p><p class=\"wp-block-paragraph\">Sau \u0111\u00e2y l\u00e0 b\u1ea3ng tham kh\u1ea3o nhanh v\u1ec1 nhi\u1ec7t \u0111\u1ed9 t\u00f4i luy\u1ec7n v\u00e0 \u0111\u1ed9 c\u1ee9ng thu \u0111\u01b0\u1ee3c:<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Nhi\u1ec7t \u0111\u1ed9 (\u00b0C)<\/strong><\/td><td><strong>\u0110\u1ed9 c\u1ee9ng (HRC)<\/strong><\/td><\/tr><tr><td>100<\/td><td>64-63<\/td><\/tr><tr><td>150<\/td><td>63-62<\/td><\/tr><tr><td>200<\/td><td>62-61<\/td><\/tr><tr><td>250<\/td><td>60-59<\/td><\/tr><tr><td>300<\/td><td>56-55<\/td><\/tr><tr><td>400<\/td><td>50-49<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">O7 C\u00e1c h\u00ecnh th\u1ee9c s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5<\/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 O7 v\u1edbi nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n. Ngay c\u1ea3 khi y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n n\u1eb1m ngo\u00e0i ph\u1ea1m vi k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n, ch\u00fang t\u00f4i v\u1eabn c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p t\u00f9y ch\u1ec9nh \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u1eb7c bi\u1ec7t.<\/p><h3 class=\"wp-block-heading\">Thanh th\u00e9p d\u1ee5ng c\u1ee5 O7<\/h3><p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ebf t\u1ea1o tr\u1ee5c, ch\u1ed1t v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n h\u00ecnh tr\u1ee5 kh\u00e1c.<\/p><ul class=\"wp-block-list\"><li><strong>\u0110\u01b0\u1eddng k\u00ednh<\/strong>: 10 mm \u2013 300 mm (0,39 in \u2013 11,81 in)<\/li>\n\n<li><strong>Chi\u1ec1u d\u00e0i<\/strong>: 100 mm \u2013 4000 mm (3,94 in \u2013 157,48 in)<\/li><\/ul><h3 class=\"wp-block-heading\">V\u00f2ng th\u00e9p d\u1ee5ng c\u1ee5 O7<\/h3><p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t b\u00e1nh r\u0103ng, tr\u1ee5c v\u00e0 d\u1ee5ng c\u1ee5 quay.<\/p><ul class=\"wp-block-list\"><li><strong>\u0110\u01b0\u1eddng k\u00ednh<\/strong>: 20 mm \u2013 250 mm (0,79 in \u2013 9,84 in)<\/li>\n\n<li><strong>Chi\u1ec1u d\u00e0i<\/strong>: 500 mm \u2013 3000 mm (19,69 in \u2013 118,11 in)<\/li><\/ul><h3 class=\"wp-block-heading\">T\u1ea5m th\u00e9p d\u1ee5ng c\u1ee5 O7<\/h3><p class=\"wp-block-paragraph\">Th\u00edch h\u1ee3p \u0111\u1ec3 ch\u1ebf t\u1ea1o \u0111\u1ebf d\u1ee5ng c\u1ee5, t\u1ea5m khu\u00f4n v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n l\u1edbn y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao.<\/p><ul class=\"wp-block-list\"><li><strong>\u0110\u1ed9 d\u00e0y<\/strong>: 5 mm \u2013 200 mm (0,20 in \u2013 7,87 in)<\/li>\n\n<li><strong>Chi\u1ec1u r\u1ed9ng<\/strong>: 50 mm \u2013 2500 mm (1,97 in \u2013 98,43 in)<\/li>\n\n<li><strong>Chi\u1ec1u d\u00e0i<\/strong>: 200 mm \u2013 6000 mm (7,87 in \u2013 236,22 in)<\/li><\/ul><h3 class=\"wp-block-heading\">T\u1ea5m th\u00e9p c\u00f4ng c\u1ee5 O7<\/h3><p class=\"wp-block-paragraph\">Th\u00edch h\u1ee3p cho khu\u00f4n d\u1eadp, d\u1ee5ng c\u1ee5 c\u1eaft v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 th\u00e0nh m\u1ecfng.<\/p><ul class=\"wp-block-list\"><li><strong>\u0110\u1ed9 d\u00e0y<\/strong>: 0,5 mm \u2013 10 mm (0,02 in \u2013 0,39 in)<\/li>\n\n<li><strong>Chi\u1ec1u r\u1ed9ng<\/strong>: 100 mm \u2013 1500 mm (3,94 in \u2013 59,06 in)<\/li>\n\n<li><strong>Chi\u1ec1u d\u00e0i<\/strong>: 100 mm \u2013 4000 mm (3,94 in \u2013 157,48 in)<\/li><\/ul><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng th\u00e9p c\u00f4ng c\u1ee5 O7<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 O7 r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao, \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng duy tr\u00ec \u0111\u1ed9 c\u1ee9ng d\u01b0\u1edbi nhi\u1ec7t. \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh tuy\u1ec7t v\u1eddi trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng nhi\u1ec7t khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 ch\u1ebf t\u1ea1o d\u1ee5ng c\u1ee5 v\u00e0 s\u1ea3n xu\u1ea5t.<\/p><h3 class=\"wp-block-heading\">Khu\u00f4n v\u00e0 \u0110\u1ea5m<\/h3><p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1eadp v\u00e0 \u0111\u1ee5c khu\u00f4n, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a n\u00f3 gi\u00fap s\u1ea3n ph\u1ea9m b\u1ec1n b\u1ec9 trong \u0111i\u1ec1u ki\u1ec7n \u1ee9ng su\u1ea5t v\u00e0 va \u0111\u1eadp cao.<\/p><h3 class=\"wp-block-heading\">D\u1ee5ng c\u1ee5 c\u1eaft<\/h3><p class=\"wp-block-paragraph\">Th\u00edch h\u1ee3p cho dao, l\u01b0\u1ee1i dao v\u00e0 d\u1ee5ng c\u1ee5 c\u1eaft, O7 duy tr\u00ec \u0111\u1ed9 s\u1eafc b\u00e9n v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t c\u1eaft l\u00e2u d\u00e0i.<\/p><h3 class=\"wp-block-heading\">Linh ki\u1ec7n khu\u00f4n<\/h3><p class=\"wp-block-paragraph\">O7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho khu\u00f4n \u00e9p phun, v\u00ec \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c khu\u00f4n ph\u1ee9c t\u1ea1p, c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p><h3 class=\"wp-block-heading\">Gia c\u00f4ng c\u00e1c b\u1ed9 ph\u1eadn<\/h3><p class=\"wp-block-paragraph\">Th\u00edch h\u1ee3p cho b\u00e1nh r\u0103ng, tr\u1ee5c v\u00e0 \u1ed1ng l\u00f3t, \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a n\u00f3 l\u00e0m cho O7 b\u1ec1n b\u1ec9 cho c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu t\u1ea3i n\u1eb7ng, ch\u1ecbu m\u00e0i m\u00f2n cao.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p d\u1ee5ng c\u1ee5 O7 ch\u1ea5t l\u01b0\u1ee3ng cao<\/h2><p class=\"wp-block-paragraph\">T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i nh\u1eadn ra t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang t\u00f4i cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 O7 to\u00e0n di\u1ec7n, bao g\u1ed3m thanh, tr\u00f2n, t\u1ea5m v\u00e0 k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c c\u1ee7a b\u1ea1n. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p nhi\u1ec1u lo\u1ea1i <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/cr12mov\/\">Th\u00e9p c\u00f4ng c\u1ee5 cacbon cao D2<\/a>.<\/p><p class=\"wp-block-paragraph\"><strong>D\u1ecbch v\u1ee5 c\u1ee7a ch\u00fang t\u00f4i<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Ti\u1ec7n, phay v\u00e0 nghi\u1ec1n<\/li>\n\n<li>M\u00e0i \u0111\u1ec3 c\u00f3 k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c v\u00e0 b\u1ec1 m\u1eb7t nh\u1eb5n m\u1ecbn<\/li><\/ul><ul class=\"wp-block-list\"><li>\u1ee6 \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t<\/li>\n\n<li>L\u00e0m c\u1ee9ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 c\u1ee9ng mong mu\u1ed1n<\/li>\n\n<li>T\u00f4i luy\u1ec7n \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ebbo dai v\u00e0 \u0111\u1ed9 b\u1ec1n<\/li><\/ul><p class=\"wp-block-paragraph\">V\u1edbi SteelPro Group, b\u1ea1n c\u00f3 th\u1ec3 tin t\u01b0\u1edfng v\u00e0o th\u00e9p c\u00f4ng c\u1ee5 O7 ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 gia c\u00f4ng to\u00e0n di\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u01b0u!<\/p><p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Th\u00e9p d\u1ee5ng c\u1ee5 O7 l\u00e0 g\u00ec? Th\u00e9p d\u1ee5ng c\u1ee5 O7 l\u00e0 v\u1eadt li\u1ec7u gia c\u00f4ng ngu\u1ed9i h\u1ee3p kim cao, c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon cao \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i, [\u2026]<\/p>","protected":false},"author":12,"featured_media":19815,"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-19820","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\/19820","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=19820"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/19820\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/19815"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=19820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=19820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=19820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}