| 预硬化塑料模具钢718厚板的开发 |
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| 引用本文： | 王生朝,孙斌. 预硬化塑料模具钢718厚板的开发[J]. 特殊钢, 2010, 31(5): 49-50 |
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| 作者姓名： | 王生朝 孙斌 |
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| 作者单位： | 湖南工业大学冶金工程学院，株洲 412000 |
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| 摘 要： | 开发的模具钢718(%:0.32～0.40C、0.30～0.50Si、1.00～1.50Mn、≤0.016P、≤0.005S、1.50～2.00Cr、0.40～0.50Mo、0.80～1.20Ni、0.020～0.045Al)198～308 mm厚板的生产工艺流程为90～100 t EAF-LFVD-40 t电渣重熔(950 mm×2 000 mm板坯)-轧制(控冷)-热处理。检验结果表明,钢中的P为0.009%～0.012%,S为0.001%～0.003%,钢中气体含量为(45～60)×10-6[N],1.5×10-6[H],(13～18)×10-6[O];钢板平均HB值为317～352,其组织为回火贝氏体+少量回火索氏体,满足各类模具的加工和表面质量要求。
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| 关 键 词： | 模具钢718 厚板 生产工艺 组织 硬度 |
| 收稿时间： | 2010-05-19 |
Development of Heavy Plate of Pre-hardened Plastic Die Steel 718 |
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| Wang Shengzhao,Sun Bin. Development of Heavy Plate of Pre-hardened Plastic Die Steel 718[J]. Special Steel, 2010, 31(5): 49-50 |
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| Authors: | Wang Shengzhao Sun Bin |
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| Affiliation: | School of Metallurgical Engineering, Hunan University of Technology, Zhuzhou 412000 |
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| Abstract: | The production process flow sheet for 198 〜308 mm heavy plate of developed die steel 718 ( % : 0.32〜0.40C, 0.30~0.50Si, 1.00~1.50Mn, ≤0.016P, ≤0.005S, 1.50~2.00Cr, 0.40-0.50Mo, 0.80~1.20Ni, 0.020-0.045Al) is 90 ~ 100 t EAF-LF-VD-40 t ESR (950 mm x 2 000 mm slab) -rolling (control cooling) -heat treatment. Examination results show that the P content in steel is 0.009%~0.012% , the S content is 0.001%~0.003% , and the gases contents are (45~60) x 10-6[N], 1.5 x 10-6[ H] and (13~18) x 10-6 [O] ； the average value of HB hardness is 317~352 with structure of tempered bainite + minor tempered sorbite to meet the requirement of workability and surface quality for various dies. |
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| Keywords: | Die Steel 718 Heavy Plate Production Process Structure Hardness |
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