| 莱钢LGP20CH预硬型模具钢的开发生产实践 |
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| 引用本文： | 吴会亮,衣忠文,霍孝新,黄少文. 莱钢LGP20CH预硬型模具钢的开发生产实践[J]. 山东冶金, 2013, 0(6): 17-18,20 |
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| 作者姓名： | 吴会亮 衣忠文 霍孝新 黄少文 |
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| 作者单位： | 莱芜钢铁集团有限公司技术中心,山东莱芜271104 |
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| 摘 要： | 通过合理的化学成分设计，采用转炉、LF、RH、连铸、控制轧制与预硬化热处理工艺，成功开发出LGP20CH模具用钢并批量生产。实物质量检验表明，钢板钢质纯净度高，主要为B类夹杂物，级别在1．5级以下，钢板组织为回火索氏体，晶粒度达到9级以上，100％超声波检验合格，无气孔、针眼缺陷；整张钢板硬度波动值不超过4HRC，完全满足用户使用要求。
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| 关 键 词： | 模具钢 LGP20CH 预硬化 热处理 硬度 |
Development and Production Practice of LGP20CH Pre-hardened Die Steel in Laiwu Steel |
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| WU Huiliang,YI Zhongwen,HUO Xiaoxin,HUANG Shaowen. Development and Production Practice of LGP20CH Pre-hardened Die Steel in Laiwu Steel[J]. Shandong Metallurgy, 2013, 0(6): 17-18,20 |
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| Authors: | WU Huiliang YI Zhongwen HUO Xiaoxin HUANG Shaowen |
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| Affiliation: | (The Technology Center of Laiwu Iron and Steel Group Corporation, Laiwu 271104, China) |
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| Abstract: | Through the reasonable chemical composition design and adopting the converter-LF-RH-continuous casting- controlled rolling-pre-hardening process, LGP2OCH die steel was successfully developed and was entered batch production now. The product quality inspection showed that the plates have a high purity with B type inclusions below 1.5 level, the microstructure of plates is tempered sorbite, the grain size of plates is above 9 grade, and all of plates have passed the ultrasonic testing, without blowhole, pinhole defects; Moreover, the hardness fluctuation of whole plate is within 4 HRC, completely meeting user＇s requirements. |
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| Keywords: | die steel LGP20CH pre-hardening heat treatment hardness |
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