| 改善20CrMnTiH淬透性的研究 |
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| 引用本文： | 季春生,王忠诚,刘剑辉.改善20CrMnTiH淬透性的研究[J].北京科技大学学报,2007(Z1). |
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| 作者姓名： | 季春生 王忠诚 刘剑辉 |
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| 作者单位： | 北京科技大学冶金与生态工程学院，中国国际工程咨询公司，北京科技大学冶金与生态工程学院 北京100083莱芜钢铁股份有限公司，莱芜271104，北京100044，北京100083 |
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| 摘 要： | 莱钢特钢厂20CrMnTiH钢材成分波动较大,淬透性带HRC8～10,范围较大,制约了齿轮钢质量的进一步提高.通过研究,发现铸坯中心偏析尤其是碳偏析为主要问题.通过工艺优化采取各项措施,尤其增加电磁搅拌后,中心碳偏析得到明显改善;C控制在0.19%～0.20%的炉次达到了95.6%;淬透性带控制在HRC6内的达到了92.1%;在HRC4内的达到了86.2%;提高了产品质量,满足了用户需求.
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| 关 键 词： | 20CrMnTiH 铸坯 内部质量 电磁搅拌 |
Study of narrow hardenability bands of 20CrMnTiH |
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| JI Chunsheng,WANG Zhongcheng,Liu JianhuiMetallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing ,China Laiwu Iron and Steel Co.Ltd.,Laiwu ,China China International Engineering Consultation Co.,Beijing ,China.Study of narrow hardenability bands of 20CrMnTiH[J].Journal of University of Science and Technology Beijing,2007(Z1). |
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| Authors: | JI Chunsheng WANG Zhongcheng Liu JianhuiMetallurgical and Ecological Engineering School University of Science and Technology Beijing Beijing China Laiwu Iron and Steel CoLtd Laiwu China China International Engineering Consultation Co Beijing China |
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| Affiliation: | JI Chunsheng1,2),WANG Zhongcheng3),Liu Jianhui1)1)Metallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2)Laiwu Iron and Steel Co.Ltd.,Laiwu 271104,China 3)China International Engineering Consultation Co.,Beijing 100044,China |
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| Abstract: | The component fluctuation of 20CrMnTiH steel in Laiwu Special Steel Plant was large,the-hardenability bands belt was HRC 8-10,this constrained the further improvement of gear steel quality.Based on the research,it was found that center segregation especially carbon segregation in blooms was the major prob-lem.By taking measures,especially the increase of electromagnetic stirring,the center carbon segregation was markedly improved;C control between 0.19%~0.22% reached 95.6%;hardenability bands belt control in HRC 6 reached 92.1% and in HRC 4 reached 86.2%.The quality of products is improved and the needs of users are met. |
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| Keywords: | 20CrMnTiH bloom internal quality electromagnetic stirring |
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