ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2020, Vol. 41 ›› Issue (2): 18-20.

Special Issue: 轴承钢； 齿轮钢； 夹杂物控制

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Pilot Production of Gear Steel 20CrMnTiH to Control Oxygen Content and Inclusions in Steel

Wang Min1 , Guo Zhiqiang2   

  1. 1 Hubei Engineering Institute,Huangshi 435000；
    2 Technology Center,Fujian Sansteel Group Co Ltd,Sanming 365000
  • Received:2019-09-20 Online:2020-04-01 Published:2022-04-21

控制20CrMnTiH齿轮钢氧含量和夹杂物的生产试验

王敏1, 郭志强2   

  1. 1湖北工程职业学院，黄石435000；
    2福建省三钢(集团)有限责任公司技术中心，三明365000
  • 作者简介:王敏(1974-),男，副教授,2009年湖北工业大学硕士毕业,1997年中国(武汉)地质大学(本科)毕业,冶金机械专业教学及科研。

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Abstract: The process flowsheet for steel 20CrMnTiH is 100 t BOF-LF-VD-bloom casting-rolling. By improving converter tapping [C] ≥08% , optimizing refining slag system, controlling the CaO/Al2O3 in slag 1. 5 to 1. 7 ,using feeding SiCa wire to replace feeding Ca wire and preventing secondary oxidation of molten steel in casting, the oxygen content in gear steel 20CrMnTiH is 0.0015% ~0. 0019% and rating of inclusions in steel is ≤0.5.

摘要： 20CrMnTiH钢的工艺流程为100t转炉-LF-VD-方坯连铸-轧制。通过采取提高转炉出钢[C]≥0.08%,优化LF精炼渣系,控制渣中CaO/Al2O3 1.5～1.7,用喂SiCa线代替喂Ca线,防止钢水二次氧化等措施,20CrMnTiH齿轮钢氧含量0.0015%～0.0019%和夹杂物级别≤1.5。

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