ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2010, Vol. 31 ›› Issue (1): 24-27.

• 工艺技术 • 上一篇    下一篇

120 t LD-LF-RH-BCC流程生产齿轮钢的氧含量控制工艺

陈天明1, 杨素波1, 赵克文1,2, 王新华2, 曾建华1, 陈永1   

  1. 1攀枝花钢铁集团公司,攀枝花617000 ;
    2北京科技大学冶金与生态工程学院,北京100083
  • 收稿日期:2009-07-30 出版日期:2010-02-01 发布日期:2022-10-25
  • 作者简介:陈天明(1970-),男,硕士,高级工程师,1995年重庆大学毕业,精炼、连铸工艺和钢的质量控制。

Controlling Technology on Oxygen Content in Gear Steel Produced by 120 t LD-LF-RH-BCC Flow Sheet

Chen Tianming1 , Yang Subo1 , Zhao Kewen1,2, Wang Xinhua2, Zeng Jianhua1 ,  Chen Yong1   

  1. 1 Panzhihua Iron and Steel Group Co, Panzhihua 617000;
    2 Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083
  • Received:2009-07-30 Published:2010-02-01 Online:2022-10-25

摘要: 分析了齿轮钢中氧含量控制的关键技术:精炼渣SiO2含量,(CaO)/(Al2O3),(FeO+MnO),RH,氩气搅拌,连铸工艺。结合攀枝花新钢钒股份有限公司炼钢厂的工艺条件,通过控制转炉终点[C]≥0.10%,钢包渣厚50~80 mm,出钢过程加高碱度精炼渣,LF白渣精炼[渣中T.Fe-0.43%,(MnO+FeO)-0.93%,SiO2-5%,平均(CaO)/(Al2O3)-1.9],20 min RH处理,连铸保护浇铸等工艺措施,并在炉后平台,LF精炼和钙处理过程采用合适的吹氩模式,使20CrMoH齿轮钢铸坯总氧含量≤15×10-6,平均总氧含量为11.8×10-6

关键词: 20CrMoH齿轮钢, 转炉, 大方坯, 氧含量控制

Abstract: The key technology for controlling the oxygen content in gear steel is analyzed including SiO2 content in refining slag, (CaO)/( A12O3) , (FeO + MnO) , RH, Ar stirring and concasting process. Combined with process conditions at Vanadium Recovery and Steelmaking Plant, Panzhihua New Steel-Vanadium Co Ltd, with the process measures such as controlling converter end [C] ≥0. 10% , ladle slag thickness 50 ~ 80 mm and adding high basicity slag during tapping, LF white slag refining [ in slag T. Fe-0. 43% , ( MnO + FeO)-0. 93% , SiO2-5% , average (CaO)/(Al203 ) -1. 9] , RH treatment for 20 min, shielded continuous casting, and using suitable argon blowing models in ladle at back platform of converter, during LF refining and calcium treating, the total oxygen content in bloom of gear steel 20CrMoH is ≤15 X 10-6, and the average total oxygen content is 11. 8 x 10-6.

Key words: Gear Steel 20CrMoH, Converter, Bloom, Control of Oxygen Content