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 ›› 2005, Vol. 26 ›› Issue (6): 47-49.

• 工艺技术 • 上一篇    下一篇

100t转炉-LF(VD)工艺冶炼轴承钢的氧含量控制

刘跃,吴伟,刘浏,赵继宇,吴建鹏,李小明,王建国   

  1. 钢铁研究总院工艺所,北京100081;
    武汉钢铁集团公司,武汉430080
  • 收稿日期:2005-06-06 出版日期:2005-11-08 发布日期:2023-04-13
  • 作者简介:刘跃(1958-),男,高级工程师,1982年武汉工学院毕 业,从事炼钢工艺、耐火材料研究。

Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 100 t Converter- LF (VD) Process

Liu Yue, Wu Wei ,Liu Liu,Zhao Jiyu, Wu Jianpeng, Li Xiaoming ,Wang Jianguo   

  1. Center Iron and Steel Research Institute, Beijing 100081;
    Wuhan Iron and Steel Group Corp, Wuhan 430080
  • Received:2005-06-06 Published:2005-11-08 Online:2023-04-13

摘要: 通过铁水预脱硫-100 t顶底复吹转炉-吹Ar-LF(VD)-方坯连铸工艺生产轴承钢的实践,得出冶炼终点钢水碳含量为0.2%~0.6%时,钢水氧含量在50×10-6到150×10-6之间;经出钢时脱氧、吹氩、LF(VD)精炼后,中间包钢水中的全氧含量为(14~16)×10-6,铸坯中的全氧量<12×10-6。分析表明,加强熔池搅拌,使钢渣充分反应,控制转炉下渣量<5 kg/t钢,加强吹氩搅拌,控制LF顶渣碱度在2.0~2.5之间,(FeO)+(MnO)小于0.5%,可使轴承钢中全氧量进一步降低。

关键词: 100t顶底复吹转炉, 轴承钢, 氧含量, 控制

Abstract: Through practice of bearing steel producing by hot metal pre-desulfurization - 100 t top and bottom combined blown converter - Ar stirring - LF(VD) - billet concasting process, it was obtained that with melting end point carbon between 0.2% and 0.6% , the oxygen content in steel was between 50 X 10-6 and 150 X 10-6 , by deoxidation in tapping, Ar stirring and LF(VD) refining, the total oxygen content in molten steel in tundish was between 14 x 10-6 and 16 x 10-6 and was less than 12 X 10-6 in cast billet. The analysis results show that it is available to further decrease the total oxygen content in bearing steel by intensifying bath stirring to make steel-slag enough react, and controlling BOF tapping slag amount less than 5 kg/t steel, intensifying Ar stirring, and controlling LF top slag basicity between 2.0 and 2.5 and (FeO) + (MnO) less than 0.5% .