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 ›› 2009, Vol. 30 ›› Issue (3): 38-39.

• 工艺技术 • 上一篇    下一篇

120 t转炉-LF-RH-CC流程生产GCr15轴承钢的工艺和冶金质量

刘明1, 柯晓涛1, 邓通武1, 陈小龙2, 程书文2, 李叙生2, 蒲学坤2   

  1. 1攀枝花钢铁研究院,攀枝花617000;
    2攀枝花新钢机股份有限公司,攀枝花617067
  • 收稿日期:2008-11-04 出版日期:2009-06-01 发布日期:2022-11-24
  • 作者简介:刘 明(1963-),男,高级工程师,1983年重庆钢铁学校毕业,钢铁材料及炼钢工艺研究,

Processing and Metallurgical Quality of Bearing Steel GCr15 Produced by 120 t Converter-LF-RH-CC Flow Sheet

Liu Ming1 , Ke Xiaotao1, Deng Tongwu1, Chen Xiaolong2, Cheng Shuwen2, Li Xusheng2 ,Pu Xuekun1   

  1. 1 Panzhihua Iron and Steel Institute, Panzhihua 617000;
    2 Panzhihua New Steel & Vanadium Co Ltd, Panzhihua 617067
  • Received:2008-11-04 Published:2009-06-01 Online:2022-11-24

摘要: 攀钢采用铁水预处理-120 t顶底复吹转炉-LF-RH-280 mm×380 mm连铸工艺生产GCr15轴承钢。通过转炉采用挡渣技术和增碳法操作工艺,转炉终点碳0.03%~0.07%,出钢时加入含CaC2脱氧剂预脱氧,出钢后进行铝脱氧,LF精炼渣碱度CaO/SiO23.0~5.0,中间包平均钢水过热度为26.5℃。检验结果表明,铸坯的碳偏析指数为1.08,平均[O]为8×10-6,[P]≤0.015%,[S]≤0.011%,夹杂物级别满足标准要求。

关键词: 转炉-LF-RH-CC流程, GCr15轴承钢, 冶金质量

Abstract: Bearing steel GCrl5 is produced by hot metal pretreatment- 120 t top and bottom combined blown convert- er-LF-RH-280 mm X 380 mm CC process at Pan Steel. With converter recarburization practice and slag stopping technology during tapping, controlling converter end [C]:0. 03% ~0. 07% , adding deoxidizing agent containing CaC2 during tapping for pre-deoxidizing, deoxidizing by aluminium after tapping, controlling the basicity (CaO/SiO2) of LF refining slag 3. 0 ~ 5. 0, and average overheat of liquid steel in tundish = 26. 5℃ , the examination results showed that carbon segregation index was 1.08, average [0] 8x10-6, [P]≤0. 015%,[S]≤0.011%,and the rating of inclusion in steel met the requirement of standard.