炼钢 ›› 2015, Vol. 31 ›› Issue (2): 36-39.

• 试验研究 • 上一篇    下一篇

不同RH冶炼工艺对低碳铝镇静钢洁净度的影响

苏笃星   

  1. (江苏沙钢集团有限公司〓1.江苏省(沙钢)钢铁研究院,江苏 张家港 215625;2.宏发炼钢厂,江苏 张家港 215625)
  • 收稿日期:2014-07-29 修回日期:2014-10-08 接受日期:1900-01-01 出版日期:2015-04-05 发布日期:2015-04-23
  • 通讯作者: 苏笃星 E-mail:suduxing1986@126.com

Comparison of Cleanness of Low Carbon Aluminium Killed Steel with Different RH Refining Process

  • Received:2014-07-29 Revised:2014-10-08 Accepted:1900-01-01 Online:2015-04-05 Published:2015-04-23

摘要: 对比分析了生产低碳铝镇静钢采用RH两种不同处理模式的工艺特点和洁净度差异,结果表明:工艺路线1的RH到站渣中w(T.Fe+MnO)=5 %~12 %,而工艺路线2的RH到站渣中w(T.Fe+MnO)稳定控制在2 %以内,工艺路线1精炼 过程中w(Als)损失较工艺路线2高约54×10-6;工艺2夹杂物有效去除时间平均为64 min高于工艺路线1的 45 min;工艺路线1结晶器钢水w(T.O)较工艺路线2高13×10-6,工艺路线1结晶器钢液中的夹杂物分布面积比高于 工艺路线2,同时工艺路线1钢水样中,尺寸在5 μm以上的夹杂物占10.6 %,高于工艺路线2的3.6 %。针对不同RH精炼工艺分别提出了相应的优化措施。

关键词: 低碳铝镇静钢, RH精炼, 夹杂物

Abstract: The process characteristics and steel cleanness of lowcarbon aluminum killed steel under different RH process routes were discussed. The results showed that: the w(T.Fe+MnO)of route 1 was 5 %-12 %, while route 2 was under 2 %, besides the lost of acidsoluble aluminium for route 1 was 54×10-6 more than route 2. Effective removal time of inclusion under route 2 was 64 min more than 45 min of route 1, and the total oxygen at mold through process route 1 was 13×10-6 higher than that of route 2. The total inclusion ratio of route 1 was higher than that of the route 2, and for rout 1, it has 10.6 % of the inclusions bigger than 5 μm,while only 3.6 % for route 2.The optimization measures were put forward respectively according to the different RH refining process.

Key words: low carbon Al-killed steel, RH refining process, inclusion

中图分类号: