炼钢 ›› 2015, Vol. 31 ›› Issue (2): 21-25.

• 生产实践 • 上一篇    下一篇

410不锈钢小方坯表面纵裂的控制

王刚1,2   

  1. (1.邢台钢铁有限责任公司,河北 邢台 054027; 2.河北省线材工程技术研究中心,河北 邢台 054027)
  • 收稿日期:2014-06-26 修回日期:2014-07-15 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: 王刚 E-mail:98761-1109@163.com

Control on surface longitudinal crack of billet for 410 stainless steel

  • Received:2014-06-26 Revised:2014-07-15 Accepted:1900-01-01 Online:2015-04-05 Published:2015-04-23

摘要: 从410不锈钢表面纵裂形成的机理出发,通过采取优化钢水成分、调整结晶器水流量、优化保护渣理化性能和拉速等工艺措施,410不锈钢小方坯表面纵裂得到了有效的控制,且基本上杜绝了漏钢等生产事故的发生。铸坯的表面质量得到了大幅度的提升,铸坯表面纵裂发生率由11.24 %降为2.18 %,铸坯的修磨率降低了3.4 %。

关键词: 表面纵裂, 亚包晶钢, 结晶器, 热流密度

Abstract: To control longitudinal surface crack of 410 stainless steel billet,a few measures were employed such as composition optimization of molten steel, water flow rate adjustment of mould, chemical and physical properties improvement of mold powder and casting speed optimization,which was following the formation mechanism of surface longitudinal cracks of 410 stainless steel. As a result, the longitudinal surface cracks of 410 stainless steel was effectively controlled, production accidents as breakout were mainly avoided.Surface quality of slab was greatly enhanced,the surface longitudinal cracks in slab was decreased from 11.24 % to 2.18 %,the recondition rate of casting slab was reduced by 3.4 %.

Key words: surface longitudinal cracks, hypo-peritectic steel, mould, heat flux density