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): 36-37.

• 工艺技术 • 上一篇    下一篇

防止S31803双相钢5 mm热连轧卷板边裂的工艺实践

李国平, 张威, 李俊, 范新智   

  1. 太原钢铁(集团)有限公司技术中心,太原030003
  • 收稿日期:2009-07-01 出版日期:2010-02-01 发布日期:2022-10-25
  • 作者简介:李国平(1975-),男,高级工程师,1995年内蒙古科技大学毕业,不锈钢新产品、新工艺研究。

Process Practice to Prevent Edge Crack of 5 mm Hot Continuous-Rolled Strip Coil of S31803 Duplex Stainless Steel

Li Guoping,  Zhang Wei,  Li Jun ,  Fan Xinzhi   

  1. Technical Center, Taiyuan Iron and Steel (Group) Co Ltd, Taiyuan 030003
  • Received:2009-07-01 Published:2010-02-01 Online:2022-10-25

摘要: S31803双相不锈钢(%:0.019C、22.50Cr、5.40Ni、3.15Mo、0.18N)200 mm连铸坯热轧成5 mm卷板易产生边裂。通过控制钢中S含量≤0.005%,加RE-Si-Fe合金变质硫化物,将钢中氧含量由53×100-6降至26×10-6,提高铸坯等轴晶比例,控制铸坯加热温度1150~1250℃,有效地防止5 mm热连轧卷板边裂的产生。

关键词: 双相不锈钢, 热连轧卷板, 边裂, 工艺改进

Abstract: Edge crack of 5 mm strip coil of S31803 duplex stainless steel ( % :0. 019C,22. 50Cr,5. 40Ni ,3. 15Mo, 0. 18N) rolled from 200 mm slab is often occurred. It is available to prevent the formation of edge crack of 5 mm hot continuous-rolled strip coil by controlling S content in steel ≤0. 005% and adding RE-Si-Fe alloy to modify sulfide, decreasing oxygen content in steel from 53 x 10 -6 to 26 x 10 -6, increasing equiaxed zone ratio in cast slab, and-controlling slab heating temperature at 1 150 - 1 250℃.

Key words: Material Index Duplex Stainless Steel, Hot Continuous-Rolled Strip Coil, Edge Crack, Process Improvement