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 ›› 2006, Vol. 27 ›› Issue (4): 47-49.

• 工艺技术 • 上一篇    下一篇

CSP 工艺生产热轧板卷边裂的分析和控制

孙彦辉1, 赵长亮1,  孟征兵2, 蔡开科1, 成小军2, 吴光亮2, 周春泉2   

  1. 1北京科技大学冶金与生态工程学院冶金研究中心,北京100083;
    2湖南华菱涟源钢铁有限公司,娄底417009
  • 收稿日期:2006-02-13 出版日期:2006-08-01 发布日期:2023-03-18
  • 作者简介:孙彦辉(1971-),男,博士,讲师,2002年北京科技大学毕业,电弧炉炼钢新技术及连铸工艺。

Control and Analysis on Edge Crack of Hot Rolled Strip Coil Produced by CSP Process

Sun Yanhui, Zhao Changliang, Meng Zhengbing1, Cai Kaike, Cheng Xiaojun2, Wu Guangliang2, Zhou Chunquan2   

  1. 1 Metallurgical Research Center, Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083;
    2 Lianyuan Iron and Steel Co Ltd, Loudi 417009
  • Received:2006-02-13 Published:2006-08-01 Online:2023-03-18

摘要: 经分析得出涟钢采用CSP工艺生产SS400钢板卷时,因不合理的二冷水量使70 mm薄板坯横向冷却不均匀和角部过冷,导致奥氏体中AlN析出造成晶界脆性,带钢在弯曲和矫直时产生边裂。通过控制钢中Al2含量为0.02%~0.03%及减少连铸过程吸氮和降低板坯边缘二冷水量等工艺措施,使SS400钢板卷的优等品率从92.27%提高到98.09%。

关键词: 薄板坯, 热轧板卷, 边 裂 , 控制工艺

Abstract: It is obtained by analysis that the edge cracks occur during bending and straightening of strip due to 70 mm thin slab horizontal plane non-homogeneous cooling and edge over-cooling during production of SS400 steel strip Coil with irrational secondary cooling water rate led to precipitation of AIN in austenite and grain boundary britle. The high-quality product rate of SS400 steel strip coil increased from 92.27% to 98.09% by improved technology measure including to control AlS content 0.02%~0.03% in steel, decrease nitrogen pick-up during concasting and secondary cooling water rate at plate slab edge.