冷轧薄板表面缺陷成因研究及控制  

Study on the causes and controlling of defects for cold-rolled sheet

作　　者：冀云卿[1] 王新华[1] 邓小旋[1] 杨叠[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《炼钢》2014年第2期22-25,共4页Steelmaking

摘　　要：用Aspex扫描电镜分析了某钢厂在高拉速连铸下生产的冷轧薄板表面缺陷特征及成因。结果表明:高拉速连铸条件下生产的冷轧板缺陷中,簇群状Al2O3、"氩气泡+Al2O3"和结晶器保护渣是引起冷轧板缺陷的主要原因。其中,结晶器保护渣卷渣占主要部分。通过在高拉速连铸中使用FC结晶器,优化了浸入式水口结构,使后续的冷轧板缺陷的发生率从3.0%降至1.5%。The character and cause of surface defect on cold-rolled sheet produced after contin- uous casting with high speed were studied by means of Aspex scanning electron microscope. The results shows that the surface defect is caused by A1203 clusters, At＋ A1203 typed inclu- sions and the entrapped mold powder and the entrapped mold powder is the main part. After using FC mold in continuous casting with high speed and optimization the SEN, a follow-up occurrence rate of surface defect is from 3 % down to 1.5 %.

关 键 词：冷轧板 高拉速连铸 表面缺陷 控制措施 

分 类 号：TF762[冶金工程—钢铁冶金]