连铸板坯表面纵裂原因分析及对策  

Causes of slab surface longitudinal crack and preventive measure

作　　者：王克玉[1] 董光欣[1] 王冰民[1] 陈波[1] 

机构地区：[1]安阳钢铁集团公司

出　　处：《连铸》2006年第1期17-19,共3页Continuous Casting

摘　　要：以安钢现场生产数据为基础,研究各种工艺参数对板坯表面纵裂纹的影响,并从生产实践的角度提出了应对措施,如浸入式水口插入深度、钢水成分、结晶器保护渣、结晶器传热、二冷强度、拉速、钢水过热度等,并介绍了安钢减少表面纵裂废品的措施和方法。In this paper, the influence of various operating factors on the surface longitudinal cracks of slab is discussed basing on actual productive data, such as depth of the SEN, chemical composition,mold powder, heat transfer in mold, secondary cooling intensity , casting speed and superheat of molten steel in tundish. The way to eliminate the slab surface longitudinal crack is also introduced.

关 键 词：表面纵裂纹 连铸板坯 原因分析 结晶器保护渣 钢水过热度 现场生产 工艺参数 生产实践 插入深度 

分 类 号：TF777[冶金工程—钢铁冶金] TF777.1