连铸板坯偏离角纵裂纹成因分析及控制措施  

Analysis and Measures of Longitudinal Corner Crack in Continuous Casting Slab

作　　者：邵明天[1] 刁承民[1] 高峰[1] 修立策[1] 

机构地区：[1]济南钢铁集团总公司第三炼钢厂,山东济南250101

出　　处：《中国冶金》2007年第9期59-62,共4页China Metallurgy

摘　　要：通过对济钢第三炼钢厂1号连铸机连铸工艺环节的分析,并根据实际生产中所采取的相关措施及取得效果,认为板坯角部纵裂纹主要源于结晶器侧面足辊与样板的间隙、结晶器冷却和锥度、钢水成分和过热度、拉速等。对其采取有效措施后,使板坯的偏离角纵裂纹发生率由2.77%降低到0.09%。According to the analysis of the No 1 CCM process and the measures of production, the main causes of longitudinal corner crack in continuous casting slab in No 3 steelmaking plant of Jinan Iron and Steel Co Ltd are the side foot roller clearance, mould cooling and taper, composition of molten steel, superheat degree and casting speed. The rate of slab with longitudinal corer cracks is decreased from 2. 77% to 0.09% with the effectual measures.

关 键 词：连铸板坯 偏离角纵裂纹 结晶器足辊 锥度 

分 类 号：TF777.1[冶金工程—钢铁冶金]