中薄板坯连铸SPHC钢偏离角纵裂纹成因分析及控制  

Study on longitudinal corner crack of SPHC in thin and medium thickness CCM

作　　者：杨晓江[1,2] 

机构地区：[1]河北钢铁集团唐山钢铁公司第一钢轧厂,河北唐山063016 [2]钢铁研究总院连铸技术国家工程研究中心,北京100081

出　　处：《钢铁研究》2010年第2期11-14,共4页Research on Iron and Steel

摘　　要：针对唐钢中薄板坯连铸机生产SPHC钢过程中出现偏离角纵裂纹的情况进行了分析,提出了控制铜板表面质量、控制结晶器变锥度、优化提速制度、优化结晶器冷却强度和改善结晶器振动偏摆等措施,有效地控制了偏离角纵裂纹和裂纹引起的漏钢。The reason to form longitudinal corner crack of SPHC slab in thin and medium thickness CCM of Tangshan Steel is studied in this paper.Some measures,such as controlling of copper plate surface quality of mould,controlling of change of conical degree of mould,optimizing of speed-rising regulations,optimizing of cooling intensity of mould,as well as improving of oscillation of mould are put forward.As a result,the longitudinal corner crack of slab and molten steel runout caused by serious crack have been effectivelly controlled.

关 键 词：中薄板坯连铸 偏离角纵裂纹 SPHC 

分 类 号：TF777.7[冶金工程—钢铁冶金]