板坯中间裂纹的成因分析及预防措施

Analysis on Cracks at Mid-slab and Prevention Measures

通过对天铁热轧1650mm 1#板坯连铸机工艺流程的生产数据跟踪,针对铸坯内部中间裂纹的形成原因、机理、影响因素等进行分析,从拉速控制、杂质元素控制等几方面探讨了防止铸坯中间裂纹产生的有效措施。

By tracking production data for slab caster 1 of 1,650 mm hot rolling mill of Tiantie Metallurgical Group Co., the author analyses the causes, mechanism and affecting factors of the internal mid-slab cracks, and discusses the effective measures to prevent mid-slab cracks in respects of controlling casting speed, inclusion, etc.