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针对板坯投产以来易出现表面纵向裂纹的情况,结合现场实际生产特点,从钢水质量、工艺控制和操作等方面进行分析与改进,铸坯表面纵向裂纹发生率得到了有效控制,板坯表面纵裂发生率由2009年的6.2%降到2010年的3.5%。
In view of the fact that the longitudinal cracks appear on the slab since the slab is put into production, the longitudinal cracks in the slab are effectively controlled by analyzing and improving the molten steel quality, process control and operation according to the actual production characteristics of the slab. The incidence of cleft fell from 6.2% in 2009 to 3.5% in 2010.