Through taking some countermeasures such as the shimming adjustment of the wide face taper,the new design of narrow face foot roller and the change of the coating st...

• 制定了垫片调整大面锥度、增加窄边足辊和优化镀层结构等措施,结晶器平均寿命从144炉/次提高到306炉/次,最高使用寿命为517炉。