7号方坯连铸机角裂漏钢分析与对策

Analysis and Countermeasures for Bleak-out Caused by Corner Crack of No.7 Billet Caster

分析认为柳钢7号方坯连铸机角裂漏钢原因:结晶水套设计不合理、结晶器液面波动大、中包下水口对中不好等,介绍了实施的优化结晶器水套结构、稳定结晶器液面、严格下水口对中等措施,使角裂漏钢次数下降到0.55次/月。

The reasons for break-out caused by corner crack of No.7 Billet Caster were analyzed, such as unreasonable mould water jacket design, big fluctuation of mould level and poor centering of collector nozzle of tundish and so on. The countermeasures such as to implement the optimum mould water jacket structure, stabilize the mould level and strengthen the collector nozzle centering were introduced to reduce the bleak-out caused by corner crack to 0.55 time/month.