板坯连铸机引锭杆下沉故障的诊断与分析

Diagnosis and Analysis on Dummy Bar Sink Failure at Slab Caster

某炼钢厂板坯连铸机上使用修复的引锭杆出现下沉,严重影响着生产稳定。通过对引锭杆下沉故障的现场诊断及故障分析,从引锭杆设计、修复质量等方面找到了其下沉故障的影响因素,提出了三条改进措施。改进后引锭杆寿命比原来提高了一倍,每年节约维修费用13.75万元。

The production stability is seriously affected due to the sink problem for the repaired dummy bar at a slab caster of one steel-making plant.The affecting factors for dummy bar sink are figured out from the design,repair quality and other sides of the dummy bar by on-site diagnosis and failure analysis.Three improvement measures are proposed.After modification,the dummy bar lifetime doubles the original and 137,500 RMB maintenance expense is saved annually.