1900mm板坯连铸黏结现象减少措施实践

Measures to Reduce Sticking Phenomenon in 1900mm Slab Continuous Casting

对1900 mm板坯连铸黏结现象形成的原因进行了分析。结果表明,造成黏结的主要原因是初生坯壳与铜板间的保护渣不能起到良好的润滑和传热作用。通过优化保护渣性能、改变结晶器铜板镀层材质、防止结晶器渗水、选择合适的水口浸入深度和水口底部倾角、选择合适的三路氩气流量、规范钢液过热度控制、恒拉速浇注、规范工操作等措施后,1900 mm板坯连铸机黏结次数由每月20次降至4次。

The causes of sticking phenomenon in 1900 mm slab continuous casting were analyzed.The results show that the main reason of sticking is that the protective slag between the green shell and the copper plate can not play a good lubrication and heat transfer function.Slag by optimizing performance,change the mold copper plate coating material,waterproofing crystallizer,choosing the right at the bottom of the nozzle immersion depth and nozzle angle,choosing appropriate three-way argon flow,standardization of pouring molten steel superheat control,constant speed,standardize the worker operation measures,such as 1900 mm slab continuous caster sticking number by 20 times down to 4 times a month.