常规板坯结晶器铜板下口磨损问题的分析和解决

Analysis and measures to wear problem on copper lower side of slab CCM mould

中国某钢厂板坯结晶器铜板下口磨损严重,宽、窄面铜板过钢量仅不到3万t,下口镀层完全磨损,铜基已经裸露。经过分析铜板磨损情况和结晶器内部结构,采取了提高铜板工作面镀层强度和厚度,如采用Ni-Co等耐磨合金材料;优化铜板与足辊的对弧形式、足辊内部的对弧形式;优化窄面铜板结构等措施可以有效改善结晶器铜板下口磨损严重的问题,提高板坯连铸机生产效率和企业经济效益。

The wear situation on copper plate lower side was heavy serious in one domestic CCM mould. After the amount of casting steel was only 30,000 ton through wide and narrow copper plates, the copper material had emerged because of the coating on copper plate completely wearing out. After analysis on wear situation and mould structure, some measures can be adopted to improve the wearing problem obviously, for example, to increase the strength of coat- ing material, such as using Ni - Co high-resistant coating material and optimize the alignment between copper plate and rollers and aligning in rollers assembly, optimize the structure of narrow copper plates, which will promote the CCM productivity and enterprise economic benefit.