酸连轧机高牌号无取向硅钢焊接工艺优化

Welding technology optimization of high grade non-oriented silicon steel in acid continuous rolling units

主要针对酸连轧机组高牌号无取向硅钢焊接工艺进行研究分析,明确了影响高牌号无取向硅钢焊缝质量的关键主控因素:焊接速度、拼缝间隙、退火电流、离焦量等,同时研究了不同硅含量的硅钢品种在不同退火电流下的实际焊缝微观形貌,发现不同硅钢品种的自身性能对焊缝通过性有较大影响.针对研究分析过程中发现的问题提出了改进意见,并提高了实际生产的焊缝通过率.

The welding technology of high grade non-oriented silicon steel in acid continuous rolling units was researched in this paper,and the key and main factors of affecting the weld joint quality of high grade non-oriented silicon steel,such as the welding speed,the weld gap,the annealing current,the defocus amount,were defined.Meanwhile,by analyzing the actual microstructures of weld joints of different silicon steels varied with different silicon content under different annealing current,it was found that the self properties of different silicon steels make great effect on the passing compacity of weld joints.So then the improvment suggestions were put forward,which were proved that passing compacity of weld joints has been really improved in actual production.