唐钢冲压用热轧钢带夹杂物控制技术的应用与实践

THE APPLICATION AND PRACTICE OF CONTROLLING THE INCLUSIONS IN THE HOT ROLLED STEEL STRIP FOR STAMPING IN TANGSHAN STEEL

结合唐铜冲压用热轧板的生产实际，从铁水预处理、转炉、LF精炼到连铸分别阐述了各工序夹杂物的控制方法。用扫描电镜对冲压开裂的零件夹杂物进行分析，结合生产记录找到本次产生夹杂物的原因。减少钢包和中间包下渣、结晶器卷渣也是降低铜板中夹杂物的关键操作。

The paper, combing with the factual practices of stamping with hot-rolled plates in Hebei Iron and Steel Group Tang Branch, illustrates the methods of controlling inclusions in different processes from the pretreatment of hot metal, converter, LF refining to continuous casting. Scanning electron microscopes, as well as production records were used to analyze the inclusions in the parts cracking from stamping, to discover the reasons for producing these inclusions. The key solutions may include reducing the amount of the roughing slag in steel ladle and the tundish and reducing the amount of the slag in the crystallizer.