20号钢连铸坯内部裂纹缺陷的成因及控制

Reasons and control on internal crack of 20~# steel cast billet

阐述唐山贝钢厂用小方坯连铸生产20号钢出现铸坯内部裂纹的成因及改进控制措施。

This paper describes the reasons on internal crack occurred in the production of 20~# steel billet at Tangshan Central Bainitic Steel Works and the improving measures are put forward.