Cause summary and case analysis of edge crack defects during the cold rolling process of thin steel sheet
In order to minimize edge crack defects during the cold rolling process of thin steel sheet,the main causes of such defects were analyzed and summarized systematically according to the management method of consistent system for cold rolling products.The result shows that there are three kinds of reasons causing edge crack defects:edge defects on cold rolling substrate,uneven microstructure of cold rolling substrate and improper cold rolling process control.Considering the above different types of edge crack defects in Shasteel,the reasons causing edge crack were determined by OM,SEM and EDS,and corresponding experimental measures,and then improving measures were put forward.Mter adopting those measures,defective rate of edge crack drops from 5％ to 0.5％ for cold rolling thin SPCC sheet metal in Shasteel.
NETL
NSTL
万方数据
维普
