Abstract: Non-oriented silicon steel, as a key material for driving motors and motor cores, has a thin thickness, high Si and Al content, high brittleness, and severe edge cracking during cold rolling production, which seriously affects the yield rate. Based on the composition and process characteristics of nonoriented silicon steel, this article analyzes and summarizes the research on the causes of edge cracking in cold rolling of nonoriented silicon steel at home and abroad, and proposes directions for further research and exploration in the future.

Key words: non-oriented silicon steel, cold rolling, broken belt, edge crack