Abstract: The causes of non-oriented silicon steel hot rolled edge warping defects are steelmaking protection slag, steelmaking oxide inclusion, casting billet angle crack, hot rolled iron oxide involvement, side guide clamping, etc. According to the causes of different edge warping defects, Al1 protection slag, small chamfering crystallizer and hot rolled side guide clamping without putting were adopted in test measures. The results showed that the incidence of edge warping defects of non-oriented silicon steel has been greatly improved.

Key words: edge defects, slag, oxide inclusions, bloom defects, side guide clamping