Patent ID: 7140417

Claim:
A method for producing a non-oriented electrical steel comprising the steps of: a) preparing a non-oriented electrical steel melt having a composition in weight % comprising: up to about 6.5% silicon, up to about 5% chromium, up to about 0.05% carbon, up to about 3% aluminum, up to about 3% manganese, and the balance being substantially iron and residuals; b) casting a steel strip by rapid solidification of the steel melt into a thin strip having a thickness less than about 10 mm and developing an as-cast grain structure; c) rapidly cooling the thin strip from a temperature of about 2500° F. (about 1370° C.) to below about 1700° F. (about 925° C.) at a rate greater than about 20° F./second (about 10° C./second); and d) rolling the thin strip to reduce the strip thickness and provide an as-cast grain structure wherein recrystallization is minimized.