Abstract
The influence of the chemical composition of steel (its Al, Si, and Sb content) on its texture and magnetic properties is studied, with a view to developing a production technology for high-alloy isotropic electrical steel (containing up to 3% Si) with superlow magnetic losses (P1.5/50 ≤ 2.70 W/kg for strip of rated thickness 0.50 mm and P1.5/50 ≤ 2.50 W/kg for rated thickness 0.35 mm) and a high degree of flatness (nonplanarity class 1 according to State Standard GOST 21427.2, with discrepancies no greater than 2 mm). Alloying with aluminum and antimony improves the texture of the final steel and hence greatly reduces the magnetic losses. The influence of cold rolling and recrystallization annealing of the flatness of the final strip is discussed.
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