METHOD TO PRODUCE SHEET FROM UNORIENTED ELECTRICAL STEEL Russian patent published in 2014 - IPC C21D8/12 C21D9/46 H01F1/16 C22C38/02 

FIELD: metallurgy.

SUBSTANCE: steel slab contains the following substances, wt %: 0.01-0.1 C, maximum 4 Si, 0.05-3 Mn, maximum 3 Al, maximum 0.005 S, maximum 0.005 N, the rest is Fe and unavoidable impurities. It is subject to hot rolling, cold rolling and final annealing, the latter is performed under the following conditions: average rate of temperature increase in the course of sheet heating amounts to at least 100°C/s, and the curing temperature falls within the temperature range of 750-1100°C.

EFFECT: increased density of a magnetic flux in steel sheet rolling direction.

3 cl, 2 dwg, 1 tbl