METHOD FOR PRODUCING ELECTROTECHNICAL STEEL SHEET WITH ORIENTED GRAIN STRUCTURE AND ELECTROTECHNICAL STEEL SHEET WITH ORIENTED GRAIN STRUCTURE Russian patent published in 2021 - IPC C21D8/12 C21D9/46 C22C38/00 C22C38/20 C22C38/60 C23C22/07 H01F1/147 

FIELD: working of metal.

SUBSTANCE: group of inventions relates to a method for producing an electrotechnical steel sheet with an oriented grain structure and to an electrotechnical steel sheet with an oriented grain structure. The method includes the following stages: heating a slab with a predetermined component composition with a residue of Fe and impurities, and hot rolling; etching the hot-rolled steel sheet, or annealing the hot-rolled sheet and etching the hot-rolled annealed sheet; cold rolling the etched sheet; annealing for primary recrystallisation; applying a separating annealing agent including MgO; performing final annealing; applying an insulating coating to the resulting annealed sheet; and performing levelling annealing.

EFFECT: provided is an electrotechnical steel sheet with an oriented grain structure exhibiting reduced steel losses.

4 cl, 1 dwg, 10 tbl