HOT-ROLLED STEEL SHEET FOR TEXTURED ELECTRICAL STEEL SHEET AND METHOD OF MANUFACTURING THEREOF AND METHOD FOR MANUFACTURING OF TEXTURED ELECTRICAL STEEL SHEET Russian patent published in 2020 - IPC C22C38/60 C21D8/12 H01F1/16 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, particularly, to production of hot-rolled steel sheet used for production of textured electrical steel sheet. Hot-rolled steel sheet has the following chemical composition, containing, wt. %: C: 0.002 % or more and 0.080 % or less, Si: 2.00 % or more and 8.00 % or less, Mn: 0.02 % or more and 0.50 % or less, acid-soluble Al: 0.003 % or more and less than 0.010 %, at least one element of S or Se: 0.001 % or more and 0.010 % or less in total, N: less than 0.006 %, and Fe and unavoidable impurities. Areas from outer surface layer and bottom surface layer to depth of 1/4 of sheet thickness have degree of recrystallization of 90 % or less.

EFFECT: use of hot-rolled and annealed sheet allows to obtain sheets of textured electrical steel, having high stable magnetic properties, with reduction of costs and increased efficiency.

11 cl, 1 dwg, 2 tbl, 1 ex