FIELD: technological processes.
SUBSTANCE: invention relates to a grain-oriented electrical steel sheet. Groove is formed, passing in the direction intersecting the direction of rolling, where the direction of the depth of the groove corresponds to the direction of the sheet thickness. In the case when the surface of the steel sheet, when viewed in the direction of its thickness, is provided with a group of grooves, which consists of a set of grooves located in the direction of the width of the sheet, the grooves constituting the group of grooves, arranged in such a way that adjacent grooves overlap each other on a projection plane perpendicular to the rolling direction, and many groups of grooves are located with an interval in the rolling direction.
EFFECT: improving corrosion resistance and reducing iron loss on the surface of the steel sheet.
5 cl, 22 dwg, 2 tbl
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