GRAIN-ORIENTED ELECTRICAL STEEL SHEET
    317.
    发明公开

    公开(公告)号:US20230304123A1

    公开(公告)日:2023-09-28

    申请号:US18041798

    申请日:2021-08-18

    CPC classification number: C21D10/005 C21D2201/05 C21D2221/00

    Abstract: To provide a grain-oriented electrical steel sheet that can achieve both sufficiently low transformer core loss and sufficiently low noise. Disclosed is a grain-oriented electrical steel sheet having a tension coating on a surface thereof and subjected to magnetic domain refining treatment by generating linear closure domains extending in a direction within 30° of a transverse direction, in which an average interval L between adjacent closure domains is 15 mm or less, a depth ratio rd of a depth of the closure domains to a sheet thickness, calculated by a predetermined formula, is 35% or more, and a volume fraction rv of the closure domains, calculated by a predetermined formula, is 0.30% or more and 3.0% or less, and an area ratio rs of the closure domains, calculated by a predetermined formula, is 0.50% or more and 4.0% or less.

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