Title:
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/190328
Kind Code:
A1
Abstract:
In a grain-oriented electrical steel sheet according to one aspect of the present invention, on the surface of the grain-oriented electrical steel sheet, the tensile stress presence ratio is 50% or more in a first region that is a region where the β angle is 1° or less, the tensile stress presence ratio being the ratio, among the total extension of magnetic domain control treatment lines that form an angle of 0° to 45° with respect to the transverse direction and are arranged side by side in the rolling direction, of portions which are present non-monoperiodically and in which tensile stress is present in the sheet thickness direction and the β angle being the angle of deviation from the Goss orientation of crystal grains around the transverse direction axis, the tensile stress presence ratio is less than 50% in a second region that is a region where the β angle is more than 2°, and the maximum value of the tensile stress is 40 MPa or more.
Inventors:
KAWAMURA YUSUKE (JP)
Application Number:
PCT/JP2023/012179
Publication Date:
October 05, 2023
Filing Date:
March 27, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C22C38/00; H01F1/147
Foreign References:
| JPH11293340A | 1999-10-26 | |||
| JP2008127632A | 2008-06-05 | |||
| JP2012057218A | 2012-03-22 | |||
| JP2020169373A | 2020-10-15 | |||
| JPS55119125A | 1980-09-12 | |||
| CN106282512A | 2017-01-04 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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