Title:
GRAIN-ORIENTED ELECTRICAL STEEL SHEET, GRAIN-ORIENTED ELECTRICAL STEEL SHEET MANUFACTURING DEVICE, AND GRAIN-ORIENTED ELECTRICAL STEEL SHEET MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/140363
Kind Code:
A1
Abstract:
This grain-oriented electrical steel sheet has, along a steel sheet surface, a rolling direction and a sheet width direction orthogonal to the rolling direction, wherein: the rolling direction coincides with a direction of easy magnetization of the grain-oriented electrical steel sheet; the steel sheet surface has point-series grooves that extend in a point-series direction intersecting the sheet width direction; the point-series grooves are configured by arranging, side by side in a straight line, a plurality of substantially elliptical point-shaped grooves or a plurality of point group grooves obtained by forming a plurality of holes continuously in a straight line; and a long axis of the point-shaped grooves or the point group grooves intersects the point-series direction.
Inventors:
SAKAI TATSUHIKO (JP)
HAMAMURA HIDEYUKI (JP)
HAMAMURA HIDEYUKI (JP)
Application Number:
PCT/JP2023/001757
Publication Date:
July 27, 2023
Filing Date:
January 20, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B23K26/364; B23K26/073; B23K26/082; C21D8/12
Domestic Patent References:
| WO2012164702A1 | 2012-12-06 |
Foreign References:
| JP2017125250A | 2017-07-20 | |||
| JP2019137883A | 2019-08-22 | |||
| JP2006233299A | 2006-09-07 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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