Title:
GRAIN-ORIENTED MAGNETIC STEEL PLATE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/190331
Kind Code:
A1
Abstract:
In a surface of this grain-oriented magnetic steel plate, a ratio (a groove presence ratio), of a total length of magnetic-domain control processing lines aligned in a rolling direction and forming an angle of 0° to 45° with respect to a rolling perpendicular direction, occupied by a section (a groove formation line) where a groove having a depth of 5 μm to 50 μm and a width of 10 μm to 300 μm is present, is equal to or greater than 50% in a first region, which is a region where a β angle is equal to or less than 1°, the β angle being a deviation angle from a crystal grain Goss orientation around the axis of the rolling perpendicular direction. The groove presence ratio is less than 50% in a second region, which is a region where the β angle is greater than 2°.
Inventors:
KAWAMURA YUSUKE (JP)
Application Number:
PCT/JP2023/012183
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 | |||
| 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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