Title:
NON-ORIENTED ELECTROMAGNETIC STEEL SHEET, IRON CORE, METHOD FOR PRODUCING IRON CORE, MOTOR, AND METHOD FOR PRODUCING MOTOR
Document Type and Number:
WIPO Patent Application WO/2024/070807
Kind Code:
A1
Abstract:
This non-oriented electromagnetic steel sheet comprises a base steel sheet and an insulating coating film, in which the base steel sheet has a specified chemical composition, the base steel sheet has a thickness of 0.10 mm to 0.35 mm inclusive, and the average crystal grain diameter is 10 μm or less in a surface region lying between the surface of the base steel sheet and a depth of 1/20 the thickness of the base steel sheet when a cross-section of the base steel sheet which is cut in a direction parallel to the thickness direction is observed.
Inventors:
WAKISAKA TAKEAKI (JP)
NATORI YOSHIAKI (JP)
NATORI YOSHIAKI (JP)
Application Number:
PCT/JP2023/033897
Publication Date:
April 04, 2024
Filing Date:
September 19, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/60; H01F1/147; H01F41/02; C21D8/12; C22C21/00; C22C21/02
Foreign References:
| JP2019178372A | 2019-10-17 | |||
| JP2005113252A | 2005-04-28 | |||
| JP2022502572A | 2022-01-11 | |||
| JP2019199643A | 2019-11-21 | |||
| JP2019012777A | 2019-01-24 | |||
| CN113512635A | 2021-10-19 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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