Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/204267
Kind Code:
A1
Abstract:
This grain-oriented electromagnetic steel sheet comprises a base steel sheet and an insulating coating film disposed directly on the base steel sheet. When this grain-oriented electromagnetic steel sheet is cut along a direction parallel with the sheet thickness direction and perpendicular to the sheet width direction and the cut surface is examined, the average determined Fe content Ibase of an inner-layer region of the base steel sheet and the average determined Fe content Icoating of an inner-layer region of the insulating coating film satisfy 0.010≤Icoating/Ibase≤0.50.
Inventors:
KATAOKA TAKASHI (JP)
HIRAYAMA TAKAAKI (JP)
KIKUZUKI MAYUKO (JP)
TANIGUCHI SHUNSUKE (JP)
TAKEDA KAZUTOSHI (JP)
HIRAYAMA TAKAAKI (JP)
KIKUZUKI MAYUKO (JP)
TANIGUCHI SHUNSUKE (JP)
TAKEDA KAZUTOSHI (JP)
Application Number:
PCT/JP2023/015731
Publication Date:
October 26, 2023
Filing Date:
April 20, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C21D9/46; C22C38/00; C22C38/04; C22C38/60; C23C22/00; H01F1/147
Foreign References:
| JPH11343579A | 1999-12-14 | |||
| JPS6230302A | 1987-02-09 | |||
| JP2000038615A | 2000-02-08 | |||
| JP2002309380A | 2002-10-23 | |||
| JPH0978253A | 1997-03-25 | |||
| KR20190078229A | 2019-07-04 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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