Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/204266
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 base steel sheet has an internal oxide SiO2 in the range of from the interface between itself and the insulating coating film to 2.0 μm therefrom in the sheet thickness direction.
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/JP2023/015726
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; C22C38/60; C23C22/00; H01F1/147
Domestic Patent References:
| WO2019013350A1 | 2019-01-17 |
Foreign References:
| JPS60131976A | 1985-07-13 | |||
| JPH06184762A | 1994-07-05 | |||
| JP2000038615A | 2000-02-08 | |||
| CN112646966A | 2021-04-13 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF: