Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET, INSULATING COATING FORMATION METHOD FOR GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET, AND PRODUCTION METHOD FOR GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2020/149356
Kind Code:
A1
Abstract:
This grain-oriented electromagnetic steel sheet has a base steel sheet, an oxide layer, and a tension-imparting insulating coating. When the oxide layer is analyzed by Fourier transform infrared spectroscopy, the absorption A650 at 650 cm-1 and the absorption A1250 at 1,250 cm-1 satisfy 0.2≤A650/A1250≤5.0. The magnetic flux density B8 of the grain-oriented electromagnetic steel sheet in the rolling direction is at least 1.90 T.
Inventors:
TANAKA ICHIRO (JP)
KATAOKA TAKASHI (JP)
TAKEDA KAZUTOSHI (JP)
SUENAGA TOMOYA (JP)
KUNITA YUKI (JP)
KATAOKA TAKASHI (JP)
TAKEDA KAZUTOSHI (JP)
SUENAGA TOMOYA (JP)
KUNITA YUKI (JP)
Application Number:
PCT/JP2020/001238
Publication Date:
July 23, 2020
Filing Date:
January 16, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C21D9/46; C22C38/00; C22C38/60; C23C22/00; C23C22/07; C23C28/04; H01F1/147
Foreign References:
| JPH08191010A | 1996-07-23 | |||
| JPS6230302A | 1987-02-09 | |||
| JPH11246981A | 1999-09-14 | |||
| JP2003313644A | 2003-11-06 | |||
| KR20150074860A | 2015-07-02 | |||
| JP2019005237A | 2019-01-17 | |||
| JPH05311453A | 1993-11-22 | |||
| JP2002249880A | 2002-09-06 | |||
| JP2003313644A | 2003-11-06 | |||
| JP2001303215A | 2001-10-31 |
Other References:
See also references of EP 3913097A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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