Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2018/150791
Kind Code:
A1
Abstract:
The present invention is able to provide a grain-oriented electromagnetic steel sheet in which the surface of the steel sheet has magnetic domains that are subdivided via multiple linear grooves, wherein reduction of magnetic flux density is limited and core loss is further improved by providing the bottom surface of the linear grooves with multiple recesses in a line with a specified gap p therebetween in the direction that the groove extends, with said recesses having a specified depth d.
Inventors:
TERASHIMA TAKASHI (JP)
UMADA TAKUMI (JP)
WATANABE MAKOTO (JP)
TAKAMIYA TOSHITO (JP)
UMADA TAKUMI (JP)
WATANABE MAKOTO (JP)
TAKAMIYA TOSHITO (JP)
Application Number:
PCT/JP2018/001270
Publication Date:
August 23, 2018
Filing Date:
January 17, 2018
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/12; C22C38/00; H01F1/147; C22C38/60
Domestic Patent References:
| WO1997024466A1 | 1997-07-10 | |||
| WO2010147009A1 | 2010-12-23 |
Foreign References:
| JP2005059014A | 2005-03-10 | |||
| JP2012102395A | 2012-05-31 | |||
| JPS5518566A | 1980-02-08 | |||
| JPS6267114A | 1987-03-26 | |||
| JPS6342332A | 1988-02-23 | |||
| JPH07220913A | 1995-08-18 | |||
| JP4719319B2 | 2011-07-06 | |||
| JP5771620B2 | 2015-09-02 |
Other References:
See also references of EP 3584330A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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