Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL PLATE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/255552
Kind Code:
A1
Abstract:
Provided are a grain-oriented electromagnetic steel plate combining low iron loss and low magnetostriction and an advantageous production method therefor. This grain-oriented electromagnetic steel plate comprises a linear distortion section extending in a direction intersecting with a rolling direction. The linear distortion section has a stress distribution wherein compressive stress regions and tensile stress regions are aligned while alternating with one another in the length direction of the linear distortion section. In addition, the linear distortion section is formed by subjecting the steel plate to oscillations in the plate thickness direction when an electron beam is moved and stopped repeatedly in a direction intersecting with the steel plate rolling direction to irradiate the steel plate surface.
Inventors:
ICHIHARA YOSHIHISA (JP)
OMURA TAKESHI (JP)
SENDA KUNIHIRO (JP)
OMURA TAKESHI (JP)
SENDA KUNIHIRO (JP)
Application Number:
PCT/JP2020/016843
Publication Date:
December 24, 2020
Filing Date:
April 17, 2020
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/12; H01F1/147
Domestic Patent References:
| WO2013118512A1 | 2013-08-15 | |||
| WO2012164702A1 | 2012-12-06 |
Foreign References:
| JP2012036443A | 2012-02-23 | |||
| JP2013159833A | 2013-08-19 | |||
| JPS61269973A | 1986-11-29 | |||
| JPS51116138A | 1976-10-13 | |||
| JPH0622179B2 | 1994-03-23 | |||
| JPH07192891A | 1995-07-28 | |||
| JP2017128765A | 2017-07-27 | |||
| JP2012036445A | 2012-02-23 |
Other References:
See also references of EP 3985134A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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