Title:
METHOD OF PRODUCING ORIENTED MAGNETIC STEEL SHEET AND PRODUCTION EQUIPMENT LINE
Document Type and Number:
WIPO Patent Application WO/2017/159507
Kind Code:
A1
Abstract:
In the present invention, iron loss unevenness among domain-refined materials due to electron beam irradiation is reduced and favorable iron loss is obtained in a stable manner. In this method for producing an oriented magnetic steel sheet, when performing a domain refinement treatment in a reduced-pressure area by irradiating with an electron beam on a surface of an oriented magnetic steel sheet that has undergone final processing and that has been annealed, the oriented magnetic steel sheet wound in a coil shape is removed, then heated to 50°C or more, and the temperature of the oriented magnetic steel sheet at the time of entry into the reduced-pressure area is set to less than 50°C.
Inventors:
OMURA TAKESHI (JP)
INOUE HIROTAKA (JP)
TAKAJO SHIGEHIRO (JP)
OKABE SEIJI (JP)
INOUE HIROTAKA (JP)
TAKAJO SHIGEHIRO (JP)
OKABE SEIJI (JP)
Application Number:
PCT/JP2017/009313
Publication Date:
September 21, 2017
Filing Date:
March 08, 2017
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/12; H01F1/147; C22C38/00; C22C38/60
Foreign References:
| JP2014019901A | 2014-02-03 | |||
| JPH03287725A | 1991-12-18 | |||
| JP2012052230A | 2012-03-15 | |||
| JP2012177149A | 2012-09-13 |
Other References:
See also references of EP 3431616A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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