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Title:
ORIENTED ELECTROMAGNETIC STEEL PLATE AND METHOD FOR AMELIORATING IRON LOSSES THEREIN
Document Type and Number:
WIPO Patent Application WO/2013/099274
Kind Code:
A1
Abstract:
Provided is an oriented electromagnetic steel plate that has been subjected to magnetic-domain refinement via strain introduction and has a highly insulating, highly corrosion-resistant insulating coating. Exposure to a high-energy beam is used to introduce linear strain into said electromagnetic steel plate, said linear strain extending in a direction that intersects the direction in which the steel plate is rolled, and the oriented electromagnetic steel plate is then recoated with an insulating coating. Defects in said insulating coating cover no more than 40% of the surface area of mark regions produced by the high-energy beam, the maximum width of said mark regions in the direction in which the steel plate is rolled is no more than 250 µm, and the insulating coating with which the oriented electromagnetic steel plate is recoated is 0.3 to 2.0 µm thick.

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Inventors:
INOUE HIROTAKA (JP)
TAKAJO SHIGEHIRO (JP)
YAMAGUCHI HIROI (JP)
OKABE SEIJI (JP)
HANAZAWA KAZUHIRO (JP)
Application Number:
PCT/JP2012/008411
Publication Date:
July 04, 2013
Filing Date:
December 27, 2012
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
C22C38/00; C21D8/12; C21D9/46; C22C38/60; C23C22/00; C23C22/74; H01F1/16
Foreign References:
JPS57152423A1982-09-20
JPH04337079A1992-11-25
JPH051387A1993-01-08
JPH03130377A1991-06-04
JP2001303214A2001-10-31
JPS572252B21982-01-14
JPH0672266B21994-09-14
JPS6249322B21987-10-19
JPH0532881B21993-05-18
JP3361709B22003-01-07
JP4091749B22008-05-28
JPS6249322B21987-10-19
Other References:
See also references of EP 2799566A4
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
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Claims:



 
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