Title:
METHOD FOR PRODUCING UNIDIRECTIONAL ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2011/162086
Kind Code:
A1
Abstract:
Disclosed is a method for producing a unidirectional electromagnetic steel sheet, wherein a resist film is formed on a cold-rolled steel sheet when the cold-rolled steel sheet is provided with a groove by etching. The resist film is provided with a steel sheet exposing portion, from which a part of the steel sheet is exposed, and the steel sheet exposing portion has a first region that extends in the sheet width direction and a plurality of second regions that extend from the first region. The resist film is formed so that the widths of the first and second regions are 20-100 μm and the distance from an edge of one second region to an edge of another second region adjacent thereto is 60-570 μm.
Inventors:
IWATA KEIJI (JP)
KIKUCHI YASUHIRO (JP)
KIKUCHI YASUHIRO (JP)
Application Number:
PCT/JP2011/062843
Publication Date:
December 29, 2011
Filing Date:
June 03, 2011
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
IWATA KEIJI (JP)
KIKUCHI YASUHIRO (JP)
IWATA KEIJI (JP)
KIKUCHI YASUHIRO (JP)
International Classes:
C23F1/02; C21D8/12; C25F3/14
Domestic Patent References:
| WO2010147009A1 | 2010-12-23 | |||
| WO2010147009A1 | 2010-12-23 |
Foreign References:
| JPS56105424A | 1981-08-21 | |||
| JPS50137819A | 1975-11-01 | |||
| JP2007169762A | 2007-07-05 | |||
| JPS61117218A | 1986-06-04 | |||
| JPS61253380A | 1986-11-11 | |||
| JPS6342332A | 1988-02-23 | |||
| JPH0488121A | 1992-03-23 | |||
| JP2001316896A | 2001-11-16 |
Other References:
See also references of EP 2573193A4
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (JP)
Takayoshi Kokubu (JP)
Takayoshi Kokubu (JP)
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Claims: