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Title:
ORIENTED MAGNETIC STEEL SHEET AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2017095735
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an oriented magnetic steel sheet that can effectively realize low noise property and has excellent magneto-striction property.SOLUTION: An oriented magnetic steel sheet has an average value DLmax of a length in a rolling direction of crystal grains of 12 mm or longer, a coating tension of 1 MPa or smaller, a board thickness of 0.35 mm or smaller, and when a length in the rolling direction of the crystal grain is equally divided into four regions, a grain boundary neighboring region within a distance of 2 mm toward the inside of the crystal grain from the grain boundary present in two outside regions thereof has a submerging angle of a grain orientation with an absolute value as β satisfies (an area of the grain boundary neighboring region having β of 4.0° or smaller)/(all area of the grain boundary neighboring region)≥0.50. Further, a manufacturing method of the oriented magnetic steel sheet in which a sleeve diameter when winding a coil for finishing hardening is set to 350 mm or larger, a winding speed is set to 60 mpm or smaller, and a winding tensile strength is set to 5 MPa or larger is provided.EFFECT: The oriented magnetic steel sheet can reduce the magnetostriction, for example, when used as a raw material of an electric component of for example, a transformer, the noise from the member can be reduced.SELECTED DRAWING: Figure 2

Inventors:
MOGI TAKASHI
TAKAHASHI FUMIAKI
MIZOGAMI MASAHITO
Application Number:
JP2015225445A
Publication Date:
June 01, 2017
Filing Date:
November 18, 2015
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C22C38/00; C21D8/12; H01F1/16
Domestic Patent References:
JP2003034820A2003-02-07
JP2002220644A2002-08-09
JP2006144058A2006-06-08
JP2013133503A2013-07-08
JP2012087374A2012-05-10
JP2010236004A2010-10-21
JPH05263135A1993-10-12
Foreign References:
US20130306202A12013-11-21
Attorney, Agent or Firm:
Koji Hagiwara
Tetsuo Kanamoto
Miaki Kametani