ELECTROMAGNETIC STEEL SHEET HAVING INSULATING COATING

Title:

ELECTROMAGNETIC STEEL SHEET HAVING INSULATING COATING

Document Type and Number:

WIPO Patent Application WO/2013/031200

Kind Code:

A1

Abstract:

Provided is an electromagnetic steel sheet having an insulating coating, which has excellent punchability, excellent coating adhesiveness, and excellent coating characteristics after annealing, even without including a chrome compound in the insulating coating.　This electromagnetic steel sheet having an insulating coating is characterized by having an insulated coating having a surface treatment agent coated and dried on at least one surface of the electromagnetic steel sheet, said surface treatment agent including: at a mass ratio (A/B) of less than 0.05-1.0, a trialkoxysilane and/or a dialkoxysilane (A) comprising only at least one type of non-reactive substituent group selected from hydrogen, an alkyl group, and a phenyl group; and a silane coupling agent (B).

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Inventors:

FUJIBAYASHI NOBUE (JP)
SASHI KAZUMICHI (JP)
OKUMURA YUSUKE (JP)
OSHIMA YASUHIDE (JP)
KUBOTA TAKAHIRO (JP)
NAGOSHI MASAYASU (JP)

Application Number:

PCT/JP2012/005423

Publication Date:

March 07, 2013

Filing Date:

August 29, 2012

Export Citation:

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Assignee:

JFE STEEL CORP (JP)
FUJIBAYASHI NOBUE (JP)
SASHI KAZUMICHI (JP)
OKUMURA YUSUKE (JP)
OSHIMA YASUHIDE (JP)
KUBOTA TAKAHIRO (JP)
NAGOSHI MASAYASU (JP)

International Classes:

C23C22/00; B32B15/04; H01F1/18

Foreign References:

JPH09323066A	1997-12-16
JPH04249588A	1992-09-04
JP2003253462A	2003-09-10
JPH0238582A	1990-02-07
JP2010255105A	2010-11-11

Other References: