Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET HAVING NO FORSTERITE FILM AND EXHIBITING EXCELLENT INSULATING FILM ADHESION
Document Type and Number:
WIPO Patent Application WO/2020/149344
Kind Code:
A1
Abstract:
A grain-oriented electromagnetic steel sheet which is provided with: a base steel sheet; an intermediate layer which is formed to be in contact with the base steel sheet, while being mainly composed of silicon oxide; and an insulating film which is formed to be in contact with the intermediate layer, while being mainly composed of a phosphate and colloidal silica. This grain-oriented electromagnetic steel sheet is configured such that: the base steel sheet contains a specific chemical component, while comprising BN that has an average particle diameter of 50-300 nm; a specific requirement is satisfied if the luminous intensity of B is measured by glow discharge optical emission spectrometry; and the ratio of the major axis to the minor axis of the BN is 1.5 or less.

More Like This:
JPH0726156[Title of the Invention] A method for manufacturing a grain-oriented electrical steel sheet having excellent magnetic properties and surface properties.
JPH01123030MANUFACTURE OF GRAIN-ORIENTED MAGNETIC STEEL SHEET
JPS61117219PRODUCTION OF LOW-IRON LOSS GRAIN-ORIENTED ELECTRICAL STEEL SHEET
Inventors:
YASUDA MASATO (JP)
ARITA YOSHIHIRO (JP)
TAKAHASHI MASARU (JP)
USHIGAMI YOSHIYUKI (JP)
NAGANO SHOHJI (JP)
Application Number:
PCT/JP2020/001188
Publication Date:
July 23, 2020
Filing Date:
January 16, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C21D9/46; C22C38/00; C22C38/06; C22C38/60; C23C22/00; H01F1/147
Domestic Patent References:
WO2012096350A12012-07-19
WO2019146694A12019-08-01
Foreign References:
JP2012144777A2012-08-02
JP2012144776A2012-08-02
JP2001026847A2001-01-30
JP2019005395A2019-01-17
JPS4839338A1973-06-09
US3905842A1975-09-16
US3905843A1975-09-16
JPH01230721A1989-09-14
JPH01283324A1989-11-14
JPH10140243A1998-05-26
JPH07278670A1995-10-24
JPH11106827A1999-04-20
JP2002173715A2002-06-21
JPS60131976A1985-07-13
JPH06184762A1994-07-05
JPH07278833A1995-10-24
JP2002348643A2002-12-04
Other References:
See also references of EP 3913086A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: LAYERED BODY AND IMAGE DISPLAY DEVICE

Next Patent: GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME