Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/068236
Kind Code:
A1
Abstract:
The present invention provides a grain-oriented electromagnetic steel sheet which is free from defects such as cracking and chipping due to twinning deformation even if applied to a winding core or an iron core of a small power generator or the like, thereby being subjected to intense processing, and which is also free from deterioration in the magnetic characteristics. This grain-oriented electromagnetic steel sheet has a component composition that contains 2.8 mass% to 3.5 mass% of Si and 0.01 mass% to 1.0 mass% of Mn, with the balance being made up of Fe and unavoidable impurities, while having a base coating film that is mainly composed of forsterite and contains Ti, and a top coating film that is formed on the base coating film. With respect to this grain-oriented electromagnetic steel sheet, the base coating film has an oxygen weight per square meter of 3.8 g/m2 or more and a Ti weight per square meter of 0.06 g/m2 or less.
Inventors:
WATANABE MAKOTO (JP)
YAMADA TAKUYA (JP)
TERASHIMA TAKASHI (JP)
YAMADA TAKUYA (JP)
TERASHIMA TAKASHI (JP)
Application Number:
PCT/JP2022/038635
Publication Date:
April 27, 2023
Filing Date:
October 17, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/12; C22C38/00; C22C38/04; C22C38/60; H01F1/147
Domestic Patent References:
| WO2008047999A1 | 2008-04-24 |
Foreign References:
| JPS61238939A | 1986-10-24 | |||
| JPH1060533A | 1998-03-03 | |||
| JP2018066062A | 2018-04-26 | |||
| JP2016145419A | 2016-08-12 | |||
| JPH09184017A | 1997-07-15 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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