Title:
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2024/053608
Kind Code:
A1
Abstract:
Provided is a grain-oriented electromagnetic steel sheet having such a magnetic property that a building factor can be reduced satisfactorily. The grain-oriented electromagnetic steel sheet comprises a matrix steel sheet containing 1.50 to 8.00% by mass of Si, 0.02 to 1.00% by mass of Mn and 0.005 to 0.050% by mass of Co and a base coating film formed on the surface of the matrix steel sheet and containing forsterite as a main ingredient, in which the amount of Ti relative to the total amount of the matrix steel sheet and the base coating film is 0.0050 to 0.0200% by mass, and the formula: 0.30≦R17≦R19 is satisfied in which R17 represents a ratio of iron loss W17/50 to hysteresis loss Wh17, i.e., W17/50/Wh17, when the grain-oriented electromagnetic steel sheet is excited at 1.7 T and R19 represents a ratio of iron loss W19/50 to hysteresis loss Wh19, i.e., W19/50/Wh19, when the grain-oriented electromagnetic steel sheet is excited at 1.9 T.
Inventors:
IMAMURA TAKESHI (JP)
SHINGAKI YUKIHIRO (JP)
SHINGAKI YUKIHIRO (JP)
Application Number:
PCT/JP2023/032247
Publication Date:
March 14, 2024
Filing Date:
September 04, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/10; C22C38/14; H01F1/147; C21D8/12; C22C38/60
Foreign References:
| JPH09291313A | 1997-11-11 | |||
| JP2012092409A | 2012-05-17 | |||
| JP2013136824A | 2013-07-11 | |||
| JP2021123766A | 2021-08-30 | |||
| JP2006274405A | 2006-10-12 | |||
| CN108456829A | 2018-08-28 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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