Title:
NON-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2024/089828
Kind Code:
A1
Abstract:
Provided is a non-oriented electromagnetic steel sheet having favorable fatigue characteristics that are suitable for rotor cores, and having excellent magnetic characteristics that are suitable for stator cores. This non-oriented electromagnetic steel sheet has a component composition comprising, in mass%, 0.01% or less of C, 2.0% to less than 4.5% of Si, 0.05-5.00% inclusive of Mn, 0.1% or less of P, 0.01% or less of S, 3.0% or less of Al, 0.005% or less of N, and less than 4.5% for Si + Al, with the remainder being Fe and unavoidable impurities. With regards to the crystal grains in the steel sheet, the average crystal grain diameter X1 is 60-200 µm inclusive, the standard deviation S1 of the crystal grain diameter distribution satisfies S1/X1 < 0.75, and the kurtosis K1 of the crystal grain diameter distribution is 2.00 or below.
Inventors:
TANAKA TAKAAKI (JP)
OKUBO TOMOYUKI (JP)
ZAIZEN YOSHIAKI (JP)
MIYAMOTO YUKINO (JP)
OKUBO TOMOYUKI (JP)
ZAIZEN YOSHIAKI (JP)
MIYAMOTO YUKINO (JP)
Application Number:
PCT/JP2022/040034
Publication Date:
May 02, 2024
Filing Date:
October 26, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/12; C22C38/00; C22C38/06; C22C38/60
Foreign References:
| JP2019019355A | 2019-02-07 | |||
| JP2002180213A | 2002-06-26 | |||
| JP2018178198A | 2018-11-15 | |||
| US20140373340A1 | 2014-12-25 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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