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Title:
NON-ORIENTED ELECTROMAGNETIC STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/210890
Kind Code:
A1
Abstract:
This non-oriented electromagnetic steel sheet contains a predetermined chemical composition and has a tensile strength of at least 580 MPa, wherein: the average crystal grain diameter of ferrite in a recrystallization part is at most 50 μm; and in inclusions contained in the ferrite and having an equivalent circle diameter of at least 1 μm and a S content of at least 5 mass%, the number of inclusions having a Mg content of greater than 5 mass% and a Mn content of at least 5 mass% is at least 5 times the number of inclusions having a Mg content of at most 5 mass% and a Mn content of at least 5 mass%.

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Inventors:
NATORI YOSHIAKI (JP)
YASHIKI HIROYOSHI (JP)
FUKUCHI MINAKO (JP)
TAKEDA KAZUTOSHI (JP)
Application Number:
PCT/JP2022/016029
Publication Date:
October 06, 2022
Filing Date:
March 30, 2022
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C21D9/46; C22C38/00; C22C38/14; C22C38/58; H01F1/147
Domestic Patent References:
WO2020153387A12020-07-30
WO2020111783A22020-06-04
Foreign References:
JP2020139198A2020-09-03
JP2019178373A2019-10-17
JPH03219020A1991-09-26
JPH02263920A1990-10-26
JP2021061872A2021-04-22
JP2005330527A2005-12-02
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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