Title:
NON-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/176866
Kind Code:
A1
Abstract:
A non-oriented electromagnetic steel sheet in which: a base material has a chemical composition of, by mass, 0.0050% or less of C, over 3.70% and up to 4.60% of Si, over 0.20% and up to 0.50% of Mn, 0.23-0.75% of Al, 0.030% or less of P, 0.0018% or less of S, 0.0040% or less of N, 0.005-0.040% of Sn, and 0-0.040% of Sb, the balance being Fe and impurities; the relationship [4.2≤Si+Al+0.5×Mn≤4.9] is satisfied; the N content [N]s from the surface of the base material to a position at 20 μm in the depth direction is 0.0060% or less; the average crystal grain size of the base material is 50-120 μm; the saturation magnetic flux density is 1.945 T or greater; the tensile strength is 600 MPa or greater; and the plate thickness is 0.10-0.30 mm.
Inventors:
YASHIKI HIROYOSHI (JP)
NATORI YOSHIAKI (JP)
TAKEDA KAZUTOSHI (JP)
TANAKA ICHIRO (JP)
HORI HIROKI (JP)
NATORI YOSHIAKI (JP)
TAKEDA KAZUTOSHI (JP)
TANAKA ICHIRO (JP)
HORI HIROKI (JP)
Application Number:
PCT/JP2023/009983
Publication Date:
September 21, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C22C38/00; C22C38/60; H01F1/147
Domestic Patent References:
| WO2020136993A1 | 2020-07-02 | |||
| WO2020166718A1 | 2020-08-20 | |||
| WO2018025941A1 | 2018-02-08 |
Foreign References:
| JP2011246810A | 2011-12-08 | |||
| JP2000256751A | 2000-09-19 | |||
| KR20210079545A | 2021-06-30 | |||
| KR20210080726A | 2021-07-01 |
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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