Title:
NON-ORIENTED ELECTROMAGNETIC STEEL SHEET, IRON CORE AND MOTOR CORE, AND METHOD FOR MANUFACTURING IRON CORE AND MOTOR CORE
Document Type and Number:
WIPO Patent Application WO/2023/063369
Kind Code:
A1
Abstract:
Provided is a non-oriented electromagnetic steel sheet comprising a base steel plate and an insulating coating formed on the surface of the base steel plate, wherein the base steel plate has a chemical composition containing, in mass%, 0.0030% or less of C, 3.2-6.5% of Si, 0.05-3.5% of Mn, 0.005-0.10% of P, 0.0030% or less of S, 1.0% of less of Al, 0.0030% or less of Ti, 0.0010% or less of B, 0.030% or less of Mo, 0.0010% or less of V, 0-0.0050% of Ca, 0-0.0050% of Mg, and 0-0.0050% of REM, with the remainder comprising Fe and impurities, the chemical composition satisfying [S-5/3×Mg-4/5×Ca-1/4×REM<0.0005], and the insulating coating has a chemical composition satisfying [[M]-[C]＋1/2×[O]>0].
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Inventors:
NATORI YOSHIAKI (JP)
TAKEDA KAZUTOSHI (JP)
YASHIKI HIROYOSHI (JP)
FUKUCHI MINAKO (JP)
TAKEDA KAZUTOSHI (JP)
YASHIKI HIROYOSHI (JP)
FUKUCHI MINAKO (JP)
Application Number:
PCT/JP2022/038106
Publication Date:
April 20, 2023
Filing Date:
October 12, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C21D9/00; C22C38/00; C22C38/14; C22C38/60; C23C22/00; H01F1/147; H01F41/02
Domestic Patent References:
| WO2018025941A1 | 2018-02-08 | |||
| WO2021117325A1 | 2021-06-17 | |||
| WO2016125783A1 | 2016-08-11 |
Foreign References:
| JP2021031714A | 2021-03-01 | |||
| JP2009068055A | 2009-04-02 | |||
| JP2000054085A | 2000-02-22 |
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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