HOT-ROLLED STEEL SHEET FOR NON-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2022/176154

A1

In this hot-rolled steel sheet for a non-oriented electromagnetic steel sheet, the Vickers hardness of a sheet width end part is not less than 180 Hv and a value obtained by subtracting the Vickers hardness of a sheet width center part from the Vickers hardness of the sheet width end part is 10-100 Hv. The ductile-brittle transition temperature at the sheet width end part is not more than 0°C, and a value obtained by subtracting the ductile-brittle transition temperature at the sheet width end part from the ductile-brittle transition temperature at the sheet width center part is 10-100°C. A value obtained by subtracting the sheet thickness of the sheet width end part from the sheet thickness of the sheet width center part is not more than 50 μm.

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ARITA YOSHIHIRO (JP)
ICHIE TAKERU (JP)
MURAKAMI FUMINOBU (JP)

PCT/JP2021/006320

August 25, 2022

February 19, 2021

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NIPPON STEEL CORP (JP)

C21D8/12; C22C38/00; C22C38/06

WO2013069754A1

2013-05-16

JP2000226616A	2000-08-15
JP2008050685A	2008-03-06
JP2016211016A	2016-12-15
JP2017133100A	2017-08-03
JP2010242186A	2010-10-28
JPH046220A	1992-01-10

TANAI Sumio et al. (JP)

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