Title:
Non-oriented electrical steel sheet and its manufacturing method
Document Type and Number:
Japanese Patent JP6319465
Kind Code:
B2
Abstract:
Iron loss is reduced by increasing magnetic flux density. A non-oriented electrical steel sheet has a chemical composition containing, by mass%, C: 0.0050 % or less, Si: 1.50 % or more and 4.00 % or less, Al: 0.500 % or less, Mn: 0.10 % or more and 5.00 % or less, S: 0.0200 % or less, P: 0.200 % or less, N: 0.0050 % or less, and O: 0.0200 % or less, with the balance consisting of Fe and inevitable impurities, in which the steel sheet has an Ar 3 transformation temperature of 700 °C or higher, a grain size of 80 µm or more and 200 µm or less, a Vickers hardness of 140 HV or more and 230 HV or less.
Inventors:
Yoshihiko Oda
Tadashi Nakanishi
Tomoyuki Okubo
Zaizen Yoshiaki
Hiroaki Nakajima
Tadashi Nakanishi
Tomoyuki Okubo
Zaizen Yoshiaki
Hiroaki Nakajima
Application Number:
JP2016570066A
Publication Date:
May 09, 2018
Filing Date:
August 25, 2016
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C22C38/00; C21D8/12; C22C38/06; C22C38/14; H01F1/147
Domestic Patent References:
| JP2001059145A | ||||
| JP2001073097A | ||||
| JP2002180213A | ||||
| JP2004084053A | ||||
| JP2011140683A | ||||
| JP11172382A | ||||
| JP57052410B2 |
Foreign References:
| KR1020100071213A |
Attorney, Agent or Firm:
Kenji Sugimura
Keisuke Kawahara
Kaori Oshima
Keisuke Kawahara
Kaori Oshima