The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 2021
Filed:
Aug. 30, 2017
Jfe Steel Corporation, Tokyo, JP;
Yoshihiko Oda, Tokyo, JP;
Tomoyuki Okubo, Tokyo, JP;
Yoshiaki Zaizen, Tokyo, JP;
Masanori Uesaka, Tokyo, JP;
Tatsuhiko Hiratani, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
Iron loss is reduced by increasing magnetic flux density. Disclosed is 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, O: 0.0200% or less, and Ca: 0.0010% or more and 0.0050% or less, with the balance being Fe and inevitable impurities, in which the non-oriented electrical steel sheet has an Artransformation temperature of 700° C. or higher, a grain size of 80 μm or more and 200 μm or less, and a Vickers hardness of 140 HV or more and 230 HV or less.