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:
Apr. 12, 2011
Filed:
Dec. 06, 2005
Ichirou Tanaka, Osaka, JP;
Hiroshi Fujimura, Osaka, JP;
Hirokatsu Nitomi, Osaka, JP;
Hiroyoshi Yashiki, Osaka, JP;
Kouji Nishida, Osaka, JP;
Hiroki Takamaru, Osaka, JP;
Ichirou Tanaka, Osaka, JP;
Hiroshi Fujimura, Osaka, JP;
Hirokatsu Nitomi, Osaka, JP;
Hiroyoshi Yashiki, Osaka, JP;
Kouji Nishida, Osaka, JP;
Hiroki Takamaru, Osaka, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A main object thereof is to provide a non-oriented electrical steel sheet being excellent in surface characteristics and having both excellent mechanical characteristics and magnetic characteristics necessary for a rotor of rotating machines such as motors and generators which rotate at a high speed, and a method for producing the same. To achieve the object, the present invention provides a non-oriented electrical steel sheet comprising in % by mass: 0.06% or less of C; 3.5% or less of Si; from 0.05% or more to 3.0% or less of Mn; 2.5% or less of Al; 0.30% or less of P; 0.04% or less of S; 0.02% or less of N; at least one element selected from the group consisting of Nb, Ti, Zr and V in the predetermined range; and a balance consisting of Fe and impurities; and having a recrystallized fraction being less than 90%.