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. 16, 2019
Filed:
Jul. 02, 2015
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Kenichi Murakami, Tokyo, JP;
Yoshiaki Natori, Tokyo, JP;
Takuya Matsumoto, Tokyo, JP;
Hiroki Hori, Tokyo, JP;
Takeaki Wakisaka, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A non-oriented magnetic steel sheet includes a specific chemical composition represented by, in mass %: Si: 3.0% to 3.6%; Al: 0.50% to 1.25%; Mn: 0.5% to 1.5%; Sb or Sn or both of them: [Sb]+[Sn]/2 is 0.0025% to 0.05% where [Sb] denotes an Sb content and [Sn] denotes an Sn content; P: 0.010% to 0.150%; Ni: 0.010% to 0.200%; C: 0.0010% to 0.0040%; and others. The thickness of the non-oriented magnetic steel sheet is 0.15 mm to 0.30 mm. the non-oriented magnetic steel sheet includes magnetic properties represented by, where t denotes a thickness (mm) of the non-oriented magnetic steel sheet: a magnetic flux density B50: '0.2×t+1.52' T or more; a magnetic flux density difference ΔB50: 0.08 T or less; core loss W10/50: 0.95 W/kg or less; and core loss W10/400: '20×t+7.5' W/kg or less. A ratio of a number of intergranular carbides precipitated in grains relative to a sum of the number of the intergranular carbides and a number of grain boundary carbides precipitated on grain boundaries is 0.50 or less.