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:
May. 28, 2019
Filed:
Jan. 30, 2013
Jfe Steel Corporation, Chiyoda-ku, Tokyo, JP;
Nobuyuki Nakamura, Tokyo, JP;
Katsumi Nakajima, Tokyo, JP;
Yoshimasa Funakawa, Tokyo, JP;
Kazutaka Okimoto, Tokyo, JP;
Takahiko Ogura, Tokyo, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A hot-rolled steel sheet for a generator rim contains a structure containing a ferrite phase with an areal ratio of 95% or more in which precipitates containing Ti and V whose average grain diameter is less than 10 nm are precipitated in crystal grains of the ferrite phase. The ferrite phase has an average crystal grain diameter within the range of 2 μm or more and less than 10 μm. The hot-rolled steel sheet for a generator rim has strength with a yield strength YS in a rolling direction of 700 MPa or more and electromagnetic properties with a magnetic flux density Bof 1.5 T or more and a magnetic flux density Bof 1.6 T or more.