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:
Sep. 27, 2016
Filed:
Apr. 13, 2012
Tatsuo Yokoi, Tokyo, JP;
Hiroshi Shuto, Tokyo, JP;
Riki Okamoto, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Kazuaki Nakano, Tokyo, JP;
Takeshi Yamamoto, Tokyo, JP;
Tatsuo Yokoi, Tokyo, JP;
Hiroshi Shuto, Tokyo, JP;
Riki Okamoto, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Kazuaki Nakano, Tokyo, JP;
Takeshi Yamamoto, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
In a hot-rolled steel sheet, an average pole density of an orientation group of {100}<011> to {223}<110>, which is represented by an arithmetic average of pole density of each orientation of {100}<011>, {116}<110>, {114}<110>, {112}<110>, and {223}<110> in a center portion of a sheet thickness which is a range of the sheet thickness of ⅝ to ⅜ from a surface of the steel sheet, is 1.0 or more and 4.0 or less, the pole density of a crystal orientation of {332}<113> is 1.0 or more and 4.8 or less, an average grain size in a center in the sheet thickness is 10 μm or less, and a microstructure includes, by a structural fraction, pearlite more than 6% and ferrite in the balance.