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. 09, 2013
Filed:
May. 13, 2010
Yoshihiro Serizawa, Tokyo, JP;
Yasuhiro Nishiyama, Tokyo, JP;
Shigeru Ogawa, Tokyo, JP;
Shinji Ida, Tokyo, JP;
Hitoshi Nikaidoh, Tokyo, JP;
Isao Yoshii, Tokyo, JP;
Noriyuki Hishinuma, Tokyo, JP;
Tetsuo Kishimoto, Tokyo, JP;
Nobuhiro Takagi, Tokyo, JP;
Yoshihiro Serizawa, Tokyo, JP;
Yasuhiro Nishiyama, Tokyo, JP;
Shigeru Ogawa, Tokyo, JP;
Shinji Ida, Tokyo, JP;
Hitoshi Nikaidoh, Tokyo, JP;
Isao Yoshii, Tokyo, JP;
Noriyuki Hishinuma, Tokyo, JP;
Tetsuo Kishimoto, Tokyo, JP;
Nobuhiro Takagi, Tokyo, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
The present invention provides a method of cooling a hot-rolled steel strip which has passed through a finishing rolling, including: cooling the hot-rolled steel strip from a first temperature of not lower than 600° C. and not higher than 650° C. to a second temperature of not higher than 450° C. with cooling water having the water amount density of not lower than 4 m/m/min and not higher than 10 m/m/min, wherein with respect to the area of the target surface, the area of a portion where a plurality of spray jets of the cooling water directly strikes on the target surface is at least 80%.