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. 21, 2020
Filed:
Oct. 05, 2015
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Yoshihiro Serizawa, Sakura, JP;
Akihiro Sakamoto, Kisarazu, JP;
Masahito Tasaka, Nishinomiya, JP;
Naoaki Shimada, Kisarazu, JP;
Ryuji Hamada, Kimitsu, JP;
Hideki Matsuda, Chiba, JP;
Norimasa Yamasaki, Kisarazu, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
According to the present invention, there is provided a cooling apparatus for a steel material in which one portion in a longitudinal direction of an elongated steel material () is heated while the steel material is fed in the longitudinal direction in a state where one end portion of the steel material is gripped, and the one end portion is moved in a two-dimensional or three-dimensional direction so as to form the steel material into a predetermined shape including a bent portion and thereafter to cool a heated portion including the bent portion. The cooling apparatus includes a first cooling apparatus () that ejects a first cooling medium to the heated portion, and a second cooling apparatus () that is disposed on a downstream side from the first cooling apparatus when viewed along a feeding direction of the steel material, and that ejects a second cooling medium to the heated portion. A plurality of the second cooling apparatuses are disposed along the feeding direction, and flow rates of the second cooling media can be controlled independently of each other. According to the configuration, it is possible to reduce the insufficient quenching of the steel material.