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:
Dec. 29, 2015
Filed:
Sep. 22, 2011
Koji Sato, Minato-ku, JP;
Takashi Toga, Yasugi, JP;
Yoshihiro Wakazono, Minato-ku, JP;
Hideki Matsumoto, Yasugi, JP;
Yusuke Shigihara, Yasugi, JP;
Koji Sato, Minato-ku, JP;
Takashi Toga, Yasugi, JP;
Yoshihiro Wakazono, Minato-ku, JP;
Hideki Matsumoto, Yasugi, JP;
Yusuke Shigihara, Yasugi, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
Provided are a manufacturing method for a blade material and a manufacturing device for a blade material, by which a long blade material can be manufactured without using a large-sized press forging machine. A manufacturing method for a blade material, in which hot forging is sequentially performed by molds from the root side to a blade (vane) tip, wherein when a root-side portion is grasped and a material to be forged is restrained by a mold, twisting is performed on a region between the grasped portion and the restrained portion. A manufacturing method for a blade material, in which hot forging and twisting are repeated, is preferable, and a manufacturing method for a blade material, in which hot forging is performed while molds are sequentially changed, is more preferable.