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:
Oct. 16, 2012
Filed:
Jan. 15, 2007
Hidetoshi Fujii, Osaka, JP;
Yasufumi Yamaguchi, Osaka, JP;
Toshitake Kanno, Shizuoka, JP;
Yoya Fukuda, Shizuoka, JP;
Hidetoshi Fujii, Osaka, JP;
Yasufumi Yamaguchi, Osaka, JP;
Toshitake Kanno, Shizuoka, JP;
Yoya Fukuda, Shizuoka, JP;
Osaka University, Osaka, JP;
Kimura Chuosho Co., Ltd., Shizuoka, JP;
Abstract
A method of metal surface hardening treatment inducing transformation, in which transformation is induced in a surface interior of material as hardening treatment object by simple, rapid treatment utilizing a frictional heat under pressure without the occurrence of melt loss, quench crack, soft spot, deformation, etc. to thereby reform the structure of surface interior of material as hardening treatment object into a miniaturized martensitic structure. The method of surface hardening treatment comprised the steps of while rotating nearly cylindrical pressurization tool () at high velocity, pressing the bottom face thereof slightly into the surface of material as hardening treatment object () so as to attain application of given pressure, thereby generating a local frictional hear between the pressurization tool and the material as hardening treatment object; inducing transformation in the material as hardening treatment object at the locality having been exposed to the frictional heat; and when the surface of material as hardening treatment objent positioned in the vicinity of the pressurization tool starts to soften by the frictional heat, moving the pressurization tool.