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. 30, 2013
Filed:
Apr. 28, 2006
Takao Taniguchi, Anjo, JP;
Hisao Shirai, Anjo, JP;
Kouji Ohbayashi, Anjo, JP;
Kazuaki Okada, Anjo, JP;
Hideo Kanisawa, Anjo, JP;
Shuji Kozawa, Anjo, JP;
Takao Taniguchi, Anjo, JP;
Hisao Shirai, Anjo, JP;
Kouji Ohbayashi, Anjo, JP;
Kazuaki Okada, Anjo, JP;
Hideo Kanisawa, Anjo, JP;
Shuji Kozawa, Anjo, JP;
Aisin AW Co., Ltd., , JP;
Abstract
A steel component formed by carburizing and then induction-hardening of a steel consisting essentially of, by mass, C: minimum 0.08% and less than 0.3%; Si: maximum 2.0%; Mn: from 0.2% to 3.0%; P: maximum 0.03%; S: from 0.005% to 0.05%; Ni: maximum 1.5%; Cr: maximum 3.0%; Mo: maximum 1.0%; O: maximum 0.0025%; and N: from 0.005% to 0.03%; and further including either or both of, by mass, Al: from 0.005% to 0.05%, and Ti: from 0.005% to 0.05%; and still further including either or both of, by mass, V: maximum 0.3%, and Nb: maximum 0.3%; and a balance including Fe and unavoidable impurities. The hardness of the surface layer is at least 55 HRC and the hardness of the core portion is from 20 to 50 HRC. The core portion does not include a martensite structure.