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. 25, 2001
Filed:
Sep. 11, 2000
Applicant:
Inventors:
Akira Fujiki, Kanagawa-ken, JP;
Toshiaki Aoki, Shizuoka-ken, JP;
Kazuhiro Marumoto, Shizuoka-ken, JP;
Masaki Yoshida, Hyogo-ken, JP;
Hiroyuki Tanaka, Osaka, JP;
Assignee:
Nissan Motor Co., Ltd., Kanagawa-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 3/305 ; B22F 3/12 ;
U.S. Cl.
CPC ...
C22C 3/305 ; B22F 3/12 ;
Abstract
A mixed powder for powder metallurgy process, comprises prealloy type steel mother powder containing alloy components in a range of 1.5 to 4, alloyed micro powder and Ni powder. A preparation method of iron base sintered compact by blending this mixed powder with graphite powder, compressed powder molding the same and sintering at 1050 to 1250° C., and an iron base sintered compact of high tensile strength and fatigue strength obtained by this preparation method.