Patent Number: 6,332,904

Title: Mixed powder metallurgy process

Abstract: A mixed powder for powder metallurgy process, comprises prealloy type steelmother powder containing alloy components in a range of 1.5 to 4, alloyedmicro powder and Ni powder. A preparation method of iron base sinteredcompact by blending this mixed powder with graphite powder, compressedpowder molding the same and sintering at 1050 to 1250.degree. C., and aniron base sintered compact of high tensile strength and fatigue strengthobtained by this preparation method.

Inventors: Fujiki; Akira (Kanagawa-ken, JP), Aoki; Toshiaki (Shizuoka-ken, JP), Marumoto; Kazuhiro (Shizuoka-ken, JP), Yoshida; Masaki (Hyogo-ken, JP), Tanaka; Hiroyuki (Osaka, JP)

Assignee:

International Classification: C22C 38/42 (20060101); C22C 33/02 (20060101); C22C 38/44 (20060101); C22C 38/08 (20060101); C22C 38/12 (20060101); C22C 033/05 (); B22F 003/12 ()

Expiration Date: 12/25/2014