| 摘要 |
PROBLEM TO BE SOLVED: To obtain high wear resistance and mechanical strength as well as excellent mechanical workability in the subject alloy even if expensive Co is excluded, and a forging stage is obviated by incorporating specified amounts of Cr, V, C, Mo, B, talc and anorthosite into the componential compsn. SOLUTION: Preferably, the compsn. of an Fe base sintered alloy is composed of, by weight, 4 to 8% Cr, 2 to 6% V, 1.3 to 2.0% C, 0.3 to 2.0% Mo, 0.2 to 0.6% B and 1 to 3% either or both of talc and anorthosite, and the balance Fe with inevitable impurities. If required, 0.5 to 2.0% Si is furthermore incorporated therein. Fe-B powder, C powder, talc powder, anorthosite powder, alloy powder composed of Fe-Si-Mo-Cr-V and zinc stearate are mixed, which is compressed and compacted. The compacted body is preheated, is degreased, is thereafter held in a vacuum sintering furnace and is subjected to liq. phase sintering. Next, tempering treatment is executed.
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