| 摘要 |
PURPOSE:To provide an abrasion-resistant sintered alloy which withstands a high face pressure in particular and is suitable for a wear-resistant vane by molding and sintering Fe alloy powder contg. Cr, W or Mo and a powder mixture composed of a prescribed ratio of carbon powder and the balance iron powder so that the composite carbide consisting essentially of Cr is uniformly dispersed in a pearlite base. CONSTITUTION:A powder mixture composed, by weight, of 30.0-98.0% Fe alloy powder contg. 7.0-15.0% Cr and 1.0-10.0% W or Mo, 0.8-3.5% carbon powder and the balance iron powder is prepd. The powder mixture is then molded and sintered by an ordinary method to obtain a wear-resistant sintered ally dispersed uniformly with the composite carbide consisting essentially of Cr in the pearlite base. If the above-mentioned sintering is accomplished at about 1,100 deg.C which is an ordinary sintering temp., the base is converted to the pearlite base and the substantial wear resistance is obtd. where ordinary loading force is provided. Such sintered alloy is the wear-resistant sintered alloy suitable as a sliding member for a rotary type fluid pump of an air conditioner, cooler, etc.
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