アルミニウム青銅系焼結含油軸受合金の軸受性能について

概要

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By using the Suzuki-type wear testing machine, the bearing performance of oil impregnated aluminium bronze sintered bearings, made from copper composite powders chemically plated with nickel and γ2(Cu9Al4) alloy powders, was measured, and also compared with those of the oil impregnated Cu-Sn and Fe-Cu sintered bearings which are in practical use. The following results are obtained from this experiment. (1) The bearing temperature of the Cu-Sn and the Fe-Cu sintered bearings raised linearly with increasing the PV factor. But the bearing temperature of the aluminium bronze sintered bearings scarcely raised up to 2500 kg/cm2⋅m/min of the PV factor which is the upper limit of this experiment, e.g. the temperature increment is about 40°C. (2) Judging from a correlation between the temperature coefficient of friction and the PV factor the oil impregnated aluminium bronze sintered bearings are thought to be preferably employed in running at high speed and heavy loading operation.