A Study on the Characteristics of Bearing Alloys : 3 rd Report

Abstract

Some properties of friction and wear of Al-base bearing alloys under dry or wet condition were investigated. The results of this investigation were as follows : (1) Under dry condition : When the speed was low, the rates of increase of wear decreased with the increase of load. But when the speed became high, the wear increased rapidly with the load beyond a certain amount of load. The wear decreased with the increase of speed to a certain minimum value and the speed at which the wear was minimum, became low as the load increased, and this tendency was conspicuous with AlJ1. (2) Under wet condition : The wear decreased generally with the increases of load and speed. When AlJ1 was used, this decrease was larger. The coefficient of friction of AlJ1 increased rapidly with the decrease of Zn/P below a value of Zn/P where the coefficient of friction showed a minimum value. Under a certain load, the coefficient of friction was almost constant regardless of the speed with every alloy.