A Study on the Characteristics of Bearing Alloys (1 st Report)

Abstract

For the six kinds of white metal bearing alloys, we have studied the hardness distributions of ingots after cast in metal moulds, and the wear-tests under very light loads and low velocities. The following conclusions are drawn : - (i) The hardness distributions of lead-base alloys were superior to those of tin-base, and their ranges of equal hardness were more broad. (ii) Under dry-condition, amounts of wear of WJ 3, on tin-base, and WJ 9, on lead-base, were largest. The velocity at which WJ 1 showed the maximum amounts of wear was highest and that of WJ 3 was lowest, and heavier the loads were, that stuated at the lower velocity at every alloys. (iii) Under wet-condition, amounts of wear increased almost neglegible slightly with load, and decreased with velocity in the same manner. Amounts of wear of mild steels which sliding on the alloys were nearly equal for each alloy.