MANUFACTURE OF SINTERED COPPER ALLOY HAVING SELF LUBRICATING PROPERTY, MATERIAL SHEET AND POWDER FOR SINTERED COPPER ALLOY

摘要

PURPOSE:To manufacture the titled alloy superior in wear resistance and pressing strength, by mixing specified quantities of Mo and graphite to copper alloy powder having a specified compsn. contg. Ni, Sn, P, forming the mixture to sheet together with organic binder, then sintering it. CONSTITUTION:To copper alloy powder contg. by weight 5-30% Ni, 7-13% Sn, 0.3-2% P, as lubricating powder, 1-5% Mo powder and 1-2.5% graphite powder are mixed to prepare material powder. A suitable quantity of synthetic resin binder is added to the material powder, these are mixed by kneader, etc., to obtain mixture in which the material powders are uniformly dispersed in synthetic resin binder. Next, the mixture is formed to material sheet by rolling mill, etc. The sheet is charged in vacuum sintering furnace, etc., and heated. In this way, synthetic resin binder in material sheet is decomposed and removed, the material powder is sintered and the titled alloy providing superior wear resistance and high compressing strength is obtd.