Patent ID: 6273972
Filing Date: 2001-08-14
Classification: B22D,F16C,Y10S,Y10T

Abstract:
A method of making a layered bearing element comprising the steps of:(a) preheating steel strip forming a carrier material for said layered bearing element to a temperature of 1000.degree. C. to 1100.degree. C. to produce a preheated steel strip;(b) in a continuous strip casting process, casting onto the preheated steel strip a lead-free copper-zinc or copper-aluminum bearing alloy at a casting temperature of 1000.degree. C. to 1250.degree. C. to form a heterogeneous bearing layer on the steel strip and produce a layered product;(c) cooling the layered product from said casting temperature to 100.degree. C. over a period of 2 to 4 minutes to produce an .alpha. phase and a .beta. phase in said layer with said .alpha. phase and said .beta. phase being present in a ratio of 1.5 to 3 in said layer; and(d) thereafter annealing the layered product to raise said ratio to 6.