一、概述早在四十年代,欧洲一些国家已用11％硅铝合金作为曲轴轴承的材料。由于当时技术水平只能铸成整体轴瓦,因而限制了使用范围,未能推广使用。直到六十年代末,英国首次成功地将这种合金覆在钢板上,才显示出它的优越性。目前,覆有这种合金的双金属轴瓦通过疲劳与表面性能试验后,英国、美国和苏联都已在发动机上作台架试验,结果表明,这种双金 First, an overview As early as the forties, some European countries have used 11% silicon-aluminum alloy as a crankshaft bearing material. Because at that time the technology can only be cast as a whole bearing pad, thus limiting the scope of use, failed to promote the use of. It was not until the late 1960s that Britain first demonstrated its superiority by successfully coating this alloy on steel. At present, the United States, the United States and the Soviet Union have bench-tested the engine after the bimetallic bearing with this alloy has passed fatigue and surface performance tests. The results show that this bimetal