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汽车发动机在装配好之后,为使配合副能承受使用载荷,配合副必须经由一个适应使用载荷的过程,即进行磨合,以便配合副作好承受载荷的表面准备。在磨合过程中,配合副的摩擦表面逐渐形成能够承受和传递正常使用的额定载荷的工作表面。为此,一般发动机都要经过较长时间的磨合。但磨合时间长,耗油量大。为了缩短磨合时间,不影响性能要求,在材料和机械加工工艺已经确定的情况下,一般人们都试图对配合副进行适当的表面处理,以改善配合副的工作条件。磷化膜可减少互相接触的钢铁零件表面的摩擦阻力,改善润滑剂的保持性,减少零
After the automobile engine is assembled, in order to make the mating sub-endure the service load, the mating pair must pass through a process of adapting to the load, that is, running in order to cooperate with the side to prepare the surface to bear the load. In the running-in process, the friction surfaces of the mating pair gradually form a work surface capable of withstanding and transmitting the nominal load of normal use. To this end, the general engine have to go through a long time running. But run-in time, fuel consumption. In order to shorten the run-in time, does not affect the performance requirements, materials and machining processes have been identified in the circumstances, the general people are trying to fit the Deputy appropriate surface treatment to improve the working conditions of the Deputy. Phosphate film can reduce the frictional resistance of the surface of the steel parts contacting with each other, improve the retention of the lubricant, reduce the zero