Technological method for controlling generation of cracks on cam of marine diesel engine

The invention provides a technological method for controlling a marine diesel engine cam to generate cracks, and belongs to the technical field of cam machining. The content of retained austenite of a carburizing layer is strictly controlled during cam carburizing and quenching, and decomposition of the retained austenite during subsequent grinding machining is reduced; artificial aging treatment and shot peening strengthening treatment are added after rough grinding, so that a certain amount of pressure stress is formed on the surface of the cam, tensile stress generated in the grinding process is counteracted, grinding parameters are accurately controlled, and the tendency of generating cracks is reduced. According to the process method, machining of the cam is achieved, the final size of the part is guaranteed, the performance meets the drawing requirement, and the product quality is improved. 提供一种控制船用柴油机凸轮产生裂纹的工艺方法，属于凸轮加工技术领域，本发明通过在凸轮渗碳淬火时严格控制渗碳层残余奥氏体的含量，减少后续磨削加工时残余奥氏体的分解；粗磨后增加人工时效处理和喷丸强化处理，使凸轮表面形成一定数量的压应