为了改善内燃机和压缩机活塞环的磨合性和提高其耐磨性,对活塞环进行镀锡、热磷化、以液态胶状石墨液体所进行的石墨化和多孔性镀铬,而对气缸缸套则进行磷比、镀铬和渗氮。这些处理方法具有很好的效果,但是较复杂,并且须要采用昂贵的设备;由于有害气体的析出,采用这些化学物品,会使装置的操作工作人员的劳动条件恶化。同时从文献[1]～[3]可知,在蒸汽气氛中处理,可提高高速 In order to improve the running-in of the internal combustion engine and the compressor piston ring and to improve the wear resistance, the piston rings are tinned and thermally phosphated, graphitized and porous chrome plated with liquid colloidal graphite liquid, Then the phosphorus ratio, chrome plating and nitriding. These treatments work well, but are complicated and require expensive equipment; the use of these chemicals, due to the evolution of noxious gases, can worsen the working conditions of the plant’s handling staff. At the same time, it can be seen from the literature [1] to [3] that the treatment in the steam atmosphere can improve the high speed