活塞环与气缸体的磨损主要形式有磨料磨损、摩擦(微动)磨损和腐蚀磨损等,而且最主要是磨料磨损,磨损最严重的是第一道压缩环。不锈钢材料制造的钢质环进行气体氮化处理或金属物理沉积处理后,环的表面硬度可达H_v1000～1200,不仅具有极佳的耐磨性和耐蚀性,而且摩擦因数也较高强度铸铁环低得多。 The main form of wear of piston ring and cylinder block is abrasive wear, friction (fretting) wear and corrosion wear, etc., and the most important is abrasive wear. The most severe wear is the first compression ring. Steel ring made of stainless steel After gas nitriding treatment or metal physical deposition treatment, the ring surface hardness up to H_v1000 ~ 1200, not only has excellent wear resistance and corrosion resistance, but also a high friction coefficient of strength cast iron The ring is much lower.