42CrMo钢用于制造弧形齿联轴器的各种关键精密机械零件,如内外齿轴套和内外齿轮等各种关键零件。并且要求表面具有高硬度和耐磨、耐蚀性能及较高冲击韧性。因此,才能满足各种机械零件的技术性能要求。对这些精密机械零件,除了选择适合的材料之外,还需要进行适合的化学热处理来改善金属材料的表面成分和组织性能。采用气体多元共渗是很有效 42CrMo steel for the manufacture of arc-shaped coupling of various key precision machinery parts, such as internal and external gear sleeve and internal and external gear and other key components. And requires the surface with high hardness and wear resistance, corrosion resistance and high impact toughness. Therefore, to meet the technical performance requirements of various mechanical parts. For these precision mechanical parts, in addition to choosing the right material, suitable chemical heat treatment is also required to improve the surface composition and texture properties of the metal material. Multi-gas infiltration is very effective