结构钢所制造的齿轮、轴等各种零件是挖掘机传动系统中的关键件。因此,材料的机械性能和热处理工艺对于制造与使用质量都会有很大影响。挖掘机工作时的重要特点是载荷多变且冲击,振动频繁。有时还要在高寒、高原地带和超载的情况下作业。此外,挖掘机传动零件间 The various components such as gears and shafts manufactured by structural steel are key components in the drive system of the excavator. Therefore, the mechanical properties of the material and the heat treatment process have a great influence on the quality of manufacture and use. The important feature of excavator working is that the load is varied and shocked and the vibration is frequent. Occasionally, working in the high cold, high altitude areas and overloaded conditions. In addition, excavator transmission parts