电火花强化采用了脉冲放电技术,直接利用电极和工件之间产生火花放电时的热能,使两者的局部材料熔融并合金化,从而工件表面形成合金化的强化层和扩散层,使工件表面的物理、机械以及化学性能得到改善。设备由两部分组成(图1),即脉冲发生器和振动器。由脉冲发生器周期地提供火花放电能量,它由直流电源、限流电阻R、充电电感L和充放 EDM uses pulse discharge technology, the direct use of sparks between the electrode and the workpiece when the heat generated when the two parts of the local material melting and alloying, and thus the workpiece surface alloying layer and the formation of diffusion layer, the workpiece surface The physical, mechanical and chemical properties are improved. The equipment consists of two parts (Figure 1), the pulser and the vibrator. Periodically by the pulse generator to provide spark discharge energy, which consists of DC power supply, current limiting resistor R, charging inductance L and charge