电火花表面强化新工艺,是一种简便灵活的金属表面处理方法,它通过RC电路的脉冲放电产生电火花,把硬质合金等金属电极材料熔渗到被强化的金属工件表面构成强化层。把硬质合金涂复在模具、刀具及各种易损机械零件的表面后,硬度可达HV1100～1400(相当于HRC70～72),增加耐磨性,延长使用寿命1～3倍。 EDM surface hardening of new technology is a simple and flexible method of metal surface treatment, which discharges through the RC circuit sparks, the metal carbide electrode materials such as infiltration to be reinforced metal workpiece surface to form a strengthening layer. The hard alloy coated on the mold, tools and various vulnerable mechanical parts surface, the hardness up to HV1100 ~ 1400 (equivalent to HRC70 ~ 72), increase wear resistance, extend the service life of 1 to 3 times.