基于电火花加工方法的表面改性技术研究

研究了一种在普通电火花加工机床上实现金属工件表面改性的新方法。它是在传统电火花加工方法的基础上，采用TiC-Co半烧结体电极和普通煤油工作液，在工件表面形成一层硬质陶瓷层，从而达到改善工件表面性能的目的，这种新方法被称之为放电沉积。对放电沉积原理进行了探讨，在大量试验的基础上，总结了放电沉积的工艺方法。通过扫描电镜、电子探针、X射线衍射分析、摩擦磨损等试验，对形成的沉积层特性进行了定量和定性分析。最后利用该方法在普通的高速钢车刀上进行了初步应用。试验与分析表明，该方法是一种极具潜力的金属表面改性方法。

Research on Surface Modification Technology using Electrical Discharge Machining

This paper described a new method of surface modification using ordinary Electrical Discharge Machining (EDM) tool. On the basis of ordinary EDM method,a hard ceramic layer can be deposited on the workpiece surface with TiC-Co semi-sintered electrode and kerosene fluid,so the surface property of the workpiece was improved. This new revolutionary method is called Electrical Discharge Coating (EDC). The EDC method was studied systemically,the characteristics of the hard ceramic layer and the applications of this method to the surface of the tools were also discussed.