ABSTRACT
In automotive and aerospace industries for producing complicated shapes of high hardness and toughness, electrical discharge machining (EDM) has been commonly used [1]. Conversion of electrical energy to thermal energy is taking place by means of discrete sparks through separating dielectric medium, which causes material removal. Plasma channel is generated between electrodes, and this high temperature around 20,000°C melts the electrodes, which cause the material removal. When the 2plasma channel breaks down, materials are flushed away by means of circulating die electric fluid, which actually causes material removal.
