A review on recent advancement of micro electrical discharge machining

The requirement of microstructure products has shown consistency growth in recent years. Micro EDM (μEDM) is non traditional machining process used for manufacture of micro-components because of its the high precision, low tolerance and improved surface structure. It is a thermoelectric process in which mechanism of material erosion of work-piece is based melting and vaporization of material. This method is used to manufacture micro-parts with the range of 50 μm -100 μm.. At least twenty papers were briefed and the detail were classified into three major heading, namely micro EDM, micro drilling and micro EDM development. The three machining process explained in terms of improved machining process, application of various materials, fabrication of small feature size, high aspect ratio.