Effect of Process Parameters on the Performance of Micro-EDM

Electrical discharge machining (EDM) is an important process in the field of micro machining. However, a number of issues remain to be solved in order to successfully implement it in an industrial environment. One of these issues is the processing time. This paper investigates the optimization of machining parameters for Material Removal Rate and over cut in micro EDM. In one case, the parameters are selected to achieve the highest material removal rate (MRR). In the other case, the lower over cut is targeted. Some of the main difficulties linked with micro EDM are caused by the high wear occurring on the electrode. The study focuses on a specific combination of electrode and workpiece material and proposes a typical method for micro EDM process.