Electrical Discharge Machining Process- A Case Study

Electrical Discharge Machine (EDM) is especially used for the manufacturing of 3D complex geometry and hard material parts that are extremely difficult-to-machine by conventional machining processes. Electrical Discharge Machining is a thermo-electric machining process in which removal of material takes place through the process of discharge of controlled spark generated in interval between the tool electrode and work-piece material which are connected to positive and negative connection of generator and both are submerged in dielectric medium. The main goal of EDM users and manufactures is to achieve a better stability of the process higher productivity and precision machining i.e. with desired accuracy and minimum surface damage. However due to large number of process variables even a highly skilled operator with a state-of-the art EDM is rarely able to achieve the optimal performance. Therefore the need arises to reduce the cost and time of experimentation to find optimal setting of process parameters and allow the EDM operator to set them according to the customer's demand.