Published Paper Details:

EDM is an unconventional electro thermal machining process used for manufacturing geometrically complex or hard material parts that are extremely difficult-to-machine by conventional machining process. The process involves a controlled erosion of electrically conductive materials by the initiation of rapid and repetitive spark discharges between the tool and work piece separated by a small gap of about 0.01mm to 0.50mm. This gap is either flooded or immersed in a dielectric fluid. The controlled pulsing of direct current between the tool and the work piece produces the spark discharge. This paper reviews the vast array of research work carried out within past decades for the development of EDM. This study is mainly focused on surface quality and metal removal rate which are the most important parameters from the point of view of selecting the relevant process parameters as well as different heat treatment process. This process will be established for the Better tool life and Better Surface finish.