INFLUENCE OF ELECTRODE MATERIAL ON QUALITY OF BLIND HOLES MACHINED VIA ELECTRIC DISCHARGE MACHINE (DIE SINKER)

Electric Discharge Machining (EDM) has become a popular machining process for dies and moulds industry. Hole making operations constitute a majority of the operations in dies and molds industry. EDM utilizes an electrode for its principle requirements for the erosion of work piece materials. This research paper is aimed to find the effects of different types of electrode materials namely Copper, Graphite and Tungsten Carbide on the quality of blind holes generated during the operation. The quality of blind holes is evaluated in term of surface roughness, diameter error and axial error. Graphite as an electrode is found to be the most suitable for most of performance characteristics