ABSTRACT
Advancement of technologies has resulted in the innovation of new engineering materials which are very difficult to machine with conventional machining process. Non-conductive ceramic materials are one of them. These have become important for various industrial applications .Their applications are increasing rapidly in industrial and engineering applications due to its high hardness, low thermal conductivity, and resistance to oxidation .Electro Discharge Machining (EDM) is one such innovative non-conventional process, which can machine the conductive as well as non-conductive engineering materials. Electro discharge machining (EDM) technique, a non-contact machining process, is applied for processing nonconductive ceramic using assisting electrode. In this technique, pyrolytic carbon layer on the ceramic surface formed by the cracked carbon from the carbonic dielectric plays the key role for continuous EDM. The formation of pyrolytic carbon and its stability depends upon the input power, work-piece material, tool electrode material, dielectric substance, polarity, and discharge duration. This paper explores and demonstrates the effectiveness of employing Electro Discharge Machining (EDM) for processing ceramics.
