EDM is the non-conventional process that has used, extensively, for cutting
harder like nickel and its alloys, titanium and complex shape materials which are
difficult to machine by other conventional processes. EDM utilizes, electrical and heat,
energy to machine the workpiece by removing the undesirable material. This process
use two electrodes, anode and cathode out of which tool act as cathode and the
workpiece on which the job is being performed act as anode. Various factors like
current, pulse on and off time, voltage applied can be used to optimize the major
machining parameters of EDM like MRR, rate of tool wear, surface roughness etc. the
main focus of this study these parameters on composite materials made of CMs,
tungsten and cobalt carbides etc. In the end future prospective of the areas which
require further improvements and investigations has also been discussed.
Keywords: Ceramic, Composite materials, Electrical discharge machining.
