ABSTRACT
EDM is one of the most advanced, non-traditional material removal processes which may help overcome the limitations of conventional mechanical cutting methods. This study represents the recent trends in EDM process. The varying input parameters are identified as peak current Ip, pulse duration Ton, types of dielectric medium and powder-mixed dielectrics. The output responses are measured as Material Removal Rate (MRR), Tool Wear Rate (TWR) and Surface Roughness (Ra). MRR was found to increase with powder-mixed dielectrics. Ton and Ip seems to be the most influencing factors for MRR. Addition of powders like SiC and B4C to the dielectric lowers the tool wear. Ra improves with addition of powder to the dielectric medium and also the desired properties like hardness, corrosion resistance etc are imparted to the machined surface of the work piece.
