Studies on Electro Discharge Machining

EDM is a thermal process that involves melting and vaporization of the work-piece. During EDM, both are submerged in the electrically resistant dielectric oil. The EDM process uses electrical discharges to remove material from the workpiece, with each spark producing a temperature of between 10,000-20,000°C. Consequently, the workpiece is subjected to a heat affected zone. Tungsten carbide is a chemical compound containing tungsten and carbon. Its extreme hardness makes it difficult to machine. In this book the main effect, interaction between factors on Material removal rate [MRR] and Electrode Wear Rate [EWR] are discussed. The work is carried out on two fronts, [a] MRR and [b] EWR, Transformer oil and Kerosene oils are used as dielectric media. The effect of current, electrode diameter and on-time are studied. DOE technique is used for performing the experimentation. It is experimentally found that the Kerosene is more useful as MRR is high and EWR is low. On-time has the most significant effect on the responses MRR and EWR. Current is second parameter having significant effect. Electrode diameter has less significant effect.

Autorentext

Dr. Mohan Khire, obtained Mechanical Engineering Degree 1977, Masters and Doctoral in 1989 & 2005. Govt. of Maharashtra honored him as 'Best Engineering College Teacher in 2006. 90+ research publications & 5 Books at his credit. 50 PG & 3 Ph.D. students are supervised.Magdum Basaveshwar Annappa is pursuing his carrier in industry after his M.Tech.