A REVIEW OF CURRENT RESEARCH ON POWDER MIXED ELECTRIC DISCHARGE MACHINING

In Die Sink electric discharge machining, mostly the dielectric material is in the liquid state such as mineral oils, kerosene, transformer oil, electric discharge machining oils or synthetic oils. Inferior surface quality, higher tool wear ratio, lesser material removal rate and higher machining time are the main disadvantages of using these dielectric fluids in electric discharge machining. The use of powder mixed with dielectric fluid named as a powder mixed electric discharge machining (PMEDM) is dependable to overcome the above-mentioned disadvantages and electric discharge machining performance improvement,. The current paper presents a literature review on the usage and effects of powder mixed electric discharge machining in characteristics of electrical discharge machining