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A Review on Dielectric Fluids Used for Sustainable Electro Discharge Machining

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Document pages: 7 pages

Abstract: Electro Discharge Machining (EDM) is a thermal energy based non-traditional machining processes. Machining takes place due to continuous recurring of the electrons from cathode to the anode thus leads to melting and vaporization of the material. Dielectric fluid is the most important component in Electro Discharge Machining. It has been found that dielectric fluids have significant effect on the machining characteristics like material removal, tool wear and surface texture of electrode material. Hydrocarbon based oil is the most commonly used in industries as dielectric fluid in EDM. Due to the decomposition of these hydrocarbon oils releases carcinogenic toxic emissions like carbon dioxide, carbon mono-oxide, benzene and polycyclic aromatic hydrocarbons etc. Wide varieties of dielectric fluids (based on water, gas and emulsions) have been used to make the EDM process sustainable. Promising results have been observed by using bio oils biodiesels as dielectric medium in EDM. In this paper, a comprehensive over view of dielectric fluids used in EDM to make the process sustainable has been reported. Finally, some of the other possible bio oils has reported which can make the process greener and safer.

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