ABSTRACT Basically Electrical discharge machining (EDM) is a well-established non-conventional
machining process, used for manufacturing geometrically complex or hard and electrically
conductive material parts that are extremely difficult-to-cut by other conventional machining
processes. Erosion pulse discharge occurs in a small gap between the work piece and the
electrode. This removes the unwanted material from the parent metal through melting and
vaporizing in presence of dielectric fluid. Performance measures are different for different
materials, process parameters as well as for dielectric fluids. Presence of metal partials in
dielectric fluid diverts its properties, which reduces the insulating strength of the dielectric fluid
and increases the spark gap between the tool and work piece. As a result, the process becomes
more stable and metal removal rate (MRR) and surface finish increases. The EDM process is
mainly used for making dies, moulds, parts of aerospace, automotive industry and surgical
components etc. This paper reviews the research trends in EDM process by using water and
powder mixed dielectric as dielectric fluid.
Cite this paper
S. Singh and A. Bhardwaj, "Review to EDM by Using Water and Powder-Mixed Dielectric Fluid," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 2, 2011, pp. 199-230. doi: 10.4236/jmmce.2011.102014.
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