Parametric Study For Overcut Using EDM With Tool of Graphite, Copper & Silver

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Author Name :

Priyesh N. Santoki

Abstract :

The electrical discharge machining (EDM) is one of the latest non-traditional machining processes, based on thermoelectric energy between the workpiece and tool. In this machining process, the material is removed electrothermally by a series of successive discrete discharges between two electrically conductive materials (tool and workpiece). The performance of the process, to a large extent, depends on the tool material, workpiece material & manufacturing method of the tool. A suitable selection of tool can reduce the cost of machining. The performance of EDM is find out on the basis of Overcut (OC), Material Removal Rate (MRR), Tool Wear Rate (TWR) and Surface Roughness (SR). The important machining parameters of EDM which affecting on the performance parameters are discharge current, pulse on time, pulse off time, arc gap, flushing pressure, voltage and duty cycle.

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