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International Journal of Advanced Engineering, Management and Science

Effect of Electrode Material and Geometry on EDM Performance for OHNS dies Steel

( Vol-2,Issue-6,June 2016 )

Author(s): Dr. Avinash Sarode, A.J.Parmar, Ujjawala Pandharkar, Snehal Junnarkar

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Page No: 787-791
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EDM, OHNS, Steel, Geometry.


Modern EDM machinery is capable of machining micro-hole, thin slots, geometrically complex or hard material components, that are precise and difficult to machine, such as heat treated tool steels, composites, super alloys, etc. The studies of an experimental investigation evaluate the effects of EDM machining parameters such as MRR, EWR and Surface Roughness with two different electrode materials. The process parameters such as Input current, Pulse on time and duty cycle keeping flushing pressure constant. The full factorial design of experiment (L25) is used to study the effects of machining parameters. Investigations indicate that the output parameters of EDM increases with the increase in input current and the best machining rates are achieved with copper with through hole electrodes, better surface roughness compare to brass electrode. A brass electrode with higher input current and maximum pulse on time resulted in more EWR compared to copper electrodes. Also the increase in MRR by copper electrode, it improves the SR during Electric Discharge Machining.

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