Modelling of surface finish,electrode wear and material removal rate in electrical discharge machining of hard-to-machine alloys |
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| Affiliation: | 1. Department of Mechanical EngineeringJSS Academy of Technical Education, Noida, 201301, India;2. Department of Mechanical Engineering, Institute of Engineering &Technology, GLA University, Mathura 281406, India;3. Department of Mechanical Engineering, Indian School of Mines, Dhanbad 826004, India;1. Faculty of Mechanical Engineering, MBITS, Nellimattom 686693, India;2. Department of Mechanical Engineering, MBITS, Nellimattom 686693, India;1. Department of Mechanical Engineering, B.I.E.T. Jhansi-284128, India;2. Department of Mechanical Engineering, B.I.E.T. Jhansi-284128, India |
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| Abstract: | Hard-to-machine alloys are commonly used for industrial applications in the aeronautical, nuclear and automotive sectors, where the materials must have excellent resistance to corrosion and oxidation, high temperature resistance and high mechanical strength. In this present study the influence of different parameters of the electrical discharge machining process on surface roughness, electrode wear and material removal rate have been studied. Regression techniques are employed to model arithmetic mean deviation Ra (μm), peak count Pc (1/cm), material removal rate MRR (mm3/min) and electrode wear EW (%). All these parameters have been studied in terms of current intensity supplied by the generator of the electrical discharge machine I (A), pulse time ti (μs), duty cycle η and open-circuit voltage U (V). This modelling allows us to obtain mathematical data and models to predict that the most influential factor in MRR and Ra is the current intensity and in the case of EW and Pc is the pulse time. |
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| Keywords: | Electrical discharge machining (EDM) Roughness Material removal rate (MRR) Electrode wear (EW) |
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