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Metals 2017, 7(5), 166; doi:10.3390/met7050166

Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600

Mechanical, Energetics and Materials Engineering Department, Public University of Navarre, Campus de Arrosadía, s/n, 31006 Pamplona, Spain
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Academic Editor: Tilmann Beck
Received: 5 April 2017 / Revised: 28 April 2017 / Accepted: 3 May 2017 / Published: 11 May 2017
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Abstract

In this present research work, a new modelling of energy density in EDM (Electrical Discharge Machining) is proposed. Energy density can be defined as the amount of energy needed to get a unit volume of material removed, and for its modelling, the whole EDM process has been taken into account. This new definition lets us quantify the energy density that is being absorbed by the workpiece and the electrode. Results are compared to those obtained by die sinking EDM in an Inconel ®600 alloy using Cu-C electrodes. Currently, this material is of great interest for industrial applications in the nuclear, aeronautical and chemical sectors, due to their combinations of good mechanical properties, corrosion resistance and extreme hardness at very high temperatures. The experimental results confirm that the use of negative polarity leads to a higher material removal rate, higher electrode wear and higher surface roughness. Moreover, the optimal condition to obtain a maximum MRR (Material Removal Rate) of 30.49 mm3/min was: 8 A, 100 µs and 0.6, respectively, for the current intensity, pulse time and duty cycle. View Full-Text
Keywords: modelling; EDM; MRR; roughness; wear modelling; EDM; MRR; roughness; wear
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MDPI and ACS Style

Salcedo, A.T.; Arbizu, I.P.; Pérez, C.J.L. Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600. Metals 2017, 7, 166.

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