| Abstrakt: |
Electrical Discharge Machining (EDM) is the process of removing metal from a workpiece by discharging a sequence of discrete sparks from a high current and voltage electrical arc. Using a sustainable electrical discharge machining (EDM) technique using vegetable based or conventional dielectric fluid, the objective of this work was to evaluate the material removal rate (MRR), and surface roughness (Ra) of Inconel 718 and electrode wear rate (EWR) of copper (Cu) electrode, respectively. To attain the same viscosity concentration as kerosene fluids, refined, bleached, and deodorized (RBD) palm oil was trans-esterified. In this study, the influence of peak current from 6A to 12A and Pulse duration from 50μs to 150μs on the machinability performance were investigated. Scanning Electron Microscope (SEM) was used to examine the surface topography of Inconel 718. The outcome demonstrates that for RBD palm oil, modified RBD, and kerosene dielectric fluid, the highest MRR, EWR and Ra were produced at the highest Ip=12A and ton=150s. When compared to kerosene at the same parameter settings, MRR for RBD palm oil and modified RBD as a dielectric fluid improved by about 49% and decreased by almost 9%. The lowest EWR and Ra, however, are produced by machining with RBD palm oil, modified RBD, and kerosene at Ip=6A and ton=150s. When compared to kerosene and modified RBD, the value of EWR and Ra for RBD palm is marginally greater. Overall, within selected parameters, RBD palm oil yields the greatest outcomes when EDM machining of Inconel 718. [ABSTRACT FROM AUTHOR] |
