Performance of electrical discharge machining using aluminium powder suspended distilled water

Authors : Khalid Hussain SYED, Kuppan PALANIYANDI

Pages : 195-207

View : 16 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This paper presents the experimental investigations on addition of aluminium metal powder to dielectric fluid in electric discharge machining insert ignore into journalissuearticles values(EDM);. As more emphasis is given nowadays to the green manufacturing concept, the present investigation uses distilled water mixed with aluminium powder as dielectric fluid instead of conventional hydrocarbon-based oils. The workpiece and electrode materials chosen for the investigation are W300 die-steel and electrolytic copper, respectively. Taguchi design of experiments is used to conduct experiments by varying the parameters peak current, pulse on-time, concentration of the powder, and polarity. The process performance is measured in terms of material removal rate insert ignore into journalissuearticles values(MRR);, electrode wear ratio insert ignore into journalissuearticles values(EWR);, average surface roughness insert ignore into journalissuearticles values(Ra);, and white layer thickness insert ignore into journalissuearticles values(WLT);. The experimental results indicate that the polarity significantly affects the machining performance. Signal-to-noise insert ignore into journalissuearticles values(S/N); ratio and the analysis of variance insert ignore into journalissuearticles values(ANOVA); are employed to find the optimal levels for the process parameters to achieve maximum MRR, low EWR, Ra, and WLT values.
Keywords : Aluminium powder, die steel, distilled water, powder mixed EDM, Taguchi method