• H.Geetha rao
• G.Phani Kumar Reddy
• H.Sravana lakshmi

EDM is a non-traditional machining process used for machining hard and difficult-to-machine materials. In this process, a pulse discharge occurs in a small gap between the working parts and electrodes, melting and evaporating unnecessary material from the metal. In EDM, electrodes and workpieces are not mechanically connected. Instead, thermal energy is generated through a series of controlled electrical discharges between the cathode (workpiece) and the anode (electrode) submerged in an insulating dielectric fluid. This process is commonly used in the mould and die-making industry, as well as in the manufacturing of automotive, aerospace, and surgical components. The objective of this work is to optimize the machining parameters for die sinking operation of EDM to achieve high material removal rate (MRR) and the best surface roughness (SR). Three materials, including high carbon steel, mild steel, and aluminum-6061, were used as workpieces, and a copper electrode of 10mm square-shaped tool was employed for experimentation. The input process parameters, such as discharge current (Ip), pulse on time (TON), and duty cycle, were varied to determine the output process parameters, including MRR and SR for each experimental run. The Taguchi L9 orthogonal array (OA) was implemented using the commercial tool Minitab to investigate the response to the variation of input parameters as an output with the minimum number of experimental runs. The Taguchi single-objective optimization method was used to study the effect of individual input and output parameters to optimize both input and output parameters. The results obtained from the above were used as inputs for the Grey Taguchi, a multi-objective optimization technique to determine the optimized cumulative parameters.

EDM, machining, carbon, steel, discharge, multi objective optimization

"COMPARISION AND MULTI OBJECTIVE OPTIMIZATION OF PROCESS PARAMETERS IN ELECTRIC DISCHARGE MACHINE WITH CARBON STEEL AND MILD STEEL BY GREY THAGUCHI METHOD USING MINITAB TOOL.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 8, page no.e823-e829, August-2023, Available :http://www.jetir.org/papers/JETIR2308495.pdf

"COMPARISION AND MULTI OBJECTIVE OPTIMIZATION OF PROCESS PARAMETERS IN ELECTRIC DISCHARGE MACHINE WITH CARBON STEEL AND MILD STEEL BY GREY THAGUCHI METHOD USING MINITAB TOOL.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 8, page no. ppe823-e829, August-2023, Available at : http://www.jetir.org/papers/JETIR2308495.pdf