A critical review on different aspects of electric discharge machining

Abstract

EDM is a common manufacturing technique that separates the tool and the workpiece during the sparking process. This prevents the tool and the workpiece from contaminating each other. EDM requires a variety of tool and the components in order to determine the Metal Elimination Rate and the Tool Degradation Rate. The MRR and TWR were significantly altered as a direct result of the utilisation of a variety of dielectric fluids. The procedure parameters of EDM, which include current supplied, the voltage differential, process timely manner and blend off time etc., are the main variables that need to be analysed in order to determine MRR and TWR. This is true regardless of the distinct characteristics dielectric fluids that are being used. Several distinct optimisation strategies, including Taguchi, ANOVA, and TOPSIS, were utilised in order to optimise the processing parameter in such a way that it would result in a high MRR and a low TWR. In order to evaluate and optimise the data using MiniTab, an orthogonal matrix consisting of L9 and L27 elements is utilised. In the current article that is a review, the research studies that were conducted with various types of dielectric fluid, tools, and work pieces, as well as variable processing parameters and variable optimisation techniques, are identified and then described in detail.