Abstract
Abstract Near dry and dry electric discharge machining process are non-conventional machining processes which are considered as some of the best options for electric discharge machining (EDM) process by changing the dielectric fluid. These are used for machining of hard materials and intrinsic parts. In this paper comparison of near dry (NDEDM) and dry EDM processes are based on machining performance of spring steel material by drilling operation is shown by using Copper as an electrode. Machining performance is checked by measuring the material removal rate (MRR), Tool wear rate (TWR), and surface topography. Experimentation is performed by using the Taguchi method for Design of experiment (DOE) with the help of L9 array.SEM images are used to comment on surface topography of machined parts. Near dry EDM (NDEDM) machining method shows good performance in increasing MRR, lower TWR and better surface topography over dry EDM process.
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