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Surface characteristics analysis of dry EDMed AISI D2 steel using modified tool design
N. Pragadish,M. Pradeep Kumar 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.4
A modified tool design is proposed which helps in drilling holes without any central core, and also enables the effective removal of thedebris particles. Experiments were conducted on AISI D2 Steel using copper electrode as tool in both conventional EDM and dry EDMprocesses and the performance of both processes is compared. Experiments were designed using Taguchi’s L27 orthogonal array. Dischargecurrent (I), gap voltage (V), pulse on time (TON), gas pressure (P) and tool rotational speed (N) were chosen as the various inputparameters, and their effect on the material removal rate (MRR), surface roughness (SR), surface morphology, microstructure and elementalcomposition of the machined surface is analyzed. The experimental results show better surface characteristics in the surface machinedunder dry EDM process.