Optimization While EDM of 304-H Stainless Steel by Super Ranking Concept

In this research work tests are conducted on 304-H stainless steel by electrical discharge machining process. Taguchi’s L27 array is applied to conduct the experiments. Process factors chosen for the study are peak current (Ip), pulse on time (Ton), pulse off time (Toff) and tool lift time (TL) and the output characteristics are Material removal rate (MRR), surface unevenness (SR) and tool wear rate. The important process factors are analyzed by applying Taguchi based super ranking concept. The finest mixture of input course parameters started using Taguchi based super ranking concept are peak current 20 amp., pulse on time 60 μs, pulse off time 90 μs, and tool lift time 4 s.