Wire electric discharge machining (WEDM) is an important technology, which demands high-speed cutting and high-precision machining to realize productivity and improved accuracy for automotive, manufacturing of press stamping dies, prototype parts etc. Manufacturing advances in Electrical discharge machining (EDM) wires have directly contributed to increased cutting speed and dimensional accuracy. Moreover, investigations of cutting performance with pulse on time, pulse off time, servo voltage, wire feed, current and cutting speed were experimentally investigated in WEDM process. Brass wire with 0.25mm diameter and Inconel 738 with 575 x 835 x 200 mm were used as tool and work materials in the experiments. The cutting performance outputs considered in this study are material removal rate (MRR) and surface roughness. Experimentation has been completed by using Taguchi's L16 orthogonal array under different conditions of parameters. Optimal combinations of parameters were obtained by this technique. This study shows that the complete problem can be solved with the minimum number of experiments when compared to full factorial design. The results obtained are analyzed for the selection of an optimal combination of WEDM parameters for proper machining of Inconel 738 to achieve better surface roughness and MRR
Article Details
Unique Paper ID: 156199
Publication Volume & Issue: Volume 9, Issue 2
Page(s): 1097 - 1104
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