Optimization of Wire EDM Process Parameters for Machining of AMCs (413/B4c) using Taguchi Technique

The effects of the machining parameters in Wire Electrical Discharge Machining (WEDM), by varying pulse on time, pulse off time, gap voltage and wire feed on the machining characteristics of fabricated Aluminium Matrix Composites (AMC- 413/B4C), using stir casting process were investigated. The experiments were conducted with the L27 orthogonal array, based on the Taguchi Technique. Analysis of variance (ANOVA) were done, to find the significance of machining parameters, which affects the quality characteristics of WEDM process and also, to find the relative contribution of machining parameters, in controlling the responses of the WEDM process. The optimal combination levels of machining parameters, for material removal rate and surface roughness were determined. The parameter with the strongest influence on the response is determined by signal to noise (S/N) ratio response analysis. However, as a final step, confirmation experiment has also been conducted with the optimum combination, to predict and verify the improvement of the observed values