Performance Optimization of Electrical Discharge Machining (Die Sinker) for Al-6061 via Taguchi Approach
Journal: Mehran University Research Journal of Engineering and Technology (Vol.34, No. 2)Publication Date: 2015-04-01
Authors : Saleem M.Q.; Khan A.R.; Mufti N.A.;
Page : 183-195
Keywords : Al-6061; Electrical Discharge Machining; Parametric Optimization; Taguchi's Method;
Abstract
This paper parametrically optimizes the EDM (Electrical Discharge Machining) process in die sinking mode for material removal rate, surface roughness and edge quality of aluminum alloy Al-6061. The effect of eight parameters namely discharge current, pulse on-time, pulse off-time, auxiliary current, working time, jump time distance, servo speed and work piece hardness are investigated. Taguchi's orthogonal array L18 is employed herein for experimentation. ANOVA (Analysis of Variance) with F-ratio criterion at 95% confidence level is used for identification of significant parameters whereas SNR (Signal to Noise Ratio) is used for determination of optimum levels. Optimization obtained for Al-6061 with parametric combination investigated herein is validated by the confirmation run.
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