Article Information
Performance Optimization of Electrical Discharge Machining (Die Sinker) for Al-6061 via Taguchi Approach

Keywords: Al-6061, Electrical Discharge Machining, Parametric Optimization, Taguchi’s Method

Mehran University Research Journal of Engineering & Technology

Volume 34 ,  Issue 2



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