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An Experimental Investigation on Optimization of EDM Process Parameters


Affiliations
1 Dept. of Mechanical Engg., Punjab Engg. College, Deemed University, Chandigarh, India
     

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In this paper, experimentally investigated results are utilized to establish the relationship between various input parameters of EDM, namely peak current (Ip), pulse on-time (Ton), duty Cycle (τ) and gap voltage (Vg), and machining characteristics e.g. surface finish, electrode wear rate and material removal rate. The experimentally investigated results were obtained during machining of OHNS die steel using 8 mm diameter of copper electrode on EDM. The Taguchi method, a powerful tool in the design of experiments is utilized to optimize the parametric combiriation of EDM for effective machining of OHNS die steel. AL18 (21 × 37) mixed orthogonal array is used for 34 factorial design, and analysis of variance is employed to investigate the influence of the EDM parameters on the surface finish, electrode wear rate and material removal rate. The mathematical models for different machinability criteria are developed to investigate the influence of cutting parameters during machining. Confirmation test results proved that the developed mathematical models are appropriate for machining of OHNS die steel by EDM.
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  • An Experimental Investigation on Optimization of EDM Process Parameters

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Authors

Alakesh Manna
Dept. of Mechanical Engg., Punjab Engg. College, Deemed University, Chandigarh, India
Samarth Chugh
Dept. of Mechanical Engg., Punjab Engg. College, Deemed University, Chandigarh, India

Abstract


In this paper, experimentally investigated results are utilized to establish the relationship between various input parameters of EDM, namely peak current (Ip), pulse on-time (Ton), duty Cycle (τ) and gap voltage (Vg), and machining characteristics e.g. surface finish, electrode wear rate and material removal rate. The experimentally investigated results were obtained during machining of OHNS die steel using 8 mm diameter of copper electrode on EDM. The Taguchi method, a powerful tool in the design of experiments is utilized to optimize the parametric combiriation of EDM for effective machining of OHNS die steel. AL18 (21 × 37) mixed orthogonal array is used for 34 factorial design, and analysis of variance is employed to investigate the influence of the EDM parameters on the surface finish, electrode wear rate and material removal rate. The mathematical models for different machinability criteria are developed to investigate the influence of cutting parameters during machining. Confirmation test results proved that the developed mathematical models are appropriate for machining of OHNS die steel by EDM.