Investigation and Optimization of EDM Milling and its Comparison with Die Sink EDM

Subject Areas : Mechanical Engineering

Mahmoud  Moradi ¹ (Department of Mechanical Engineering, Malayer University, Malayer, Iran)
Reza  AbbasiRad ² (Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran)
Majid  Ghoreishi ³ (Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran)
Hadi  Abdollahi ⁴ (Department of Mechanical Engineering, Urmia university of Technology, Urmia, Iran)
Majid  Rostami ⁵ (Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran)

Received: 2017-03-05 Accepted : 2017-05-07 Published : 2017-11-06

Keywords: response surface methodology, Electro discharge milling, Optimization, Die sink EDM,

Abstract :

In this study EDM milling process parameters of AISI H13, have been investigated by using Response Surface Methodology (RSM). Current (16-32A), pulse-on time (100-700 µs) and depth of cut (1-3mm) were considered as independent variables, while surface roughness, tool wear ratio (TWR), and material removal rate (MRR) as process output responses. Results reveal that increases in the current and decreases in pulse-on time cause more MRR and more TWR and depth of cutting has no significant effect on them. Minimum surface roughness, minimum TWR and maximum MRR were considered as optimization criteria. Verification experiments were carried out in order to analyze the results via software. Optimized settings were used for EDM Milling and die sink EDM experiments to compare the results. The results indicate that using EDM milling has considerable economic savings than die sink EDM, better surface roughness, and higher MRR.

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