Analysis of Recast Layer, Wear Rate and Taper Angle in Micro-electrical Discharge Machining Over Ti–6Al–4V
In this paper, micro-electrical discharge machining of thin titanium alloy foil sheet (Ti–6Al–4V) is performed using 100-µm tungsten rod to study the output parameters such as recast layer thickness at entry and exit surfaces, material removal rate, linear wear rate and taper angle. The electrical input parameters considered in this research work are, namely, pulse on-time, current, pulse off-time and voltage. Further, SEM analysis reported is highly useful in calculating the output parameters originality for all input parameters combinations and additional value to the experimental observations. Grey relational analysis is employed to find the optimum machining parameter among the various combinations of electrical input parameters in micro-electrical discharge machining. The smaller hole is highly useful in fabrication of micro-products.
KeywordsTi–6Al–4V Electric discharge machining Regression analysis
The authors wish to thank the persons from College of Engineering, Anna University, Chennai, Tamil Nadu, India, for their contribution and Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai, Tamil Nadu, India, for their support and strong motivation.
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