Abstract
ABSTRACTThe present article deals with fabrication of ultrasonic assisted jet electrochemical micro-drilling process setup, a special nozzle assembly to pass the ultrasonic vibrations in the electrolyte jet and a work-piece fixture. A detailed experimental study of the newly developed process has been carried out. Effects of process parameters like voltage, inter-electrode gap, electrolyte concentration, electrolyte pressure and pulse on time of ultrasonic vibrations have been studied on process responses, namely, MRR and hole taper. From the results obtained after experimentation, it was observed that MRR improved with an rise in pulse on time of ultrasonic vibrations whereas the hole taper decreased with the rise in pulse on time. It was concluded that combining ultrasonic vibrations with the Jet-ECMD resulted in an enhancement of the process capabilities in terms of improvement of MRR and reduction in the hole taper.
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