The current paper is studying several mechanisms for material removal at wire electrical discharge machining (W-EDM), with ultrasonic activated wire electrode. Vibrations with an ultrasonic frequency of the wire electrode have been transmitted to the working environment existent in the gap, influencing the performances of the W-EDM process. The study focuses on dielectric phenomena that go together with a singular electrical discharge initiated between electrodes; it is studied in different stages, as well: the priming of the electrical discharge, the electrical discharge evolution, the physicochemical effects into the gap, as well the material removal. We show that the ultrasonic energy transferred into the dielectric fluid from the gap intensifies the electro-erosive phenomena, beginning with the emergence of the gaseous phase and the initiation of the discharge channel and ending with the evacuation of erosion particles.
The International Journal of Advanced Manufacturing Technology – Springer Journals
Published: Feb 21, 2017
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