|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies: An EPD Symposium in Honor of Professor Ramana G. Reddy
||Investigations on Rotary Tool Near-dry Electric Discharge Machining
||Vineet Kumar Yadav, Pradeep Kumar, Akshay Dvivedi
|On-Site Speaker (Planned)
Near-dry electric discharge machining (EDM) is a process variant of EDM, which uses two-phase flow of liquid and gas as dielectric medium. This article reports the results of an investigation pertaining to the drilling of holes on high speed steel (T2 grade) by a rotary tool near-dry EDM. The One-Factor-At-a-Time (OFAT) approach was used for experimentation. The effects of process parameters, viz. peak current, pulse duration, gas pressure, liquid flow rate, and tool rotation speed on material removal rate (MRR) and overcut were investigated. The dielectric medium used was a mixture of glycerin-air. The experimental results reveal that rotation of the tool electrode along with high pressure of two-phase dielectric medium contribute in effective flushing of inter electrode gap. The MRR measured with rotary tool near-dry EDM was three to four times higher in comparison with conventional EDM. Additionally, appreciable surface quality was achieved.
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