7 research outputs found
Parametric Investigation and optimization of Near-Dry Electrical Discharge Machining
508-511This study
investigates near-dry Electric Discharge Machining (EDM) in order to achieve
higher Material Removal Rate (MRR), lower Tool Wear Rate (TWR) and Better
surface finish than conventional EDM on High Speed Steel (HSS) workpiece.
Taguchi L27 orthogonal array was used for conducting
experimentation. The experiments have been conducted by mixing of limited
quantities of water with high pressure air (air-mist). This paper presents a
relatively simple device to be used for applying the near-dry EDM. The near-dry
EDM does not produce toxic fumes so called Environment friendly machining
process for the applied operating conditions, the near-dry electrical discharge
machining presents some advantages regarding the machined surface quality and
the electrode tool wear, in comparison with the machining that uses liquid
dielectric. The effect of different process parameters like applied current,
duty factor, gap control, sensitivity, tool lift was analyzed on MRR, surface
finish and tool wear rate