Micro-Electro Discharge Machining of Holes and Grooves: AnAssessment of Process Parameters

Abstract

Abstract-The need for a better cooling purpose in bio medical, electronics, microprocessors and radars has attracted many researchers. Since, microchannels fulfil this objective it's machining through different micro machining techniques requires more skill and knowledge. Micro electrical discharge machining (EDM)is considered as one of the advanced methods of machining micro tools, dies, channels, grooves etc. More emphasis should be given to this machining process so that complicated geometries with least effort can be produced. In the present work critical study has been done on different tool materials as well as workpiece materials used on machining work table in micro EDM with different new strategies of machining will be helpful to enhance understanding of the subject. Along with this a direct method of getting tools for making micro holes and grooves on workpiece is suggested.

Microfeatures and microfabrication: current role of micro-electric discharge machining

“…An increase in discharge current leads to a direct increase in the discharge energy of the pulse. Several researchers have found that increasing the discharge current leads to an increase in overall MRR of the workpiece, however it also leads to an increase in the electrode wear rate (EWR) and overcut of the machined feature [71,77,78]. Higher discharge current also interferes with the shape of the machined geometric feature, i.e.…”