Review Study and Importance of Micro Electric Discharge

Abstract

Micro EDM process is one of the micro- machining processes. It can be used to machine micro features and makes a micro parts. There is a huge demand in the production of microstructures by a non-traditional method which known as Micro-EDM. Micro-EDM process is based on the thermoelectric energy between the work-piece and an electrode. Micro-EDM is a newly developed method to produce micro-parts which in the range of 50 μm -100 μm. Micro-EDM is an efficient machining process for the fabrication of a micro-metal hole with various advantages resulting from its characteristics of non-contact and thermal process. A pulse discharges occur in a small gap between the work piece and the electrode and at the same time removes the unwanted material from the parent metal through the process of melting and vaporization. This paper describes the importance, parameters, principle, difference between Macro and micro EDM, applications and advantages of µ-EDM and discuss about the literature reviews based on performance measure in micro- EDMP process.

Keywords: Micro EDM, MRR, TWR, SR