Electrical Discharge Machining or EDM is electrical equipment or a machining method that is used for hard metallic materials. It is primarily used on hard metals that cannot be processed by traditional methods and techniques. Electrical Discharge Machining, however, only works with metallic objects that are electrically conductive. EDM can cut small unusual shaped angles, complex curves and outlines in numerous types of extremely hard steels and exotic metals like titanium and carbide just to name a few.
1. How It Works
Sometime referred to as spark machining or spark eroding. Electrical discharge machining is a method of removing material by a series of rapidly recurring electric discharges between the cutting tool and the work piece, in the presence of an energetic electrical field. The EDM equipment is guided very close along the desired path but it does not touch the metallic piece. Instead the sparks produce a series of micro-crates on the metallic piece and remove materials along the desired path by melting and vaporizing them. The wasted particles then are washed away by the continuous flushing of dielectric fluid.
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