The working principle of the electric discharge machine is to use the thin metal copper tube (called the wire) as the electrode and the metal forming process. And EDM wire cutting machine, forming machine, its electrical pulse electrode is hollow copper bar, across the medium from the rod hole in the middle of the pores, cooling and chip removal effect.

Between the metal electrode and the discharge to produce high temperature corrosion of metal to perforation for machining of super hard steel, hard alloy, copper, aluminum and any conductive material of pores. Small hole EDM machine minimum hole processing 0.015mm and processing with a taper hole, is widely used in precision mold processing, often referred to as the electric spark wire cutting machine tool equipment, used for electric spark line cutting through the screw hole, a chemical fiber spinneret, spinneret of spinneret hole, filter plate, plate hole group, engine blade, cylinder cooling hole, hydraulic and gas dynamic body oil, gas hole.