WEDM

EDM is a galvanic action between the use of erosion generated when immersed in the working fluid in the bipolar pulse discharge in addition to special processing method of a conductive material, also known as electrical discharge machining or etching process conducted EDM, the tool electrode and the workpiece are connected pulse power poles and immersed in the working fluid, or the fluid filling the discharge gap. Feed the workpiece through the gap automatic control system tool electrode, when the gap between the electrodes reaches a certain distance, the pulse voltage applied to the two electrodes working fluid breakdown, spark discharge. In the micro-channel discharge transient focus a lot of energy, the temperature can be as high as more than a million degrees Celsius, and a sharp change in pressure, so that the working surface trace of partial melting of metallic material at once, gasification, and the explosive splashes into the working fluid the rapid condensation, formation of metal particulate solids, was taken away by the working fluid. Then he left on the surface of a tiny pit marks, discharge brief pause, resume working fluid between two electrodes insulated.