Description Electrical discharge machine works by using the erosion caused by the impulse discharge between the electrode and the conductive material, which has been used in the production of dies.

Application 1. EDM machine is mainly used to produce the parts that have the complex shaped hole and cavity.
2. Machining all kinds of hard and brittle materials, such as cemented carbide and chilled hardened steel.
3. Dealing with long-deep holes, irregular holes, deep grooves, narrow slits and slices.
4. Producing many kinds of forming cutters, ring thread gauges and other cutting and measuring tools.

Working Process When machining, the work electrode and the work piece will be connected on the two poles of the pulse source respectively, and soak in the work oil. Through the discharge gap, the auto-control system will control the electrode feed the work piece, when the gap is tiny enough, the impulse voltage will breakdown the work oil in the gap, and cause the electric discharge spark.
The spark will etch the work piece, then the finished work piece which has the same shape corresponding the work electrode will be made/machined. So that the electrical discharge machine can machine different complex molded surfaces through changing the shape of electrode.
Work oil, as the discharge medium, also plays a role in cooling and chip cleaning. Commonly used work oil is the medium that has low viscosity, high flash point, and stable performance. Such as kerosene, deionized water, emulsions and so on.