What is electrical discharge method?

Electrical Discharge Machining (EDM) is a machining technique through which the surface of a metal workpiece is formed by discharges occurring in the gap between the tool, which serves as an electrode, and the workpiece. The gap is flushed by the third interface element, the dielectric fluid.

What is electric discharge material?

Electrical discharge machining (EDM) is a non-traditional form of precision machining that uses thermal energy instead of mechanical force to remove material from a workpiece. It is sometimes referred to as Spark Machining since it utilises electrical sparks that are near 8000º C to 12000º C.

What is EDM in manufacturing?

EDM is a subtractive manufacturing method that uses electrical discharges to machine features on a mold. There are two distinct varieties of EDM, die-sink and wire cutting.

What are electric discharge examples?

Electric discharge is defined as the excitation of atomic states in a gaseous medium when an electric current passes through the medium. An example of electric discharge is fluorescent lamp.

What are the applications of electric discharge machining?

The EDM process is most widely used by the mold-making, tool, and die industries, but is becoming a common method of making prototype and production parts, especially in the aerospace, automobile and electronics industries in which production quantities are relatively low.

What is electric discharge grinding?

Electrical discharge grinding (EDG) is a non-traditional thermal process for machining hard and brittle electrically conductive materials. EDG has been developed by replacing the stationary electrode used in electrical discharge machining (EDM) with rotating electrode [1-3].

Why does electric discharge occur?

Electric discharge in gases occurs when electric current flows through a gaseous medium due to ionization of the gas. Depending on several factors, the discharge may radiate visible light.

Who discovered electric discharge?

In the late 1830s, Michael Faraday’s experiments on electrical discharge in attenuated gases gave a new prominence to the subject. Over several decades these discoveries served to stimulate critical investigations at home and on the Continent, notably in Germany.