Electrical discharge machining (EDM), also known as spark machining, spark eroding, burning, die sinking, wire burning or wire erosion, is a manufacturing process whereby a desired shape is obtained by using electrical discharges (sparks).

This spark generates a heat of about 10000 degree Celsius. And due to this heat the material from the workpiece starts to vaporize and melts. The spark generation inelectrical discharge machining is not continuous. As the voltage breaks, the dielectric fluid flushes away the molten materials leaving behind a crater

An electric discharge is the release and transmission of electricity in an appliedelectric field through a medium such as a gas.

To put it more simply, electrical discharge machining is a manufacturing process that precisely removes material from conductive materials using an electrode. … For this process, the electrode and the workpiece have to be submerged in a dielectric fluid.

Electrostatic discharge (ESD) is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown. A buildup of static electricity can be caused by tribocharging or by electrostatic induction.