Today, in the metal working industry, electrical discharge machining (EDM) is also known as spark machining, spark eroding, burning, die sinking, wire burning or wire erosion. It is a manufacturing process whereby a targeted shape is obtained by using electrical discharges which normally cause sparks, therefore in Chinese it is also called the sparking machining as the literal translation.
During the machining process of wire cutting EDM, unwanted materials of the work piece are removed from the work piece by a series of rapidly recurring current. Among the components, one of the electrodes is called the tool-electrode, and the other is called the work piece-electrode. The machining process is determined by the tool and work piece which would not make actual contact. Although there are several types of EDM processing nowadays and here in the section above we discuss one type about drilling which is largely adopted in the manufacturing of precision objects.
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