Electrical discharge machining

Wire and sink erosion

Electrical discharge machining (EDM), also called electro-erosion, spark machining, wire erosion or sink erosion, is a manufacturing process by which material is removed from the work piece through electrical current. The process enables machining of hardened steel, tungsten and steel carbides. EDM therefore is widely applied for precision tooling and mold-making, while wire erosion is becoming an increasingly common method for prototyping and small series production.


Tooling, prototyping and small series

Precision machining

CGR produces tools, prototypes and small series by wire erosion and sink erosion. Our specialized EDM production units operate wire erosion and sink erosion machines, as well as fast hole drilling EDM. Materials include steel, aluminum, carbide, chrome cobalt, copper, graphite, Inconel, inox, titan and alloys. Wire diameters range from 0.07mm to 0.33mm. The main applications are prototyping and small series production for the aerospace and automotive industry as well as for electrical engineering.

EDM at work

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