Electric discharge machining

摘要

Electric discharge machining (EDM), often referred to as 'spark erosion', is a technique that uses high temperatures generated by electrical power for removing metal to produce a component, instead of employing a cutting tool on a lathe or milling machine (metalcutting). Although a number of niche and specialist uses for EDM have been developed, such as microdrilling of holes in diesel injector nozzles and other production applications, the mainstream use of the technology is still undoubtedly for the manufacture of moulds, tools and dies.