High-purity graphite blocks are mainly used for graphite electrodes in the EDM industry
EDM graphite, also known as graphite for electrical discharge machining, is a material that is increasingly used in the mold processing industry. At present, in the developed European mold processing plants, more than 90% of the mold processing electrode materials are graphite. Copper, the once-dominant electrode material, has all but lost its advantages over graphite electrodes. Why is this so? Because graphite has great advantages as a discharge material for EDM, because spark oil also contains C atoms, during EDM, the high temperature causes the C atoms in the spark oil to be decomposed, thus forming a protective film on the surface of the EDM graphite electrode , compensating the loss of the graphite electrode, so the loss of the graphite electrode is very small, so the service life is long.