Why choose graphite as electrodes：
(1) Faster processing speed Under normal circumstances, the machining speed of graphite can be 2~5 times faster than that of copper; and the electric discharge machining speed is 2~3 times faster than that of copper;
(2) The material is not easily deformed the softening point of copper is around 1000 degrees, which is easy to be deformed by heat; the sublimation temperature of graphite is 3650 degrees; the thermal expansion coefficient is only 130 of that of copper.
(2) Lighter weight The density of Graphite electrodes is only 15 of that of copper. When large scale electrodes are subjected to electric discharge machining, it can effectively reduce the burden on the machine tool; it is more suitable for the application of large-scale molds.
