Graphite materials for EDM process
Fine-grained, isostatically pressed graphite materials are used for the production of electrodes used in the process of electrodrilling. Due to the specific properties of graphite such as:
high resistance to wearing out
possibility of producing electrodes in complicated shapes
graphite is an irreplaceable material for electrical discharge machining.
The advantage of graphite electrodes in comparison to copper ones is their lower wear, with simultaneous improvement in their efficiency and quality of the process. Graphite used as a positive electrode gets worn out much slower than an electrode made of copper. Copper electrodes have high heat conductivity, and what goes with it, when there are high electric amplifications they change some of the energy generating a flashover into a heat energy, what creates higher resistance, and electric arc becomes less stable. An electrode made of graphite can remove metal twice as fast in comparison to copper electrode.
In our offer we have materials of SGL Carbon company such as:
R8340 –used for coarse treatment
R8500 – universal sort
R8510 – for high requirements, resistant for wearing
R8650 – for a precise finishing work
R8710 – for special tasks, very high quality