Professional graphite electrode manufacturing mainly uses high-speed machine tools to process, machine tool stability is good, the three-axis movement should be uniform, stable and non-vibration, and such as spindle rotation accuracy should be as good as possible. General machine tools can also complete the processing of electrodes, but the process of writing tool paths is different from that of carbon electrodes.
2. EDM Discharge Machining
Graphite electrodes are carbon electrodes. Because graphite has good electrical conductivity, it can save a lot of time in EDM, which is one of the reasons why graphite is used as electrode.
3. Processing Characteristics of Graphite Electrode
The graphite used in industry is hard and brittle, and the tool wear is serious during C N C processing. It is generally recommended to use carbide or diamond coated tools. Graphite in rough processing tool can be directly in the workpiece top and bottom knives, finishing in order to avoid the occurrence of angle collapse, fragmentation, often use light knife fast way of processing. Generally speaking, graphite seldom breaks up when the cutting depth is less than 0.2 mm, and good sidewall surface quality can be obtained. Graphite electrode CNC processing produces a relatively large amount of dust, which may invade the guide screw and spindle of the machine tool, which requires the graphite processing machine tool to have the corresponding device to deal with graphite dust, machine tool sealing is also good, because graphite product is toxic.