Industrial graphite is hard and brittle, and it wears more severely to the tool during CNC machining. Generally, it is recommended to use carbide or diamond coated tools. When roughing graphite, the tool can be directly up and down on the workpiece. In order to avoid chipping and chipping during finishing, it is often processed with a light tool and fast walking. -Generally speaking, graphite seldom breaks when the cutting depth is less than 0.2mm. A better sidewall surface quality will be obtained. The dust generated during CNC machining of graphite electrodes is relatively large, which may invade the guide screw and spindle of the machine tool. This requires the graphite processing machine tool to have a corresponding device for processing graphite dust, and the machine tool must have good sealing performance, because graphite is poisonous.
The production of professional graphite electrodes is mainly processed by high-speed machine tools. The stability of the machine tools should be good, the three-axis movement should be uniform and stable without vibration, and the rotation accuracy of the spindle should be as good as possible. Graphite electrodes are carbon electrodes. Because graphite has good electrical conductivity, it can save a lot of time in electrical discharge machining, which is one of the reasons why graphite is used as an electrode.
1. The CNC machining speed is fast, the machinability is high, and the trimming is easy
2. Fast EDM forming, small thermal expansion, low loss
3. Lightweight and low cost
Used in electric arc steelmaking furnaces, submerged electric furnaces, resistance furnaces as conductive electrodes, a large number of graphite electrode blanks are also used to process various crucibles, graphite boats, hot die casting molds and vacuum electric furnace heating elements and other special-shaped products.
Graphite electrode is a kind of high temperature resistant graphite conductive material, which can be divided into: ordinary power graphite electrode (RP); high power graphite electrode (HP); quasi-super high power graphite electrode (SHP); ultra high power graphite electrode (UHP).