What are the advantages of graphite electrodes?
(1) The increasing complexity of mold geometry and the diversification of product applications have led to higher and higher requirements for discharge accuracy of spark machines. The advantages of graphite electrodes are easier processing, high removal rate of electrical discharge machining, and low graphite loss. Therefore, some group-based spark machine customers abandon copper electrodes and switch to graphite electrodes. In addition, some special-shaped electrodes cannot be made of copper, but graphite is easier to form, and copper electrodes are heavy and not suitable for processing large electrodes. These factors have caused some group-based spark machine customers to use graphite electrodes.
(2) Graphite electrodes are easier to process, and the processing speed is significantly faster than copper electrodes. For example, the use of milling technology to process graphite is 2 to 3 times faster than other metal processing and does not require additional manual processing, while copper electrodes require manual frustration. Similarly, if a high-speed graphite machining center is used to manufacture electrodes, the speed will be faster and the efficiency will be higher, and there will be no dust problems. In these processes, choosing tools with appropriate hardness and graphite can reduce tool wear and copper electrode damage. If you specifically compare the milling time of graphite electrodes and copper electrodes, graphite electrodes are 67% faster than copper electrodes. In general electrical discharge machining, processing with graphite electrodes is 58% faster than copper electrodes. In this way, processing time is greatly reduced, and manufacturing costs are also reduced.
(3) The design of the graphite electrode is different from that of the traditional copper electrode. Many mold factories usually have different allowances for roughing and finishing of copper electrodes, while graphite electrodes use almost the same allowances. This reduces the number of CAD/CAM and machine processing. For this reason alone, It is enough to greatly improve the accuracy of the mold cavity.