graphite electrode

Details:

(1) The increasing complexity of mold geometry and the diversification of product applications have led to higher requirements for the discharge accuracy of spark machines. The advantages of graphite electrodes are easy processing, high removal rate of discharge machining, and low graphite loss. Therefore, some group-based spark machine customers have abandoned copper electrodes and switched to graphite electrodes. In addition, some special-shaped electrodes cannot be made of copper, but graphite is easier to shape and copper electrodes are heavier, making them unsuitable for machining large electrodes. These factors have led to some group-based spark machine customers using graphite electrodes. (2) Graphite electrodes are easier to process and have a significantly faster processing speed than copper electrodes. For example, using milling technology to process graphite can achieve a processing speed of 2-3 times faster than other metals and does not require additional manual processing, while copper electrodes require manual grinding. Similarly, if high-speed graphite machining centers are used to manufacture electrodes, the speed will be faster, the efficiency will be higher, and there will be no dust problem. In these machining processes, selecting tools with appropriate hardness and graphite can reduce tool wear and copper electrode damage. If the milling time of the graphite electrode and the copper electrode is specifically compared, the graphite electrode is 67% faster than the copper electrode. In general, in discharge machining, using graphite electrodes is 58% faster than using copper electrodes. In this way, the processing time is significantly reduced, while also reducing manufacturing costs. (3) The design of graphite electrodes is different from that of traditional copper electrodes. Many mold factories usually have different reserve amounts for rough and precision machining of copper electrodes, while graphite electrodes use almost the same reserve amount, which reduces the frequency of CAD/CAM and machine processing. This alone is enough to greatly improve the accuracy of the mold cavity.