Graphite is a very easy-to-cut material, but the graphite product used as EDM electrode must have enough strength to avoid damage during operation and EDM processing. At the same time, the shape of the electrode (thin wall, small rounded corner, sharp change) also puts forward higher requirements for the grain size and strength of the graphite electrode, which results in the graphite workpiece easy to crumble and tool easy in the process of processing. Wear and tear. Therefore, how to prevent the workpiece from breaking up, improve the surface quality and reduce the cost of cutting tools has become an important issue in graphite electrode processing.
Generally, conventional turning, milling and grinding methods are used to process graphite electrode joints to meet the demand for simple shape electrodes. However, in recent years, the requirement for the complexity of electrode geometry continues to increase. High-speed machining surface quality and high processing accuracy make the high-speed processing of graphite electrodes become a hot spot in EDM processing of dies. Many manufacturers have introduced graphite high-speed machining centers.
Ink electrode is easy to process, and the processing speed is obviously faster than copper electrode. For example, the processing speed of graphite by milling is 2–3 times faster than that of other metals, and no additional manual treatment is needed, while the copper electrode needs manual grinding. Similarly, if graphite electrode manufacturers use high-speed graphite processing centers to manufacture electrodes, the speed will be faster, the efficiency will be higher, and there will be no dust problem.