Graphite electrode, mainly with petroleum coke, needle coke as raw material, coal tar as binder, by calcination, batching, kneading, pressing type, roasting, graphitization, machining and made, is in the arc furnace with electric arc-like release of electrical energy to the burden of heating and melting of the conductor, according to its quality index, can be divided into ordinary power, high power and ultra-high power.
1: The increasing complexity of mold geometry and the diversification of product applications lead to higher discharge accuracy requirements for spark machines. The advantages of graphite electrodes are easy processing, high removal rate of discharge processing and small graphite loss, so some group base spark machine customers give up copper electrodes instead of graphite electrodes. In addition, some special shape of the electrode can not be made of copper, but graphite is easier to form, and copper electrode heavier, not suitable for processing large electrodes, these factors cause some group of base spark machine customers to apply graphite electrode.EDM Graphite Electrodes
2: Graphite electrode is easier to process, and the processing speed is significantly faster than the copper electrode. For example, using milling process to process graphite, its processing speed than other metal processing faster than $number times and do not need additional manual processing, and copper electrodes need manual grinding. Similarly, if the use of high-speed graphite processing center to manufacture electrodes, the speed will be faster and more efficient, will not produce dust problems. In these processes, the selection of suitable tools and graphite can reduce the wear and tear of the tool and the breakage of the copper. If the milling time of graphite electrode is compared with that of copper electrode, the graphite electrode is 67% faster than that of copper electrode, and the process of using graphite electrodes is 58% faster than that of copper electrode in normal discharge processing. As a result, processing time is greatly reduced and manufacturing costs are reduced.EDM Graphite Electrodes
3: The graphite electrode is different from the traditional copper electrode design. Many mold plants usually have different reserves in the roughing and finishing of copper electrodes, while graphite electrodes use almost the same amount of reserve, which reduces the number of CAD/CAM and machine processing, which alone is enough to improve the precision of the mold cavity to a large extent.EDM Graphite Electrodes