hp graphite electrodes
How to choose hp graphite electrodes correctly
As we all know, graphite has high-quality characteristics that other metal materials cannot replace. hp graphite electrodes are the first choice of materials, and there are often many confusing features in the actual material selection. There are many reasons for choosing hp graphite electrodes materials, but there are four main criteria:
For materials with the same average particle size, the strength and hardness of low-resistivity materials are slightly lower than those of high-resistivity materials. In other words, the discharge speed and loss are different. Therefore, the intrinsic resistivity of hp graphite electrodes is of great significance for practical applications. The choice of electrode material is directly related to the discharge effect. The choice of material largely determines the final situation of discharge speed, machining accuracy and surface roughness.
In the specialty graphite industry, the commonly used hardness test standard is the Shore hardness measurement method, and its test principle is different from that of metals. Although in our subconscious understanding of graphite, it is usually considered to be a relatively soft material. However, actual test data and applications show that the hardness of graphite is higher than that of metal materials. As graphite has a layered structure, it has excellent cutting performance during the cutting process. The cutting force is only about 1/3 of that of copper materials, and the machined surface is easy to handle.
However, due to its high hardness, the wear of the tool will be slightly greater than that of the metal tool. At the same time, high hardness materials have a good control effect on discharge loss. Therefore, the Shore hardness of hp graphite electrodes is also one of the criteria for selecting hp graphite electrodes.
The second is the bending strength of hp graphite electrodes. The bending strength of hp graphite electrodes is a direct manifestation of the strength of the material, which reflects the compactness of the internal structure of the material. For high-precision electrodes, materials with good strength should be selected as far as possible.
Finally, the average particle size of hp graphite electrodes directly affects the discharge performance of the material. The smaller the average particle size, the more uniform the discharge, the more stable the discharge conditions, and the better the surface quality. The larger the particle, the faster the discharge speed, and the smaller the roughing loss. The main reason is that the current intensity is different during the discharge process, resulting in different discharge energy. However, the surface finish will change as the particles change.
hp graphite electrodes are the materials of choice in the industry. It is precisely because of the impeccable advantages of hp graphite electrodes that the correct selection of hp graphite electrodes and the correct hp graphite electrodes are the key.