How to distinguish the advantages and disadvantages of graphite?
1. Shore Hardness
For most people's impression of graphite, graphite is generally thought to be a relatively soft material. But in the actual test data and application situation, the hardness of graphite is higher than that of metal. In the field of graphite, the general hardness test specification is the Shore hardness measurement method, the test principle and the metal test principle is different.
Due to the layered structure of the Graphite, it has a very superior cutting function in the cutting process. The cutting force is only about 1/3 of the copper material, and the appearance after machining is easy to handle. But because of its high hardness, in the cutting, the tool on the loss will be slightly larger than the cutting metal tool. At the same time, the hardness of the graphite in the discharge loss control is better.
2. The average particle diameter of the material
The uniform particle diameter of the material indirectly affects the discharge of the material. The smaller the uniformity of the material, the more average the discharge of the material, the more resolute the discharge, the better the appearance quality.
At the same time, the larger the particle size, the faster the discharge speed and the smaller the rough machining loss. The main reason is that the current intensity of the discharge process is different, which leads to the different discharge energy. However, the surface finish changes with the change of particles.
3.Flexural Strength of Material
The flexural strength of the material is an indirect representation of the intensity of the material, showing the rigorous level of the external structure of the material. High strength of the material, the discharge loss of the function is absolutely better, on the high precision electrode, try to choose a better strength of the material.