Graphite electrodes material are characterized by superior compact structure, good electrical and thermal conductivity, high resistance to oxidation and corrosion in high temperature. The regular power graphite electrodes graphite electrodes for heavy industrial arc furnaces, steel mills, foundries, and other applications.
There are a lot of selection criteria for graphite electrode material, but the main selection criteria are four.
1.Average particle diameter of graphite electrode materials
Average particle diameter of graphite electrode materials Direct influence on the discharge of materials。The smaller the average particle size of the graphite electrode material, the more uniform the discharge of the material, the more stable the discharge, the better the quality of the surface.。For the surface machining accuracy of the casting die casting die, recommend the use of coarse particles of material， For the higher accuracy of the processing of the electronic mold, recommended the use of smaller particles of the material, in order to ensure the accuracy of the processing mold, surface finish。The smaller the average particle size, the smaller the loss of the material in the process.。
2.Flexural strength of graphite electrode materials
The flexural strength of the graphite electrode material is the direct embodiment of the material strength. Show close degree of internal structure
3.Shore hardness of graphite electrode materials
In the subconscious of the general people, graphite is considered to be a kind of strength of the material, but in the actual measurement data and application show that the strength of graphite, higher than the metal material。
4.Intrinsic resistivity of graphite electrode materials
If the average particle size of the graphite electrode material is the same, the resistivity of the electrode material is slower than the resistivity of the material. For the same average particle size of the electrode material, the resistivity of the material, its strength and hardness will be corresponding to the resistivity of the graphite electrode material. Discharge speed, loss will be different, so according to the actual application of the need to choose the appropriate material is very important.
These four kinds of data represent the main discharge performance of the material, and directly determine the performance of the material.