A brief introduction to the manufacturing process of high-power graphite electrodes

The manufacturing process of high-power graphite electrodes mainly includes the following steps:

Raw material preparation:
Select high-purity graphite raw materials, usually including natural graphite and artificial graphite.
Choose suitable binders, such as tar phenolic resin or asphalt.
Ingredients:
Mix graphite raw materials, binders, and other additives evenly according to the formula ratio.
Suppression:
Put the mixed raw materials into the mold for pressing to obtain the desired shape and size of the electrode semi-finished product.
Baking:
Bake the pressed electrode semi-finished product to remove moisture and volatile matter, and improve the strength and stability of the electrode.
Graphitization:
After calcination, the electrode undergoes high-temperature graphitization treatment, which rearranges the carbon atoms in the electrode, forming a highly ordered graphite structure, thereby improving the conductivity and thermal stability of the electrode.
Machining:
The graphite electrodes are machined to meet the final size and shape requirements.
Immersion:
In order to improve the density and conductivity of electrodes, it is usually necessary to impregnate them with tar or asphalt.
Re calcination and graphitization:
The impregnated electrode needs to be further roasted and graphitized to solidify the impregnated material and further improve the overall performance of the electrode.
Quality inspection:
The final electrode needs to undergo strict quality testing, including dimensional accuracy, density, electrical resistivity, bending strength, and other indicators.
The most critical steps in the entire manufacturing process are batching, pressing, roasting, graphitization, and impregnation, which directly affect the final performance of graphite electrodes. In addition, to ensure the quality of the electrodes, each step requires strict control of process parameters such as temperature, pressure, time, etc.