The Use Temperature Range of Graphite Plate and Its Anti-oxidation Treatment
Nowadays, graphite sheets are very popular in the market, and there is a great demand for graphite sheets because of their high temperature resistance, good electrical conductivity, and alkali corrosion. So, what is the temperature range of graphite plates?
1. The use temperature range of graphite plate
The use temperature range of graphite plate: -200-650℃ (in air), -200-3000℃ (in non-oxidizing medium).
The structure of the heat-resistant graphite plate is an atomic crystal, and the carbon atoms are connected by a covalent single bond, resulting in a stable regular hexagonal porous structure. Because a covalent single bond is an ionic bond with high bond energy, it requires relatively high kinetic energy to be destroyed.
The general graphite plate has no problem in the following applications at 1200 °C, such as: high-precision parts processing, wire EDM, forging in the metallurgical industry, etc. Graphite plates with relatively good performance can withstand high temperatures above 3000 °C.
Because the graphite sheet is made of high-quality graphite carbon material, the porosity is effectively reduced, and the bulk density of the graphite sheet is increased, which is more conducive to high temperature resistance, corrosion resistance and wear resistance.
It should be noted that under normal circumstances, graphite sheets are easily oxidized in air at high temperatures above 500 °C, so it is recommended that you must add antioxidants during processing to increase the use time.
2. Anti-oxidation treatment of graphite plate prolongs service life
Graphite sheets are used in many industries, and due to their unique advantages, they will be more widely used in the future. Everyone is very concerned about the service life of the graphite plate, and the anti-oxidation treatment of the graphite plate can effectively prolong the service life.
After the graphite plate is produced and processed, it needs anti-oxidation treatment. Generally, antioxidants are used, which is an oily liquid.
The composition is high-temperature resistant nano-ceramic particles, and its anti-oxidation effect is very good in the oxidizing environment where the use temperature of the graphite plate is within 1300 ℃.
After various types of graphite sheets are impregnated with anti-oxidation protective agent, the liquid can penetrate into the pores of the graphite plate, and a layer of anti-oxidation protective film of about 0.02mm is formed on the surface of the pores and the graphite mold. It is this protective film. It can effectively isolate the air from directly contacting the graphite plate and the oxidation reaction occurs. Therefore, the oxidation of the graphite plate can be effectively resisted, and the service life of the graphite plate can be prolonged.
The service life of the graphite sheet has been continuously extended, and the service life of the traditional graphite sheet material has been significantly prolonged. It has been proved by numerous tests that the service life can even reach 30-50 years.
In this regard, it is still necessary to know the technical advantages and characteristics of it. After grasping the gap, it is still worthy of recognition when it is used in the industry.
Enhanced treatment and improved performance are also unique aspects of graphite sheets in the process of selling in the market. When promoting, you can basically see the advantages and characteristics of their materials.
After grasping the basic technical requirements and cost performance, we feel that the performance and processing requirements will continue to improve, and the choices brought to customers will be more and more satisfied.
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