Do you know the Excellent Performance of Graphite Electrode High Temperature Anti-Oxidation Coating?

Aug. 20, 2020

As a Graphite Electrodes Solutions Supplier, share with you. The working temperature of the graphite electrode can reach 1400℃. At such high temperature, the graphite electrode, the insulating brick lining, the insulation material, such as cotton, the oxidative aging of the very high temperature, the shortening material, the heat The insulation effect decreases, and the safety index of graphite electrodes drops sharply. Graphite block is a kind of artificial graphite, and artificial graphite is made by artificial heating of coke products. Generally, if it is purified to make high-purity or carbon fiber, the added value is high. Graphite rods are often used as electric heating elements in high-temperature vacuum furnaces. The maximum operating temperature can reach 3000℃. It is easy to oxidize at high temperatures. Except for vacuum, it can only be used in a neutral or reducing atmosphere.

Graphite Electrodes

Graphite Electrodes

Its thermal expansion coefficient is small, thermal conductivity is large, resistivity is (8~13)×10-6 Ω·m, processability is better than SiC, MoSi2 rod, high temperature resistance, extreme cold and extreme heat resistance, good price Cheaper. Graphite electrodes are mainly made of petroleum coke and needle coke as raw materials, coal tar pitch as a binder, and are made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It releases electric energy in the form of electric arc in an electric arc furnace. The conductors used for heating and melting the charge can be classified into ordinary power, high power and ultra-high power according to their quality indicators. Graphite electrodes mainly include four types of ordinary power graphite electrodes, anti-oxidation coating graphite electrodes, high power graphite electrodes and ultra-high power graphite electrodes.

Graphite anode plates oxidize and corrode relatively quickly in high-temperature working environments. High-temperature oxidation of graphite anode plates refers to the development of chemical research reactions between graphite anode plates and oxygen or oxygen-containing substance cultures such as water vapor, CO2, SO2, etc. in high-temperature gas phase environment analysis. It is transformed into graphite anode plate oxide. The graphite anode plate oxide has been separated from the graphite anode plate and cannot fail to form a whole enterprise. In the University of Petroleum, chemical engineering, energy, power, metallurgy, aerospace and other fields are generally believed to have some major high-temperature corrosion problems. The high temperature corrosion oxidation technology of graphite anode plate will affect the embrittlement layer of graphite anode plate, and graphite anode plate indicators such as hardness, strength and toughness will continue to drop to a large extent, which can easily lead to major safety production accidents such as information explosion.

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