Graphite rotor is a part of aluminum alloy smelting equipment. Hydrogen and oxidation slag will be produced in the aluminum alloy smelting process, which should be purified and removed by refining degasser. Graphite rotor is one of the indispensable accessories of refining degasser. The graphite rotor is composed of a rotor rods and nozzles.
It is mainly used in the purification process of liquid aluminum and aluminum alloy, and is the main means to improve the purity of aluminum and aluminum alloy. In the purification process, the method of mixing the purified gas and solvent and using the rotating graphite rotor to inject into the aluminum melt for purification treatment is the most advanced treatment method in the world.View more >
Graphite rotor plays a very important role in the steel-making and carbon brick industry. It is used for refining, slag removal, degassing, and blowing in the casting industry of aluminum, alloy, and zinc. Its main purpose is to produce refractory materials, including refractory brick, the crucible, continuous casting powder, mold core, mold, detergent, and high-temperature resistant materials.View more >
Take you to the graphite rotor
In graphite and carbon products, there is such a special application, that is graphite rotor. What is a graphite rotor? In the purification process, the main means to improve the comprehensive properties of aluminum alloy is to mix the purified gas and solvent and purify the liquid aluminum alloy.
Maybe many friends don't know about it. The graphite rotor rotating nozzle is made of high purity graphite. In addition to considering that bubbles should be dispersed, the structure of the nozzle also uses the centrifugal force generated by stirring the aluminum alloy melt to make the melt enter into the nozzle and mix with the gas ejected horizontally to form a gas / liquid jet, so as to increase the contact area and contact time between the bubble and the aluminum alloy liquid, improving the degassing purification effect.
In addition, the speed of the graphite rotor can be adjusted by frequency converter speed control. High purity anti-oxidation graphite rotor has the characteristics of high strength, high-temperature resistance, and aluminum flow corrosion resistance. In the process of purification and degassing, nitrogen is put into the surface of aluminum alloy liquid in the box for protection, so that the part of graphite rotor exposed to aluminum alloy liquid is in inert gas, so as to prevent high-temperature oxidation of the rotor and prolong the service life of the rotor.
Compared with other rotors, graphite rotor has obvious advantages. It is widely used in purifying molten aluminum in crucible furnaces, ladles, and static boxes. The surface of graphite rotor is treated with oxidation resistance and its service life is longer than that of ordinary products. Therefore, graphite rotor is widely used in the aluminum alloy casting industry.
As one of the most professional graphite rotor factories in China, Zhongtai is dedicated to providing a series of high-quality graphite rotor and the excellent services for customers. If you want to learn more about graphite rotors, welcome to contact us.
What are the reasons for the damage of graphite rotor?
In graphite and carbon products, there is a special application, that is graphite rotor, which will be damaged during operation. What are the reasons?
First of all, due to the influence of the transmission system, the transmission system of the degassing device is unstable, especially the connection between the rotors is different, and it will swing back and forth in the process of operation. In addition, it is easy to damage the friction between the graphite rotor and the sealing plug, which will accelerate the loss speed of the rotor.
Secondly, the composition of graphite is mainly composed of carbon, and the visible oxidation of graphite occurs under the air condition above 600 ℃. The products of carbon oxidation are CO and CO2 gas. In this way, the rotor cannot be protected, and the oxidation of the graphite rotor cannot be avoided.
Due to the cleaning of the liquid aluminum, the graphite rotor is immersed in the liquid aluminum in the degassing box, and after vigorous stirring, it can produce strong scouring and friction on the rotor. In particular, the contact part between the liquid level and the rotor rod gradually becomes thinner, and then it is damaged and scrapped.
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