Graphite rotor consists of two parts: rotor rod and nozzle. The transmission system drives the graphite rotor to rotate, and argon or nitrogen gas is blown into the aluminum melt through the rotor rod and nozzle. The graphite rotor rotates at high speed and breaks up the argon or nitrogen gas entering the aluminum melt into many small bubbles, which are dispersed in the metal liquid. The rotating rotor also induces hydrogen and inclusions within the aluminum melt to diffuse and come into contact with the bubbles. Bubbles in the melt by gas partial pressure difference and surface adsorption principle, absorb hydrogen in the melt and adsorption of oxidized inclusions, with the bubbles rise and be taken out of the melt surface, so that the melt can be purified.
The rotating nozzle of the graphite rotor is made of high purity and high density graphite. The nozzle structure not only takes into account the dispersion of bubbles, but also the high purity antioxidant graphite rotor has the characteristics of high strength, high temperature resistance, and resistance to corrosion by aluminum flow. The surface of graphite rotor is treated with special antioxidant treatment, and its service life is about 5 times that of ordinary products, which is widely used in aluminum alloy casting industry.
Graphite Rotor Features
1. excellent antioxidant performance: graphite rotor has excellent antioxidant performance and scouring resistance, which can effectively reduce the erosion of aluminum liquid.
2. Reduce slagging phenomenon: the coating surface is not infiltrated with aluminum and aluminum alloy, which can reduce the slagging phenomenon of the rotor.
3. Extend the service life: reasonable operation can make the service life of graphite rotor extended.
Graphite rotor is widely used in the field of aluminum and aluminum alloy melting, which is one of the most advanced purification methods in the world. By rotating and blowing inert gas to remove hydrogen and oxidized inclusions in the melt, it ensures the purification effect of aluminum melt.
