graphite rotor within the aluminum melt at about 750 ℃, to speed 200 r/min to 400 r/min under the condition of continuous work, the service life of the general requirements for more than a month.My company graphite rotor is made of high purity graphite to graphite quality itself has a significant effect on the service life of the rotor, did oxidation protective coating in the surface at the same time, the service life can be extended to 50 to 60 days.
Second, the working principle of the graphite rotor
Graphite rotor consists of two parts, the rotor pole, nozzle.Transmission system drives the graphite rotor rotation, argon or nitrogen blowing into the aluminum melt through the rotor pole, nozzle.High-speed rotation of the graphite rotor scatter into aluminium melt argon or nitrogen formed many small bubbles, make its dispersed in the liquid metal, rotating the rotor at the same time also promotes the hydrogen in aluminum melt, the proliferation of inclusion, make contact with the air bubbles, bubbles in the melt by gas pressure difference and surface adsorption principle, absorb the hydrogen in the melt, adsorption oxidation slag, and be with bubble rising out of the surface of the melt, to purify the melt.
