Graphite rotor wearing parts

1, preheating before use: graphite rotor in the aluminum immersed in the liquid before, in the liquid about 100mm above the surface of the preheating 5min ~ 10min, to avoid the impact of the rapid cooling of the material; rotor immersed in the liquid must be passed into the gas; rotor in the liquid surface before stopping the gas supply to prevent the rotor nozzle holes clogged.

2、Isolation of air: pass nitrogen or argon gas inside the purification chamber to ensure positive pressure inside the chamber and isolate the foreign air to prevent the graphite rotor oxidation.

3, rotor immersion depth: graphite rotor immersed in the aluminum melt at a reasonable depth, so that the reinforced sleeve exposed to the aluminum liquid surface of about 80mm, immersed in the liquid surface below about 60mm, which can effectively increase the rotor oxidation loss and scouring!

4, smooth transmission system: graphite rotor and transmission system is connected through the connecting rod (tube), connecting rod deformation occurs under the action of high temperature for a long time, or the transmission equipment related parts of the loosening, will affect the neutrality of the rotor and the smoothness of the operation, easy to make the graphite rotor fracture or bump damage. Argon or nitrogen gas to be pure: if the pipeline, joints and other parts of the leakage caused by the argon or nitrogen gas into the aluminum melt is not pure, it will make the upper part of the rotor is seriously oxidized, and even make the lower part of the several rotor jets are also oxidized, which will greatly shorten the service life of the rotor.