The graphite rotor should be preheated for 5~10 minutes at about 100mm above the horizontal surface of the molten aluminum before being immersed in the molten aluminum to avoid the adverse effect of rapid cooling on the graphite rotor.

Before the graphite rotor is immersed in the liquid, we must pass through the gas first. When the graphite rotor is removed from the liquid level of molten aluminum, the gas supply can be stopped, which can prevent the air hole clogging of the graphite rotor nozzle.

The fire resistance of graphite itself makes graphite rotor play an important role in heavy industry production.

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