I believe many people are using itGraphite rotorThe process will always encounter the problem of short service life. What is the reason? In this regard, Xiaobian has made unremitting efforts to collect methods to increase the service life of graphite rotors. Next, I will teach you. We will learn from four aspects of operation:

First, preheating before use: the graphite rotor shall be preheated for 5min ~ 10min at about 100mm above the liquid surface before immersion in the aluminum liquid to avoid the impact of quenching on the material; The rotor must be filled with gas before being immersed in liquid; The air supply can only be stopped after the rotor raises the liquid level to prevent the air hole of the rotor nozzle from being blocked.

Second, isolate air: introduce nitrogen or argon into the purification box to ensure positive pressure in the box and isolate external air to prevent oxidation of graphite rotor.

Third, rotor immersion depth: the graphite rotor is immersed in the aluminum melt at a reasonable depth, so that the strengthening sleeve is exposed to the aluminum liquid surface by about 80mm and immersed below the liquid surface by about 60mm, which can effectively increase the antioxidant loss and scouring of the rotor.

Fourth, the transmission system is stable:Graphite rotorIt is connected with the transmission system through connecting rods (pipes). If the connecting rods are deformed under high temperature for a long time, or the relevant parts of the transmission equipment are loosened, the rotor's centering and running stability will be affected, and the graphite rotor will be easily broken or damaged by collision. Purity of argon or nitrogen: if the argon or nitrogen gas flowing into the aluminum melt is impure due to the leakage of pipes, joints and other components, the upper part of the rotor will be seriously oxidized, and even several rotor air holes at the lower part will be oxidized, which will greatly shorten the service life of the rotor. Therefore, the pre coated rotor is the most effective way to prolong the service life of the rotor.