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Preheating first before usage: reheating 5min-10min on above of liquid level 100mmbefore immerging graphite rotor into aluminum fusant, avoid of effect to material from emergency cooling. And before immerging the rotor into liquid , gas must be put in, stop inputting gas after putting forward the rotor, in order to avoiding jam from air hole of rotor spray nozzle.
High Temperature Resistance Graphite Rotor
