Aluminum Degassing Graphite Transfer

The aluminum degassing graphite rotor (Graphite Degassing Rotor for Molten Aluminum) together with the matching graphite hollow shaft is the core consumable component of the rotary aluminum liquid refining equipment. By means of high-speed rotation, it shears argon / nitrogen into micron-sized bubbles, effectively removing dissolved hydrogen and alumina inclusions from the molten aluminum, and reducing the defect rates of pores and porosity in the castings.

Core working principle:
The hollow graphite shaft is filled with high-purity Ar/N₂ inert gas. The bottom impeller rotates at a speed of 300-700 r/min. The streamlined multi-blade structure generates strong centrifugal shear force, cutting large bubbles into micro-bubbles with diameters of 0.1-1 mm. During the process of the bubbles rising to the surface, they adsorb hydrogen gas from the molten aluminum and solid inclusions. The molten aluminum with hydrogen content is discharged to the surface, effectively controlling the hydrogen content in the molten aluminum to be within 0.12 ml/100g Al, significantly reducing the casting scrap rate.

Structural Special Optimization Design
Multi-diversion Built-in Airway: The internal of the impeller has multiple channels for uniform air discharge, without local air accumulation, ensuring uniform degassing of the molten aluminum;
Streamlined Arc-shaped Blades: The blades have no sharp corners, reducing the wear and erosion of the molten aluminum and lowering the risk of graphite debris contaminating the molten aluminum;
Thickened Root Strengthening Structure: The connection position between the impeller and the shaft is thickened and reinforced to resist high-temperature thermal shock and high-speed torsional stress, making it less likely to break;
Hollow Sealed Transmission Shaft: The inner wall of the airway is smooth and free of dust accumulation or blockage, suitable for long-term continuous 24-hour production.