High-density graphite components for aluminum degassing units. Superior resistance to molten metal, thermal shock and corrosion — precision machined to your drawings.
Graphite shafts and rotors are critical components in aluminum degassing systems. AL-LINX supplies these components manufactured from specialty graphite — valued for its high mechanical strength, excellent thermal resistance, low porosity and superior anti-abrasion properties.
Every component is machined strictly in accordance with customer drawings, with high concentricity tolerances to prevent mechanical vibration and premature wear. Special surface treatments are available including impregnation, proprietary carbon coating and partial strengthening.
During aluminum smelting, hydrogen dissolves in the molten metal through chemical reactions with atmospheric moisture. Excess hydrogen causes porosity defects in cast products. Degassing removes it before casting.
Nitrogen or argon gas is injected through the rotating graphite rotor-shaft system into the molten aluminum.
The rotor breaks the gas into fine bubbles, maximizing surface area contact with the melt.
Hydrogen atoms diffuse into the fine gas bubbles due to partial pressure differences.
Clean, low-hydrogen aluminum is ready for casting, producing parts with minimal porosity and superior mechanical properties.
Fills pores and seals the graphite surface to prevent gas and liquid penetration. Significantly extends service life and reduces operating costs.
Applied post-impregnation, our carbon coating provides an additional layer of heat and corrosion resistance — enhancing performance in the most aggressive environments.
Reinforcement applied to high-wear areas (rotor tips, shaft-rotor joints) to maximize lifespan cost-effectively without treating the entire component.
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