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Non Ferrous - Efficient hydrogen removal with pumping rotor designs

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Efficient hydrogen removal with pumping rotor designs

Molten aluminium is highly reactive and easily reduces water vapour to form aluminium oxide and hydrogen. The hydrogen then dissociates into its atomic form and then diffuses into the melt. This atomic hydrogen is readily taken into solution in the molten aluminium, however during solidification this results in a drastic reduction in solubility. The consequence of the hydrogen content in the melt being high is that the hydrogen becomes liberated during solidification to form very fine porosity throughout the casting. This porosity is not interconnected but will form points of weakness in the casting as well as becoming unsightly on machined surfaces. In this webinar we will show you how to reduce hydrogen efficiently with pumping rotors.