from the conferences organized by TANGER Ltd.
Hydrogen in aluminum alloys is generally considered to be a predominantly adverse gas. It affects cleanliness, porosity and other mechanical and foundry properties. Therefore is an effort to eliminate this gas as much as possible. This study will focus on comparing the efficiency of commonly available refinery gases, namely nitrogen and argon. For the purpose of the research, one specific shape of the impeller or refining head will be chosen. The comparison of degassing efficiency will be evaluated using known tests that are commonly available in every non-ferrous metal foundry with a focus on aluminum alloys. The evaluation will be demonstrated by the Density Index, a comparison of the microstructures and a test to assess the amount of inclusions in the alloy called Drosstes.
Keywords: Degassing, aluminum, density index, microstructures, Drosstest© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.