Abstract
Melt cleanliness is essential for high quality aluminum production. The main cleanliness criteria are the content of dissolved hydrogen as well as the content of non-metallic inclusions. The latter may impair the castability of the aluminum melt as well as the mechanical properties and the machinability of the aluminum castings. A simple and efficient way to remove non-metallic inclusions is the application of filters during the casting process. The influence of the filter roughness on the filtration is undisputed but experimental proof is still pending. Filters with three different levels of roughness were subjected in filtration trials in a filtration pilot setup at Hydro (Bonn, Germany) allowing determination of the inclusion removal efficiency by the application of two LiMCA devices. In addition to the LiMCA measurements, PoDFA, Alscan measurements and investigations of the casted aluminum were done.
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Acknowledgements
The authors would like to thank the German Research Foundation (DFG) for supporting these investigations in terms of the Collaborative Research Centre 920 “Multi-Functional Filters for Metal Melt Filtration—A Contribution towards Zero Defect Materials.” subprojects A02 and S03. The authors also would like to acknowledge the support of J. Hubálková, G. Schmidt, B. Fankhänel and S. Ostmann as well as for technical assistance of R. Schmoll and D. Krings.
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© 2019 The Minerals, Metals & Materials Society
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Voigt, C., Dietrich, B., Badowski, M., Gorshunova, M., Wolf, G., Aneziris, C.G. (2019). Impact of the Filter Roughness on the Filtration Efficiency for Aluminum Melt Filtration. In: Chesonis, C. (eds) Light Metals 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05864-7_130
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DOI: https://doi.org/10.1007/978-3-030-05864-7_130
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