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Electromagnetic priming of Ceramic Foam Filters (CFF) for liquid aluminum filtration
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Process Science.
2013 (English)In: TMS Light Met., 2013, no Light Metals 2013 - At the TMS 2013 Annual Meeting and Exhibition, 973-979 p.Conference paper (Refereed)
Abstract [en]

Commercial Ceramic Foam Filters (CFF) of 30, 50 and 80 Pores Per Inch (PPI) have been primed, using magnetic field strengths of 0.06-0.2T, for periods of 1-10 minutes. The influence of time and field strength on the gas removal from the CFF structure, and the resulting improvements in filter productivity, are discussed. The obtained results are related to Finite Element Modeling (FEM) of the metal flow fields induced by the electromagnetic Lorentz forces. Higher filtration rates were obtained for 50 PPI magnetically primed, than for 30 PPI gravity primed filters. This suggests that electromagnetic priming offers an opportunity to use 50 PPI filters, with a higher overall filtration efficiency than 30 PPI filters, in existing cast house applications where the low productivity/high priming head of these filters would otherwise rule them out. Estimated filtration efficiency of different filter types are presented as functions of velocity and thickness.

Place, publisher, year, edition, pages
2013. no Light Metals 2013 - At the TMS 2013 Annual Meeting and Exhibition, 973-979 p.
, TMS Light Metals, ISSN 0147-0809
Keyword [en]
Aluminum, CFF, Electromagnetism, Priming, Ceramic foam filters, Commercial ceramic foams, Filtration efficiency, Filtration rates, Finite element modeling, Magnetic field strengths, Exhibitions, Finite element method, Light metals, Liquid metals, Lorentz force, Metal casting
National Category
Metallurgy and Metallic Materials
URN: urn:nbn:se:kth:diva-134647ScopusID: 2-s2.0-84876048841ISBN: 9781118605721OAI: diva2:678413
Light Metals 2012 - TMS 2013 Annual Meeting and Exhibition, 3 March 2013 through 7 March 2013, San Antonio, TX

QC 20131212

Available from: 2013-12-12 Created: 2013-11-27 Last updated: 2013-12-12Bibliographically approved

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Aune, Ragnhild Elizabeth
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