| 1. |
- Akbarnejad, Shahin, et al.
(författare)
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An investigation on permeability of ceramic foam filters (CFF)
- 2015
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Ingår i: TMS Light Metals. - Hoboken, NJ, USA : Wiley. - 9781119082446 ; , s. 949-954, s. 949-954
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Konferensbidrag (refereegranskat)abstract
- CFFs are used to filter liquid metal in the aluminum industry. CFFs are classified in grades or pores per inch (PPI), ranging from 10-100 PPI. Their properties vary in everything from pore and strut size to window size. CFFs of 80-100 PPI are generally not practical for use by industry, as priming of the filters by gravitational forces requires an excessive metal head. Recently, co-authors have invented a method to prime such filters using electromagnetic Lorentz forces, thus allowing filters to be primed with a low metal head. In the continuation of this research work, an improved experimental setup was developed in the present study to validate previous results and to measure the permeability of different filters, as well as a stack of filters. The study of permeability facilitates estimation of the required pressure drop to prime the filters and the head required to generate a given casting rate.
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| 2. |
- Fritzsch, R., et al.
(författare)
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Effect of electromagnetic fields on the priming of high grade Ceramic Foam Filters (CFF) with liquid aluminum
- 2015
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Ingår i: TMS Light Metals. - Hoboken, NJ, USA : The Minerals, Metals, and Materials Society. - 9781119082446 ; , s. 929-935, s. 929-935
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Konferensbidrag (refereegranskat)abstract
- Electromagnetic fields can influence the behavior of liquid metals in commercial Ceramic Foam Filters (CFF's). In the present study 9 inch industrial CFF's of high grade with 50 and 80 pores per inch (ppi) have been investigated. The main objective was to prime the 9 inch industrial scale CFF's with a standard aluminum casting alloy (3XXX - alloy) by the use of various magnetic field strengths (max. 0.12 T) induced by a coil. The obtained results were compared with reference gravity experiments. The influence of the electromagnetic Lorentz forces on the obtained results was calculated with 2D Finite Element Modeling (FEM) using the COMSOL® software. The fluid flow characteristics inside the CFF were considered and are part of another publication within the group.
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