Cellular Ceramics in Metal Filtration

In most molten metal processing operations, the acts of melting, transporting and alloying the metal in preparation for casting into desired shapes introduces undesirable non‐metallic inclusions to the melt. Molten metals are highly reactive and tend to interact with gases and refractories during pr...

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Bibliographic Details
Published in:Advanced engineering materials 2005-04, Vol.7 (4), p.187-192
Main Authors: Olson  III, R. A., Martins, L. C. B.
Format: Article
Language:English
Subjects:
Applied sciences
Casting
Cellular ceramics
Exact sciences and technology
Foundry engineering
Metal filtration
Metals. Metallurgy
Other casting methods. Solidification
Production techniques
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Summary:In most molten metal processing operations, the acts of melting, transporting and alloying the metal in preparation for casting into desired shapes introduces undesirable non‐metallic inclusions to the melt. Molten metals are highly reactive and tend to interact with gases and refractories during processing steps; undesirable phases are absorbed either as liquid or solid. Such examples of inclusion introduction are molten aluminum reacting with oxygen in air to form solid aluminum oxide, or molten cast iron reacting with oxygen in air to form liquid slag phases. In most molten metal processing operations, the acts of melting, transporting and alloying the metal in preparation for casting into desired shapes introduces undesirable non‐metallic inclusions to the melt. Thus, in order to efficiently cast defect‐free metal products, it is necessary to remove these non‐metallic inclusions from the melt, and one of the most effective methods of performing this task is through the use of ceramic foam filters.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.200500021