About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Cast Shop Technology
|
Presentation Title |
Overview of the Possibilities and Limitations of the Characterization of Ceramic Foam Filters for Metal Melt Filtration |
Author(s) |
Claudia Voigt, Jana Hubálková, Are Bergin, Robert Fritzsch, Ragnhild Aune, Christos G. Aneziris |
On-Site Speaker (Planned) |
Claudia Voigt |
Abstract Scope |
The filtration of molten metal using ceramic foam filters (CFF) is a purification method often used in the aluminum industry to meet the increasing demands in regards to melt quality. CFFs are in most cases produced by the replica method using polyurethane foam scaffolds, which are coated with a ceramic slurry of specific composition before being sintered into its final structure. Despite the key role of CFFs in view of metal cleanliness, only a few quality parameters exist.
In the present study an overview of the different material properties of importance in regard to CFFs, their determination and limitations are presented. The properties covered are the density and the thermal expansion coefficient measured with the aid of dilatometer, as well as the filter porosity and microstructure through mercury intrusion porosimetry and computer tomography respectively. The Youngs Modulus, as well as the crushing- and bending strengths are also measured and discussed. |
Proceedings Inclusion? |
Planned: Light Metals |