Abstract
Ceramic foam filters are normally used for reducing the velocity of liquid metal in the design of runner systems. In this study, four designs of the runner system with various orientations of foam filters were explored, and their effect on the velocity of the melt was estimated by a casting experiment and computational modeling. In the casting experiment, the free-fall trajectory and metal weighing methods were employed for measuring apparent velocity and flow rate, respectively. Using Forchheimer’s equation, a porous material such as a foam filter was simulated. The modeling result was validated by the experiment. For the efficient use of a foam filter in a running system with a high flow rate but low exit velocity, an optimized design is recommended.
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Acknowledgments
F.-Y. Hsu acknowledges the help of Mr. Hsin-Wei Wang and Mr. Po-Sen Chen, as well as the sponsorship of Lien-Ho (LCTC) Foundation in Taiwan, Republic of China, with project no. 99-NUU-06.
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Manuscript submitted March 23, 2011.
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Hsu, FY., Lin, HJ. Foam Filters Used in Gravity Casting. Metall Mater Trans B 42, 1110–1117 (2011). https://doi.org/10.1007/s11663-011-9548-8
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DOI: https://doi.org/10.1007/s11663-011-9548-8