Abstract
Zircon is used in either the prime slurry and/or stucco in a majority of investment casting foundries. The current shortage in the supply of zircon, together with its rising price, means that many investment casting foundries will be forced to use alternate materials, or cut back on production. It would be of great benefit to the industry if functional alternatives to zircon could be identified and produced at comparable cost. This paper contains a baseline evaluation of a zircon prime slurry, including tests and quality metrics to quantify its behavior. Specifically, the following measurements were conducted on a set of six identical zircon prime slurries: viscosity, bulk density, pH, temperature, wet film thickness, prime coat bubble count, and plate retention. These quality metrics and other tests could be used to assess/benchmark potential zircon alternatives, and evaluate their performance compared to zircon.
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References
C. Whitehouse, J. Snow, B. Snyder, D. Scott, J. Wright, and R. Rosemait, “A Study on Prime Coats and Stucco Alternatives to Zircon,” 53rd Technical Conference & Expo 2005 (Investment Casting Institute, Montvale, NJ, 2005).
J. Snow and D. Scott, “Prime Slurries for Investment Casting,” 47th Annual Technical Meeting 1999 (Investment Casting Institute, Dallas, TX, 1999).
M. Guerra, Jr., “Reducing zircon Sand Usage,” 54th Technical Conference & Expo 2006 (Investment Casting Institute, Montvale, NJ, 2006).
J. D. Bundy and S. Viswanathan, Survey on the Use of Zircon and Zircon Alternatives (Investment Casting Institute, Montvale, NJ, August 2007)
M. Bijvoet, “Practical Ceramic Shell Slurry Preparation and Control,” 25th BICTA Conference on Investment Casting, 2001 (Cast Metals Federation, West Bromwich, UK, 2001).
G. Schiefelbein and M. Guerra, “Factors Effecting Slurry Rheology,” Remet Corporation Report, February 11, 1991.
J. C. Niles and A. T. Bozzo, “Ceramic Shell and Slurry Characterization,” 51st Technical Conference & Expo 2003 (Investment Casting Institute, Montvale, NJ, 2003).
M. Guerra and G. W. Schiefelbein, “Review of Shell Components, Shell Characteristics & Properties, Refractory Selection for Primary Shell Coat,” 42nd Annual Technical 1994 (Investment Casting Institute, Montvale, NJ, 2005), Paper No. 24.
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Bundy, J., Viswanathan, S. Characterization of Zircon-Based Slurries for Investment Casting. Inter Metalcast 3, 27–37 (2009). https://doi.org/10.1007/BF03355439
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DOI: https://doi.org/10.1007/BF03355439