Abstract
The Baume test to control the dilution of refractory coatings adds variability to the % solids of the coating. Increasing the variability in the % solids translates to changes in the refractory dry deposit on the core’s surface and molds which ultimately results in an increased number of casting defects and changes to the dimensions of the casting. The foundry industry is in need of more progressive refractory coating measurement controls for reducing application variability. In this study, a set of standard test methods used to characterize the flow and leveling properties of paper coatings were used to characterize the properties of foundry coatings. The solids of the coatings were varied and the Baume number of each coating measured.
Several new testing techniques for the foundry industry has been identified through testing on a generic refractory coating that can be used on chemically bonded cores and molds.
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References
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TAPPI Test Methods, TAPP Press, Atlanta, GA
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Joyce, M., Rebros, M. & Ramrattan, S. Adapting More Progressive Refractory Coating Measurement Controls. Inter Metalcast 2, 29–39 (2008). https://doi.org/10.1007/BF03355434
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DOI: https://doi.org/10.1007/BF03355434