Abstract
In foundry practice and more specifically in sand casting, the filling and solidification processes depend on the thermophysical properties of the mould, such as thermal conductivity, thermal diffusivity and heat capacity. These properties depend strongly on the characteristics of the sand and are difficult to measure. In addition, numerical simulation in foundry, requiring the knowledge of these properties, in particular their variability in production, allows to predict casting defects and thus to avoid them, which makes it possible to reduce the percentage of reject. In order to understand the behaviour of foundry mould mixtures, a good knowledge of these properties is necessary. So in this study, a thermophysical characterization of two types of moulding sand was carried out using the transient hot bridge (THB) method: The green sand is used for the mould and the resin bonded sand is used for the core. The analysis of the variation of the thermal properties of the green sand has shown that these properties are very sensible of the variation of the density and the compression pressure. Comparing the two mixtures of sand, the green sand has higher thermal properties than the resin bonded sand because of the high quantity of the clay.
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This project is carried out under the MOBIDOC scheme, funded by the EU through the EMORI program and managed by the ANPR.
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Khalifa, D., Mzali, F. (2023). Thermophysical Characterization of Moulding Sands Using THB Method. In: Walha, L., et al. Design and Modeling of Mechanical Systems - V. CMSM 2021. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-14615-2_82
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DOI: https://doi.org/10.1007/978-3-031-14615-2_82
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