1313 Evaluation of Surface Tension for Mold Fluxes containing Fluoride
DOI:
https://doi.org/10.17159/Abstract
The surface tension of mold flux is a key factor which affected the optimum casting conditions. Based on the ion and molecule coexistence theory of slag structure and the Butler’s equation, a thermodynamic model was developed for determining the surface tension of mold flux containing fluoride. The relationship between the composition and surface tension was investigated by the model. The results indicated that the calculated value showed good agreements with the literature data, and the average error was about 8.19%. The surface tension value of the CaO-Al2O3-based mold flux is larger than the value of the CaO-SiO2-based mold flux. The surface tension in multi-component system decreased with increasing the contents of SiO2, CaF2 and Na2O, which were considered as surface-active components. The decreasing trend is more significant in the CaO-Al2O3-based mold flux as well.Downloads
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Copyright (c) 2024 Ji-fang Xu, Peng-Wei Gu, Li-juan Su, Jie-yu Zhang
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