Effect of CeO<sub>2</sub> on heat transfer and crystallization behavior of rare earth alloy steel mold fluxes

Ze-yun Cai; Bo Song; Long-fei Li; Zhen Liu; Xiao-kang Cui

doi:10.1007/s12613-019-1765-1

Volume 26 Issue 5

May 2019

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(5): 565-572

Ze-yun Cai, Bo Song, Long-fei Li, Zhen Liu, and Xiao-kang Cui, Effect of CeO₂ on heat transfer and crystallization behavior of rare earth alloy steel mold fluxes, Int. J. Miner. Metall. Mater., 26(2019), No. 5, pp. 565-572. https://doi.org/10.1007/s12613-019-1765-1

Cite this article as:

Ze-yun Cai, Bo Song, Long-fei Li, Zhen Liu, and Xiao-kang Cui, Effect of CeO2 on heat transfer and crystallization behavior of rare earth alloy steel mold fluxes, Int. J. Miner. Metall. Mater., 26(2019), No. 5, pp. 565-572. https://doi.org/10.1007/s12613-019-1765-1

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Research Article

Effect of CeO₂ on heat transfer and crystallization behavior of rare earth alloy steel mold fluxes

+ Author Affiliations

Corresponding author:
Bo Song E-mail: songbo@matall.ustb.edu.cn
Received: 26 September 2018; Revised: 24 November 2018; Accepted: 30 November 2018

Abstract

Abstract

To improve the heat transfer capability and the crystallization property of the traditional mold flux, CaF₂ was replaced with B₂O₃. Then, the influences of CeO₂ on the heat transfer and the crystallization of the CaF₂-bearing mold flux and the new mold flux with 10wt% B₂O₃ were studied using a slag film heat flux simulator and X-ray diffraction (XRD). The results revealed that the addition of CeO₂ reduced the heat transfer by increasing the solid slag thickness and the crystallization of two mold fluxes. However, CeO₂ had less effect on the B₂O₃-containing mold flux compared with the CaF₂-bearing mold flux. According to the analyses, the CeO₂ contents in the CaF₂-bearing mold flux and the B₂O₃-containing mold flux should not exceed 8wt% and 12wt%, respectively. Therefore, these experimental results are beneficial to improve and develop the mold flux for casting rare earth alloy steels.
- cerium oxide;
- boron trioxide;
- mold fluxes;
- heat transfer;
- crystallization;
- rare earth alloy steels

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