Effect of CeO2 on heat transfer and crystallization behavior of rare earth alloy steel mold fluxes
来源期刊：International Journal of Minerals Metallurgy and Materials2019年第5期
论文作者：Ze-yun Cai Bo Song Long-fei Li Zhen Liu Xiao-kang Cui
文章页码：565 - 572
摘 要：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 10 wt% 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 8 wt% and 12 wt%, respectively. Therefore, these experimental results are beneficial to improve and develop the mold flux for casting rare earth alloy steels.
Ze-yun Cai，Bo Song，Long-fei Li，Zhen Liu，Xiao-kang Cui
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing
摘 要：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 10 wt% 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 8 wt% and 12 wt%, respectively. Therefore, these experimental results are beneficial to improve and develop the mold flux for casting rare earth alloy steels.
关键词：
