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

被引：6

作者：

Cai, Ze-yun ^{[1
]}

Song, Bo ^{[1
]}

Li, Long-fei ^{[1
]}

Liu, Zhen ^{[1
]}

Cui, Xiao-kang ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2019年 / 26卷 / 05期

基金：

中国国家自然科学基金;

关键词：

cerium oxide; boron trioxide; mold fluxes; heat transfer; crystallization; rare earth alloy steels; VISCOSITY; MICROSTRUCTURE; SOLIDIFICATION; LUBRICATION; BASICITY; B2O3; RE;

D O I：

10.1007/s12613-019-1765-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

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 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.

引用

页码：565 / 572

页数：8

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