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| Crystallization behavior of mold flux for high aluminum steel |
| LI Huan1,2, YANG Hong-gang1,2, ZHAI Jun1,2, ZHOU Le-jun3 |
1. State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan Iron and Steel(Group) Co., Ltd., Taiyuan 030003, Shanxi, China;
2. Technology Center,Shanxi Taiyuan Stainless Steel Co., Ltd., Taiyuan 030003, Shanxi, China;
3. School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China |
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Abstract Crystallization characteristic is one of the most important physical and chemical indexes of mold flux, which directly affects the surface quality of continuous casting billet and the running of continuous casting.The traditional low basicity CaO-SiO2 system and new CaO-Al2O3 system mold fluxes for high aluminum steel were used as research objects. The crystallization temperature, evolution process and micro morphology of liquid phase crystallization/glass phase crystallization of mold fluxes were studied by using SHTT technology and scanning electron microscope. The research results show that CaO-Al2O3 system is easier to crystallize during the liquid phase crystallization process, while CaO-SiO2 system is easier to crystallize during the glass phase crystallization process. The liquid phase crystallization speed of the two mold fluxes is faster, and there are also obvious differences in the growth mode and morphology of the liquid phase crystal and the glass phase crystal.
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Received: 06 January 2020
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2021, Vol. 40 
