Solidification and crystallization properties of CaO-SiO_2-Na_2O based mold fluxes  

作　　者：Sheng-ping He Qian Wang Dan Xie Chu-shao Xu Z.S. Li K.C. Mills 

机构地区：[1]Chongqing Key Laboratory of Metallurgical Engineering, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China [2]Department of Materials, Imperial College London, London SW72AZ, UK

出　　处：《International Journal of Minerals,Metallurgy and Materials》2009年第3期261-264,共4页矿物冶金与材料学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.50474023);the Natural Science Young Scholars Foundation of Chongqing University (No.2006c-02)

摘　　要：Crystallization properties play an important role in keeping a smooth running of continuous casting process and high surface quality of cast strands. To reduce fluorine pollution in slag, a new type of CaO-SiO2-Na2O （CSN） based mold flux was studied. The solidification and crystallization properties, including crystallization temperature, crystallization ratio and solidification mineragraphy, were measured, which were compared with the CaO-SiO2-CaF2 （GF） mold flux. The results show that the crystallization performance is equal to the high fluoride mold powder and CSN can be used for peritectic steel grades sensitive to longitudinal cracking in continuous casting.Crystallization properties play an important role in keeping a smooth running of continuous casting process and high surface quality of cast strands. To reduce fluorine pollution in slag, a new type of CaO-SiO2-Na2O （CSN） based mold flux was studied. The solidification and crystallization properties, including crystallization temperature, crystallization ratio and solidification mineragraphy, were measured, which were compared with the CaO-SiO2-CaF2 （GF） mold flux. The results show that the crystallization performance is equal to the high fluoride mold powder and CSN can be used for peritectic steel grades sensitive to longitudinal cracking in continuous casting.

关 键 词：mold fluxes crystallization properties mineragraphy peritectic steel 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TB383[一般工业技术—材料科学与工程]