材料期刊网

This work systematically researches the relationship between the binary basicity (CaO/SiO2), TiO2, Na2O, Li2O, MgO, MnO, B2O3 and viscosity in fluoride-free and titanium-bearing mold fluxes. The results of these experiments indicate that Li2O, B2O3 and Na2O play major roles in decreasing viscosity, especially Li2O, which is the most effective flux, while MgO and MnO exert little effect on viscosity. Meanwhile, the conclusion was also reached that, with increased TiO2 content, the viscosity of fluoride-free and titanium-bearing mold fluxes increases at first but then falls when the amount of TiO2 is greater than 6.0 wt%. Based on large amounts of experimental statistics of the viscosity of fluoride-free and titanium-bearing mold fluxes, a predictive model was built from the principles of the Weymann-Frenkel formula. This model can be used to predict the viscosity of fluoride-free and titanium-bearing mold fluxes. In fact, the predicted values approximate the observed values with a ±10.6% average deviation. Compared with the classical models, for which the average deviation is higher, we find that the new model can be applied to estimate the viscosity of fluoride-free and titanium-bearing mold fluxes.