Viscosity measurement and prediction model of molten iron

Abstract

In order to explore effects of element content and temperature on the viscosity, viscosities of molten iron were precisely measured by the oscillating crucible method. The results obtained are summarised as follows: The viscosity of molten iron rises first and then decreases with the decreasing temperature; the viscosities before and after the turning point are the viscosity property and the solidification property, respectively. The temperature of the turning point decreases with the increasing carbon content. The viscosity increases with the increasing silicon and titanium content; on the contrary, the viscosity shows a downward trend with the increasing manganese, phosphorus, and sulphur content. The mechanism of various elements on the viscosity was analysed; the quantitative relationship between the viscosity and element content was obtained. The prediction model of the viscosity was established based on the co-existence principle; the calculation results of the model were in accordance with the measurement.