1993 Volume 79 Issue 12 Pages 1334-1337
The solubilities of MnS in MnO-SiO2-TiO2 melts have been investigated to clarify the mechanism of the formation of inclusions in steel during solidification by employing a chemical equilibration technique. A MnS pellet was equilibrated with MnO-SiO2 and MnO-SiO2-TiO2 melts between 1528 and 1723K. The solubility of MnS in MnO-SiO2 melts increases with increasing the ratio MnO/SiO2 and temperature. The influence of replacement of SiO2 by TiO2 on the MnS solubility of the MnO-SiO2-MnO-TiO2 system has also been investigated at 1623K. The solubility of MnS increases with increasing TiO2 content. Furthermore, the precipitation mechanism of oxysulfide inclusions during solidification of steel is discussed.
