Effects of BaO and B2O3 on the Absorption of Ti Inclusions for High Titanium Steel

In order to study the effect of BaO or B2O3 on the absorption of Ti inclusions, the effects of mold fluxes with different contents of BaO (0~15%) or B2O3 (0~15%) on the mass transfer coefficients of TiO2 or TiN were studied with the rotating cylinder method. The experimental results show that with the addition of BaO in the mold flux, the mass transfer coefficient of TiO2 increases from 4.58 &times
10&minus
4 m/s to 6.08 &times
4 m/s, that of TiN increases from 3.09 &times
4 m/s to 4.41 &times
4 m/s, 2CaO&middot
MgO&middot
2SiO2 is transformed into BaO&middot
2CaO&middot
2SiO2, and the Ti inclusions combine with CaO to form CaTiO3. With the addition of B2O3 in the mold flux, the mass transfer coefficient of TiO2 increases from 4.58 &times
4 m/s to 7.46 &times
4 m/s to 5.50 &times
4 m/s, CaO and B2O3 combine to 2CaO&middot
B2O3, and Ti inclusions exist in the form of TiO2. During the experiment, TiN will be transformed into titanium oxide.