Study on the Stability of Inclusion Adsorption on Refractory Wall

The interaction between inclusion and refractory wall and the stability of inclusion in the continuous casting nozzle had been studied,and the inclusion adhering model had been developed. Analysis results show that when the inclusions are attached to the refractory wall,the inclusions exert positive adsorption force from refractory wall.The force on the parallel wall direction is mainly related to the inclusion radius,which increases with the radius of inclusions.The force of the inclusions on vertical wall direction increases with the inclusion of radius and wetting angle. The stability of the wall inclusions decreases as radius of inclusions increase.When the radius of the inclusions is greater than 4 μm,the adhesion stability of different inclusions change,and the inclusions stability from high to low level are Al₂O₃＞TiN ＞MgO ＞SiO₂.When the inclusions are attached to the inclusions bottom of the refractory wall,the force of inclusions on the vertical wall direction decreases slowly with the increase of the roughness,and increases with the size of inclusions.