Abstract：The morphology, chemical composition, size and type of inclusions were investigated in H-beam steel with different deoxidation technology and the effect of Ti content on the inclusions precipitation was analyzed by thermodynamic calculation and laboratory experiment. On this basis, deoxidation process of Ti was practiced in the producing process of H-beam steel used in building in No.3 steelmaking and rolling plant of Maanshan Iron and Steel Co..The quality of products was compared with that under the existing technology. The results showed that the contents of dissolved oxygen and total oxygen in steel were relatively low, inclusions were small and was plastic, the reject rate of rolled products descend and the mechanical properties of products are enhanced.
2010, Vol. 45 
