Studying fluidity effect of TiO2 and MnO in low fluorine mold powder of high speed steel continuous casting

Mold powders play an important role in process of steel continuous casting such as slab formation. The main tasks are oxidation protection، surface finish، heat loss control، fluidity between mold and solid surface. As an aim of this study some parts of fluorine، due to being poisonous، are replaced by TiO2 and MnO Portland cement clinker، free from sulfates is used، as main Constituent. Groove viscometer، XRD، SEM and EDX are used. Results indicated that by replacing CaF2 with TiO2 and MnO، similar fluidity to that of original powder can be obtained.