Water model experiments on surface flow fluctuation patterns in slab caster mold

Using the slab caster mold of a specific steelmaking plant as prototype a water model with 1∶1 scale is built up and effects of the processing parameters such as drawing speed,outlet angle and submerging depth of the submerged nozzle and structure of the bottom of the water gate on the inner flow field and surface fluctuation of the slab mould are studied on the basis of the instantaneous wave height and the processing parameters for optimizing the flow field of the mould are put forward so as to provide necessary guide for reduction of slag entrainment in the mould in the actual production.Results show that drawing speed is the greatest influential factor to the level fluctuation of the mould and inclination of the nozzle is the next.The influence of each and every processing parameter on the inner flow field of the mould is restricted with one another;and in accelerating the drawing speed the submerging depth of the nozzle has to be increased appropriately so as to avoid slag entrainment due to surface fluctuation.