Optimization Study on Submerged Nozzle Structure of 230 mm Thickness Section Slab Casting Mould
In order to improve the service life of submerged nozzles for the slab casting mould,the effects of three submerged nozzles including the regular one on the flow field inside the mould casting of the 230 mm thickness section slab are computed by CFD simulation,industrial tests are carried out also.The results show that the flow fields at the broad side of the mould corresponding to the nozzles type a,type b and type c are the top to bottom circulating flow forms symmetrically from left to right,the impact depths at the nozzles type b and c are higher than that of type a by val-ues from 11％to 16％.The liquid level velocities inside the nozzles type b and c corresponding moulds are both about 10％lower than that of type a.The service life of the nozzles b and c is 0.6 times higher than that of the nozzle type a.The nozzle type c corresponding re-judgement rate of inclusions is 27％lower than those of nozzles type a and b.With comprehensive consideration,the nozzle type c is of significantly improved service life and quality stability with impor-tant application prospects.
SlabMouldSubmerged nozzleFlow fieldIndustrial test
万方数据
维普
