Abstract：Casting of tail slab is an unsteady casting process， the tail slab of 400mm thick slab is often accompanied by quality defects such as surface transverse crack and central shrinkage cavity. This paper investigated the influence of cast speed and anhydrous capping process on quality of the tail slab. The results show that when the time of process with casting speed of tail slab v＜0.5 m/min is less than 5 min， the surface temperature of slab in straightening zone reach above 910 ℃. This can effectively reduce the surface transverse crack of the tail slab. If the end of the cast uses anhydrous capping process， the central shrinkage cavity of the tail slab can be elimited effectively. By taking measures， the amount of waste of tail slab has decreased from 242 tons per month to 30 tons per month， which was reduced by 87.9%. The length of the central shrinkage cavity of the tail slab was significantly shortened from 3.0-3.5 m to 1-2 m.
2019, Vol. 38 
