Numerical Simulation and Application of Type Optimization on Tundish

Tundish type has an important influence on the steel fluid flow in tundish,and furtherly influences metallurgy effect of the tundish.By the evaluation criterion of the residence time of fluid in tundish,the tundish structure of a production plant was optimized by numerical simulation method.The results show that the volume fraction of piston flow region is increased from 39.3% to 69.6%,and the dead region is decreased from 10.11% to 4.77%,and the biggest denseness time of outlet is prolonged 200 s,and casting remnant decreases 3.5 t.The total quantity of macro-inclusion is decreased by 72.35%.The optimized tundish has been used stably in this steelmaking plant since Dec 2008.The result shows that metallurgy effect of the tundish is improved greatly and production cost is cut down and distinct benefit is created for the plant.