Thermal analysis of a continuous casting tundish by an integrated fem code

摘要

This work describes a computational model named TEMREP, which determines the thermal states of a tundish and the liquid steel temperature during continuous casting, as a function of steel ladle teeming temperature evolution, heat losses to tundish refractory lining, and insulating coating during transient and steady states of the operating process. Solution of the thermal equations is performed via the finite element method. TEMREP predicted numerical values were compared with in plant experimental measurements, with good accordance between them. On average, steel tundish temperature difference was of about ±4oC. The model can be used as a design tool, by performing parametric studies to detect the relevant process variables. Since the computing time is much smaller than that of real process, the model is suitable of being implemented in an on-line system for tracking the steel temperature for automation control during the casting sequence.