Mathematical Modeling of Temperature Field in Continuous Casting Rolls for Design Optimization of Internal Cooling System

Numerical study of temperature of rotating continuous casting roll has been done using the computational fluid dynamics method. Radiation view factor for roll-slab configuration is analytically derived. Internal cooling effects of ring-gap roll and center-bored roll are compared and analyzed under normal operation condition and slab stoppage situations. Simulated results reveal a three-dimensional feature of the temperature field at roll ends, and indicate that for the ring-gap roll local boiling occurs most likely in end regions of the cooling channel. The developed calculation model, together with mechanical calculation, provides an optimizing tool for casting roll design.