TRANSIENT THERMAL-MODEL OF THE CONTINUOUS SINGLE-WHEEL THIN-STRIP CASTING PROCESS

A transient heat-transfer model (STRIP 1D) has been developed to simul ate the single-roll continuous strip-casting process. The model predic ts temperature in the solidifying strip coupled with heat transfer in the rotating wheel, using an explicit finite difference procedure. The model has been calibrated using strip thickness data from a test east er at ARMCO Inc. (Middletown, OH) and verified with a range of other a vailable measurements, The strip/wheel interface contact resistance an d heat transfer were investigated in particular, and an empirical form ula to calculate this heat-transfer coefficient as a function of conta ct time was obtained. Wheel temperature and final strip thickness are investigated as a function of casting speed, liquid steel pool depth, superheat, coatings on the wheel hot surface? strip detachment point, wheel wall thickness, and wheel material.