ESTIMATION OF MOLD POWDER CONSUMPTION IN CONTINUOUS-CASTING

The inflow phenomena of mold powder between mold and solidified shelf are very important for continuous casting opreation and quality of cas t products. In this experimental study, mold powder consumption was me asured with a apparatus called 'mold simulator' using several kinds of mold powders. Based on the results from the experiments, the followin g findings were obtained. Mold powder consumption, Q, was affected by the powder properties, powder viscosity, eta, crystallization temperat ure, T-cs, and also affected by the mold oscillation, amplitude, A, an d frequency, f, and casting speed, V-c, and deformation ratio beta of sinusoidal curve to non-sinusoidal. As the result, the next equation o f mold powder consumption was obatined. Q = k.beta/T(cs)(1.6)root eta A(0.4)/V-c cos(-1)(-1000Vc/2 pi fA) This equation can be used to fmd t he adequate operation conditions when the mold powder properties and t he amplitude of mold oscillation are changed.