Development of Production Regimes for Twin-Roll Casting of Metal Alloys

Physical and mathematical modelling have been used to study twin-roll casting of metal alloys. It has been found that overheated temperature, casting speed, and the melt level in the gap between rolls are the main production parameters that determine stability of twin-roll casting of metals. Equation of the form v = f (δ, β, R , Δ T ) has been derived that makes it possible to determine the optimal twin-roll casting speed for all examined alloys as a function of specified casting parameters: strip thickness, metal meniscus angle, roll radius, and melt overheat temperature. Experiments carried out using a laboratory setup for twin-roll casting of metals have shown good agreement of the regimes calculated for all the examined alloys with their actual values. Based on the good correlation between the calculated and laboratory results, a conclusion can be drawn that the proposed mathematical model provides a correct description of the actual process of twin-roll casting of metals.