The research methodology of continuous press-casting of metals

The paper examines a set of ways to combine continuous casting and pressing of aluminum alloys. They are Conform, Extrolling, Linex and combined rolling-pressing. The results show that the basic technological parameters of the combined process of casting and pressing of aluminum alloys with a rotary mold should include: finding rational cross-sectional dimensions of the container; determinining the angle of the input matrix; calculating the angle between the channel matrix and the longitudinal axis of the container; determining the length of the container; defining the place of metal pouring in the groove of the mold-wheel that depends on the temperature, pressing speed, cooling rate of the working tool during the stable process of deformation. To find the dependence of cooling on these factors, the regression equation was obtained. Based on theoretical calculations a set for combined molding and pressing of nonferrous metals was designed and constructed. Experiments were conducted to determine: the effect on the crystallization process of cooling and pressing of aluminum alloy; surface temperature of the wheel-mold groove and its cross-section area; casting metal temperature; matrix angle value and matrix position relative to the groove bottom of wheel feed, temperature, compression ratio and elongation ratio. The results show that combining continuous casting and pressing in one tool must provide constant temperature gradient for metal pouring into mold and matrix area where the workpiece is deformed. The temperature gradient depends on the nature of the temperature distribution along the transition zone of solid-liquid state of metal in the mold. It determines both power parameters of the deformation process and the quality of the product.