Requirements for copper mould tube performance: Good thermal conductivity, condensation of liquid metal in the crystallizer, copper plate, copper tube work, the surface of the inner cavity is heated in the gradual condensation state of the liquid metal, and the back is heat transfer in the circulation of the cooling water. Achieve heat transfer, about 5%-20% of heat copper tube mold copper plate, tube for heat exchange, so generally made of copper or copper alloy with good thermal conductivity
Better high temperature strength, in the environment where the size is subject to severe heat exchange, the copper plate and the copper tube not only maintain good strength at normal temperature, but also maintain heat conduction at a temperature of 200-300 °C. , no recrystallization softening, no obvious plastic deformation, good mechanical properties
Good high temperature wear resistance, the liquid metal inside the crystallizer is condensed into a solid shell, which has a certain hardness. Under the action of the vibration device, it is removed at a speed of 0.4-0.6 m/s to cause friction with the surface of the copper tube copper tube. , wear, scratch, in order to maintain the shape and quality of the billet, it must have good wear resistance under high temperature conditions
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