During steel solidifying, there might be an air gap between the steel strand and the mould inside wall, which will reduce the thermal conduction of steel. In order to minimize the formation of such air gap, the taper of mould should be properly designed to follow the shrinkage curve to the maximum extent. Thus, different taper designs have been provided, such as single, double, triple or multi-taper or parabolic taper depending on factors such as steel grade, casting speed, cooling condition etc.
RICH CHROME PLATING
Chrome plating is furnished to the inside wall of copper mould tube so as to increase the wear resistance and improve the service life of the tube. Chrome Coating thickness of around 0.10mm is recommended.