To meet the requirements of mold for copper tube material, generally selected materials are red copper, deoxidized phosphorous copper, silver copper, chromium

To meet the requirements of mold for copper tube material, generally selected materials are red copper, deoxidized phosphorous copper, silver copper, chromium zirconium copper and so on. Copper tube manufacturing is generally through steel ingot forging or processing, and then through the pipe, the production of copper tube blank, and then copper tube drawing, processing, plating and other processing. Now the mould copper tube used for square billet, large billet and tube billet is used more deoxidized phosphor copper in China. The high speed casting machine starts to use chromium zirconium copper, and the mould copper tube billet is partly processed as a whole.

In order to eliminate or reduce the influence of air gap, the mold cavity should be designed with a certain inverted taper according to the different shrinkage characteristics of steel grade and the degree of thermal deformation of mold copper plate. Pour mould taper should follow the following principles: the choice of solidification shrinkage properties of steel grade, mould cavity within the shape should be larger limit is suitable for the actual shape of solidification shell mould, make the whole mold gas gap thickness dropped to a lower level, improve the effect of heat transfer in the mould, in order to guarantee the uniformity of the thickness of the solidified shell in the mould and mould under the shell thickness. After the use of copper tube, if the maintenance span can not restore the mold taper to the standard range required by the steel mill, then the life of copper tube of mold is expired.