Numerical simulation of multilayered multiple metal cast rolls in compound casting process

•The model for a compound casting is established using ProCAST.•The mold filling, solidification of melt and evolution of temperature field in each stage were investigated.•The simulated temperature history of the Cr4 layer was compared with the measured CCT diagram of Cr4 material.•The position of poor merging with the intermediate layer was ascertained to guide the improvement of the actual process.