Bimetal;  Compounding;  temperature field;  Numerical simulation

Numerical simulation was applied to calculate the unsteady state temperature field in the process of bimetallic compositation. Due to the different characteristics of temperature changes of the outer material and the core material in the solidification process, different weight coefficients are selected to calculate the temperature. At the same time, in the calculation of temperature, the influence of various factors such as thermal resistance of bimetallic composite bonding interface, latent heat release during solidification process, and thermal conductivity are considered. The temperature values at different locations are collected by thermocoupled, and the collected temperature curves are compared with the simulated temperature curves, and the results show that the simulated temperature curves can reflect the actual temperature changes.