Numerical simulation of reheating system heat transfer coefficient with H63 brass alloy

Based on the platform of DEFORM software, the H63 brass alloy material model was developed, and then use the thermocouple temperature measurement method, measure the heating curves of the H63 brass alloy of different specific points during the secondary heating process, import this curve into the Inverse Heat module, in this case the inverse calculation of the heat transfer coefficient (HTC) of reheating system was proceed and a good HTC curve was obtained. Numerical simulation results showed that HTC became larger when the temperature difference between the specific point and the reheating environment increased, this trend consistent with the theory. This study provides important theoretical basis for semi-solid secondary heating process parameter optimizations and the follow-up thixoforming.