Finite element analysis of unsteady state in hot extrusion process

hot extrusion;  finite element method;  Unsteady state temperature field

According to the data obtained from the process test, the temperature field of the aluminum bar extrusion forming process was numerically simulated by finite element software, and a cloud map reflecting the temperature field distribution and change of the process was obtained, and the process law was analyzed in depth based on the experimental research and simulation results. The results show that the holding time is an important process parameter that determines the stability of the process and the quality of the parts, and the appropriate holding time can make the metal in the deformation zone in the extrusion process always remain semi-solid, which ensures the smooth implementation of the process. This conclusion provides a theoretical basis for further design and optimization of process parameters.