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A coupled thermo-mechanical model containing metal flow and temperature field for calculating temperature variation has been developed on fourteen-pass hot continu-ous rolling of round rod for Inconel 718 alloy using 3D elastic-plastic finite element method(FEM).The temperature of characteristic analysis points in the intermedi-ate cross-section of the workpiece has been simulated at initial temperature ranging from 960 to 1000 °C and initial velocity in range of 0.15-0.55 m·s-1.Based on fi-nite element analysis and microstructural observation in cylindrical hot compression experiments,the appropriate hot continuous rolling technologies have been designed for rod products with different diameters.For a real rolling practice,the simulated surface temperature was examined and is in good agreement with the measured one.
A coupled thermo-mechanical model containing metal flow and temperature field for calculating temperature variation has been developed on fourteen-pass hot continuo-ous rolling of round rod for Inconel 718 alloy using 3D elastic-plastic finite element method (FEM). The temperature of characteristic analysis points in the intermedia- ate cross-section of the workpiece has been simulated at initial temperature ranging from 960 to 1000 ° C and initial velocity in range of 0.15-0.55 m · s-1. Based on fi-nite element analysis and microstructural observation in cylindrical hot compression experiments, the appropriate hot continuous rolling technologies have been designed for rod products with different diameters. For a real rolling practice, the simulated surface temperature was examined and is in good agreement with the measured one.