Aluminum Heat Finishing Coupled Thermal Behavior And Temperature Field Of Numerical Simulation Study

Aluminum hot rolling process has a complex non-linear geometry and boundary conditions, and a lot of physical parameters are temperature-related, very difficult to obtain accurate analytical model of rolling, therefore many scholars using numerical simulation method to study the rolling process. By the rolling theory, we can see that in the hot strip rolling process, the rolling temperature and temperature distribution, not only affect the thickness of strip after rolling, but will also directly affect the product's mechanical properties. Therefore, in-depth study of aluminum hot rolling process's thermo-mechanical coupled behavior and temperature distribution, the affection of rolling speed, interface heat transfer coefficient, the initial rolling temperature and rolling reduction rate parameters on temperature field distribution, effective to improve the quality of the final product is of great reference value and significance.Based on the actual structural parameters and process parameters of an aluminum hot rolling production line, use finite element analysis software MSC.Marc created Finishing state large deformation elastic-plastic thermo-mechanical coupled three-dimensional analysis model. Through to the heat transfer process between the roller, the rolled piece and environmental media, the model has five thermal boundary conditions:adiabatic boundary condition, radiation and convection boundary conditions, contact heat transfer boundary conditions, plastic deformation heat boundary conditions and frictional heat boundary conditions. On the results of thermo-mechanical coupled finite element simulation, obtained rolling area temperature field distribution of aluminum hot rolling process, revealing the relationship between the temperature field distribution and rolling speed,interface heat transfer coefficient, the initial rolling temperature and rolling reduction rate parameters, recognizing the heat transfer rule of the system. Based on the research results, we can do some quantitative and qualitative analysis of the emulsion injection technique, for the production lines through the rolled piece's temperature control to improve product quality provide a reference.Through an aluminum hot rolling production line on-site industrial test, obtaining the transverse distribution of temperature field. Comparing with the simulation results, indicate that the numerical simulation results can accurately reflect the actual distribution of rolling temperature field and confirm the numerical simulation model accuracy which this article established.