Abstract: A model for the study of hot strip rolling of Q345 is proposed, and the approach is based on thermo-mechanical analysis using the Finite-Element Method (FEM ). To assess the rolling behavior of materials during a pass, finite element program Abaqus/Explicit has been employed and the hot rolling process was modeled in three dimensions. The appropriate models for heat transfer mechanisms are considered and the temperature distribution along the rolled strip and the temperature variation during hot strip rolling process is predicted. The effects of various process parameters such as rolling speed(90 ~210 i/min) , Higher rolling speeds result in lower temperatures in the deformed metal;amount of thickness reduction(5% ~ 15% ) , higher reductions result in lower surface and strip center temperatures；initial thickness of the strip (115 ~345 mm) ,the smaller the size of the area affected by the thermal deformation in the larger plate thickness and interface heat transfer coefficient [30 ~50 W/(m² · K) ]. As the heat transfer coefficient increases, the surface temperature and center temperature of the strip decrease, are considered.

Key words: Hot Strip Rolling, Temperature Distribution, Heat Transfer, Finite-Element Method ,