Coupled Numerical Simulation Of Velocity And Temperature Field In Flat Hot Rolling Process

Flat as an industrial raw material in the national economic departments has a wide range of use. So, rolling technology in industrial production is extremely important. Flat rolling as the core of the rolling technology is a very complicated process of deformation of the metal. The interaction between velocity field and temperature field are mainly reflected in the deformation region. This paper achieved two-dimensional and three-dimensional coupling of the velocity and temperature field in order to arrive the purpose of simulation of true velocity field and temperature field of workpiece, and analysis the differences between the two, the principal tasks are as follows:1) Establish the model of rolling process and program to calculate. On the basis of finite element of velocity and temperature field of workpiece, the paper uses the method of biting each row cell step by step to achieve two-dimensional coupling of the velocity field and temperature field, and programs in Fortran language, and confirms the scene dates of a steel.2) Analyze the velocity field of the deformation region. Analyze velocity field respectively from rolling, width and thickness direction and the slide, the spread, the reduction corresponded.3) Analyze the temperature field of the deformation region. Make the two compared and find that both the overall change in the same trend, and is divided into three regions from the rolling direction which are named the temperature rise, the temperature continues to rise, temperature drop district.4) Analyze the precision of rolling force. The precision of three-dimensional coupling is higher than that of two-dimensional. Increasing the row cell is able to improve precision.