Abstract
This paper studies hot rolling process of typical low carbon steel by using rigid-plastic finite element also found that rolling force remains unchanged when initial slab temperature reaches certain value. The friction and effective stress distribution in the slab are obtained for the steady-state rolling process. The positive friction in backward slip zone is found to be greater than the negative friction in forward slip zone along rolling direction, indicating that friction acts as the driving force in the rolling process.http://dx.doi.org/10.5755/j01.mech.17.5.722
Highlights
3D numerical simulation technology has been used to solve rolling problems based on FEM, as numerical simulation method can shorten development periods, and reduce the cost of research and development
The study of rolling force and energy parameters in the hot rolling process has attracted a lot of attentions in the literature
The 2D models of the roll and the slab are developed to investigate the effect of different process parameters such as initial rolling temperature, slab thickness, rolling speed, friction coefficient, and reduction rate on the rolling force, normal force, and effective stress distribution
Summary
The hot continuous involves in material, geometry and contact nonlinearities, and it is difficult to obtain analytical solution. Prediction of rolling pressure and rolling force of wire [1], calculation of rolling pressure of strip [2], simulation of stress and temperature [3], study of plastic deformation of strip [4, 5], and discussion of strain and stress. Some researchers studied the effect of reduction [11], width spread [12], and frictional coefficient [13] on the distribution of temperature, stress, and separating force using the frictional shear stress model. The 2D models of the roll and the slab are developed to investigate the effect of different process parameters such as initial rolling temperature, slab thickness, rolling speed, friction coefficient, and reduction rate on the rolling force, normal force, and effective stress distribution. Friction distribution in the deformation zone is studied based on 3D models
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