Transactions of Materials and Heat Treatment

Title：Influence of initial curvature on key parameters of plate during leveling process

Authors： Liu Zhifang

Unit： Chongqing University of Technology

KeyWords： plate initial curvature plastic deformation ratio residual stress force parameter

ClassificationCode：

year,vol(issue):pagenumber：2015,40(10):69-75

Abstract：

The distributions of bending curvatures, trajectories, plastic deformation ratios, leveling forces and torques of the initial plate during the leveling process were discussed in detail based on the curvature integration method on the condition of small and large roller reductions respectively. The results show that the reverse bending curvatures of each roller are different for plate with different initial curvatures, even though the roller reduction is the same. Therefore, the leveling force and torque are different. But this difference becomes smaller with the plate moving to the exit. The initial vertical bending curvatures of plate can be eliminated under the condition of either small or large roller reduction. Therefore, the small roller reduction scheme can be chosen for the plate with slight initial bending curvature. The large roller reduction scheme can be used to increase the plastic deformation ratio for the plate with severe initial bending curvature and transversal bending curvatures. On the condition of small and large roller reduction, the leveling forces are of triangle distribution and trapezoid distribution respectively. The oil pressure of the hydraulic cylinder can be set reasonably according to this distribution.

Funds：

校级科研启动基金（2014ZD23）

刘志芳(1984-)，男，博士，讲师

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