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针对铝板带冷轧过程中弯辊力的预设定问题,采用非线性有限元仿真软件ABAQUS建立了辊系的三维弹塑性有限元模型和工作辊的热凸度模型,通过改变模型的边界条件进行有限元求解,分析了板带轧制过程中弯辊力变化对辊系的弹塑性变形影响以及工作辊的热变形特征,并将模拟结果与某厂生产现场采集的数据进行比较。结果表明弯辊力对板形对称缺陷的改善效果明显,并得出弯辊力的最佳设定值约为300 k N;分段冷却使工作辊热凸度减小了约25μm;二者配合使用使工作辊横向承载辊缝值分布趋于均匀,板带板形趋于良好。
Aiming at the pre-setting problem of the bending force during the cold rolling process of aluminum strip, a three-dimensional elastic-plastic finite element model and a thermal convexity model of the work roll were established by nonlinear finite element simulation software ABAQUS. By changing the boundary conditions The finite element method was used to analyze the influence of the bending force on the elasto-plastic deformation of the roll system and the thermal deformation characteristics of the work roll during the strip rolling. The simulation results were compared with the data collected from the production site of a factory. The results show that the effect of bending force on the symmetry defect is obvious, and the optimal setting value of bending force is about 300 kN. The segmented cooling reduces the thermal crown of work roll by about 25 μm. With the use of the work roll lateral load roller seam distribution tends to be uniform, strip plate tends to be good.