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板形标准曲线的理论计算方法 总被引:11,自引:3,他引:8
联立板形预报模型和板形判别模型,提出板带轧机板形标准曲线的理论计算方法。该理论计算方法的思路和原则是最大限度地消除板凸度并同时兼顾板形良好,最终使板形趋于最好,这种计算方法的目标是实现板形和板凸度的综合最优控制。以1 220 mm五机架带钢冷连轧机和900 mm单机架带钢冷轧机5道次轧制为例,分别对轧制中凸板和中凹板的情况进行计算,计算结果证实了理论分析计算的正确性。这种板形标准曲线的理论计算方法为进一步从理论上定量研究板形标准曲线模型奠定了良好的理论基础。 相似文献
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In order to investigate the forced transverse vibration of rolls under distributed draught pressure and moment of bending
roll force, the forced transverse vibration model of rolls for four-high rolling mill was established. The work roll and backup
roll were considered as elastic continuous bodies that were joined by a Winkler elastic layer. According to Euler-Bernoulli
beam theory, the forced transverse vibration of rolls was analyzed based on modal superposition method. The forced vibration
equations were established when the draught pressure and moment of bending roll force were imposed on the rolls respectively.
Numerical modeling was made on 2 030 mm cold tandem rolling mill of Baoshan Iron and Steel Company. Simulation results show
that when the work roll is only subjected to different forms of draught pressures, the vibration curves of work roll and backup
roll are quadratic curves with amplitudes of 0.3 mm and 45 μm, respectively. When only the moments of bending roll force are
imposed on the work roll and backup roll, the vibration curves of work roll and backup roll are quadratic curves, and the
amplitudes are 5.0 and 1.6 μm, respectively. The influence of moment of bending roll force on the vibration of work roll is
related with the bending roll force. 相似文献
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