论文部分内容阅读
针对高强度带钢连续退火过程易发多发的板形翘曲问题,根据带钢纵向延伸在厚度方向分布不均导致了翘曲的机理认识建立了带钢翘曲生成力学模型,求解获得带钢上下表面延伸差与翘曲大小的关系及影响规律,并分析指出连退机组平整机单辊驱动是导致带钢产生上下表面延伸差的主要原因。为解决某高强度带钢连退机组存在的板形翘曲问题,建立该机组平整轧制过程有限元仿真模型,模拟分析上下工作辊辊径差、轴线偏心距和摩擦因数差对带钢上下表面延伸差的影响,并提出以减小厚度方向延伸不均为目标的板形翘曲控制的若干对策措施。将所提出的对策措施上机试用并多次优化调整后稳定用于某连退机组的实际生产,使该机组产品带钢的板形翘曲缺陷得到明显改善,创造显著经济效益。
Aiming at the problem of plate warpage that is prone to occur frequently in the continuous annealing process of high strength steel strip and the warping mechanism is caused by the uneven distribution of the strip longitudinal direction in the thickness direction, The relationship between the upper and lower surface extension difference and warpage size and the influence law are analyzed. It is pointed out that the single roller drive of the smoothing machine in continuous annealing unit is the main reason that leads to the poor extension of the upper and lower surfaces of the strip. In order to solve the problem of warping distortion of strip in a high strength strip continuous rolling mill, a finite element simulation model of the rolling process of the strip was established. The upper and lower work roll diameters, axial eccentricity and friction coefficient difference were simulated and analyzed. The influence of the surface extension difference, and some measures to reduce the uneven thickness of the target plate warpage control measures. The proposed countermeasures on the machine trial and optimization and adjustment for many times after the stability of a continuous unit for the actual production, so that the unit product strip steel warping defects have been significantly improved to create significant economic benefits.