2800四辊轧机“逆宽”轧制中的凸度控制

为了研究2800四轧机在工作辊服役后期“逆宽”轧制状态下的凸度控制问题，结合大量的现场实测数据，运用变厚度平面有限元方法建立了专门针对2800四辊轧机的辊系变形（即凸度预测）仿真模型，根据仿真计算结果，揭示届工作辊服役后期的“箱型”磨损辊形，钢板宽度及轧制力等对钢板凸度的影响关系，并提出耵应的生产中可行的控制措施。

Plate Crown Control on RPWIS for 2800 Four-high Mill

On the basis of a large amount of data measured. the problem of rolling by plate width increase in sequence (RPWIS) for 2800 four-high mill, is analyzed. By means of the program of two-dimensional finite element method with varying thickness, the simulative model in the roll deformation or crown forecast for 2800 four-high mill is specially established. In terms of the results of simulative calculation, the influence of work roll wear contour (which appearing in a later period of work roll rolling, like basin's shape), plate width or roll force to plate crown is revealed and the effective method is pot forward to prevent RPWIS.