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一、压力计算中存在的问题计算机在线控制和离线分析冷轧过程中,均要求给出较精确的压力预报值。由于冷轧过程的单位压力极高,轧辊将产生显著的弹性压扁现象。它可使变形区长度增长,并通过改变变形区几何形状参数L′/h使摩擦条件的影响加剧,从而使轧制压力大大增加。因此,在确定冷轧过程的轧制压力时,必须考虑轧辊压扁的影响。否则,将产生较大误差。这样必将对设定控制、厚度控制和板形控制带来不利影响。
First, the pressure calculation problems Online computer control and offline analysis of the cold-rolled process, are required to give more accurate pressure forecast value. Due to the high unit pressure in the cold rolling process, the roll will have a significant elastic crushing phenomenon. It can increase the deformation zone length, and by changing the geometric parameters of the deformation zone L ’/ h so that the impact of friction conditions, so that the rolling pressure increased significantly. Therefore, when determining the rolling pressure during cold rolling, the effect of roll crushing must be taken into account. Otherwise, there will be greater error. This will certainly adversely affect setting control, thickness control and plate control.