As if there is no way to get congruity between flatness and surface roughness, for the control of the latter, larger rolling force during the final pass is expected, while the former stands against.

• 从带钢的板形控制角度,又不希望使用过大的轧制力,似乎表面粗糙度和板形控制均在成品道次实现存在难于调和的矛盾。