MULTI-ROLL METAL STRIP LEVELLER

The present invention relates to a metal strip leveller (B), said strip having a thickness (e) subject to a stress distribution, said leveller comprising: a row of upper rolls (1, 3, 5, 7, 9...) and arow of lower rolls (2, 4, 6, 8, 10...), the upper and lower rolls have parallel axes, longitudinally offset in a direction of line of passage (lp) and offset in height, in such a way as to define, byvertical imbrication of the rolls, an undulating path of the strip between said rolls, characterized in that at least two upper rolls ([1, 3]; [5, 7]) and two lower rolls ([2, 4]; [6, 8]) are arranged respectively above and below the line of passage, such that they form three vertical imbrication gaps, said gaps having a profile of non-linear imbrication values (Imbr) that are either convex or concave with respect to a profile of linear imbrication values (Imbr_lin) in the direction of the line of passage. 本发明涉及一种金属带材校平机（B），所述带材具有受到应力曲线影响的厚度（e），所述校平机包括：一排上辊（1、3、5、7、9...）和一排下辊（2、4、6、8、10...），所述上辊和下辊的轴线平行，在通过线（lp）方向上纵向偏