PROBLEM TO BE SOLVED: To surely perform flattening of steel while suppressing end waves, with respect to the steel after straightening.;SOLUTION: When straightening the steel 3 by using a roller leveler 1, the steel is straightened after constructing a discriminant wherein rolling reduction IM for straightening, a sheet width W, the effective deflection amount δin the direction of body length and the maximum straightening reaction force P are used as variables and controlling the rolling reduction for straightening of a roller leveler 1 so that the value of this discriminant satisfies predetermined conditions. The discriminant is y=a1+a2*IM-a3*IM/W+a4*δ(T)-a5*δ(T)+a6*P(T), for example, and the predetermined conditions is a formula (a, y≤k).;COPYRIGHT: (C)2012,JPO&INPIT
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机译：解决的问题：对于矫直后的钢，要在抑制端波的同时对钢进行矫正;解决方案：当使用辊式矫直机1矫直钢3时，在构造可减少轧制量的判别式后将钢矫直为了矫正IM，将片材宽度W，在车身长度方向上的有效挠曲量δ和最大矫正反作用力P用作变量，并控制辊矫直机1的矫直的轧制率，使得该值判别式满足预定条件。判别式为y = a 1 + a 2 * IM-a 3 * IM / W + a 4 例如，*δ（T）-a 5 *δ（T）+ a 6 * P（T），并且预定条件是公式（a ，y＆le; k）.;版权：（C）2012，JPO＆INPIT
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