ROLLING MILL MEANDERING DETECTION DEVICE AND ROLLING MILL MEANDERING DETECTION METHOD

To provide a meandering detection device and a meandering detection method by which meandering behavior of a rolled material can be detected more suitably.SOLUTION: This rolling mill meandering detection device 2a comprises: a tensile force measuring unit 21a which is located on an inlet side before a pair of work rolls of a rolling mill, and measures a tensile force of a rolled material to be rolled by the rolling mill at a prescribed measurement position along a width direction; and a meandering behavior determination unit 222a which determines meandering behavior, which is temporal change of a meandering amount of the rolled material, on the basis of a measurement result of the tensile force measuring unit 21a.SELECTED DRAWING: Figure 2 【課題】本発明は、圧延材の蛇行挙動をより適切に検出できる蛇行検出装置および蛇行検出方法を提供する。【解決手段】本発明の圧延機の蛇行検出装置２ａは、圧延機の一対のワークロール以前の入側に配置され、前記圧延機によって圧延される圧延材の幅方向に沿った所定の測定位置での張力を測定する張力測定部２１ａと、張力測定部２１の測定結果に基づいて、前記圧延材の蛇行量の時間的な変化である蛇行挙動を判定する蛇行挙動判定部２２２ａとを備える。【選択図】図２