Device for influencing the temperature distribution over a width

A device for influencing the temperature distribution over the width of a slab or a strip (33), particularly in a single-stand or multiple-stand hot-rolling mill, wherein at least one cooling device is provided that features nozzles (14) for applying a cooling medium on the slab or on the strip (33), wherein the nozzles (14) are arranged and/or actuated widthwise in such a way that the cooling medium is applied, in particular, at positions at which an elevated temperature is determined or that the cooling medium is applied in a controlled fashion in dependence on an observed state of surface evenness of the strip in such a way that the surface unevenness is reduced or eliminated or that the cooling medium is applied in a controlled fashion in dependence on a measured strip contour in such a way that the strip contour approximates a desired target contour more closely, wherein at least one measuring sensor (51) is provided for determining the temperature distribution of a slab or a strip—referred to the width of the slab or the strip—such that the nozzle of the cooling device can be activated in dependence on the sensor signal, wherein at least one measuring sensor (98) is provided for determining the surface unevenness of a strip—referred to the width of the strip—particularly downstream of the mill train such that the nozzles to be activated can be selected in dependence on the signal of the sensor, wherein at least one measuring sensor (119) is provided for determining the strip contour—referred to the width of the strip—particularly downstream of the mill train such that the nozzles or zones of the cooling device to be activated can be selected in dependence on the signal of the sensor, and wherein a control unit (96) is provided that processes relevant input variables and determines and controls the cooling medium quantity to be applied for the respective cooling zone and/or cooling position.