Patent ID: 7086260
Filing Date: 2006-08-08
Classification: B21B

Abstract:
1. A method for controlling a final thickness of a rolled product at an outlet of a rolling mill including at least two roll stands operating in tandem and each roll stand determining a portion of a global reduction in thickness to be carried out, by running the rolled product between two working rolls, each roll stand being associated with means for applying an adjustable clamping load between the working rolls and driving means for applying, to the working rolls, a rotational driving torque at an adjustable speed, the rolling mill being associated with a speed control system of the at least two roll stands determining a gradual increase in a rotational speed of the working rolls in relation to a gradual variation in thickness from one roll stand to the next, and to a control device for controlling a reduction in thickness and in tension of the rolled product in each space between two successive roll stands, wherein the control device performs, in real time, dynamic balance, between different roll stands, of the torques applied, in each roll stand, on the working rolls without any noticeable disturbance of the final thickness of the rolled product at the outlet of the rolling mill.