Patent ID: 8752409

Claim:
An operating method for a rolling train that has a plurality of rolling stands through which a strip runs successively, comprising the steps of: threading the strip into each of the rolling stands with a known respective head displacement in a lateral direction parallel to a rotational axis of a roller of a particular rolling stand and a known respective inlet side head pitch, such that a strip head of the strip is outlet from the respective rolling stand with the respective head displacement, a respective outlet side head pitch and a respective outlet side head curvature of the strip in the lateral direction, and for at least one of the rolling stands: calculating the respective outlet side head pitch based on the respective inlet side head pitch and a respective pass reduction taking place in the respective rolling stand, while rolling the strip through the rolling train, measuring an intermediate stand head displacement of the strip head using a respective position acquisition device arranged between the respective rolling stand and the rolling stand arranged directly downstream of the respective rolling stand, calculating the respective outlet side head curvature of the strip in the lateral direction based on measured intermediate stand head displacement and respective further data, using the calculated respective outlet side head curvature to calculate a respective control intervention for at least one of the respective rolling stand and for a rolling stand arranged directly downstream of the respective rolling stand, and driving at least one of the respective rolling stand and the rolling stand arranged directly downstream of the respective rolling stand in accordance with the calculated respective control intervention.