Patent ID: 8731702

Claim:
An operating method for a continuous rolling train which has a number of roll stands, with a rolling stock passing through the continuous rolling train being rolled in a plurality of the roll stands in succession, such that the rolling stock has predetermined final properties when it leaves the rolling train, wherein to remove one of the roll stands rolling the rolling stock from the continuous rolling train during the rolling of the rolling stock, the method comprises: controlling by a control device of the continuous rolling train the roll stand to be removed such that the roll stand to be removed is completely relieved of load according to a defined temporal load relief profile, such that the roll stand to be removed rolls a certain section of the rolling stock during the load relief profile, controlling by the control device at least one other of the roll stands of the continuous rolling train such that the at least one other roll stand has load applied to it according to a defined temporal load application profile, wherein the load relief profile of the roll stand to be removed and the load application profile of the at least one other roll stand are coordinated with one another such that, during the load application profile, the at least one other roll stand rolls one and the same section of the rolling stock as the roll stand to be removed during the load relief profile, and such that the final properties of the rolling stock are maintained, controlling by the control device a rotational speed of working rolls of the roll stand to be removed until the roll stand to be removed is completely relieved of load, in such a way that an exit speed of the rolling stock effected by the rolling of the rolling stock in the roll stand to be removed corresponds at all times to a predetermined setpoint exit speed, and controlling by the control device the roll stand to be removed, after the roll stand to be removed has been completely relieved of load, and so as to maintain a correspondence of the rotational speed of the working rolls with the setpoint exit speed, such that the working rolls of the roll stand to be removed are lifted off the rolling stock, and said control device then brings the roll stand to be removed to a stop.