ABSTRACT
Figure 17.24 illustrates a practical application of the roll force sensing method that was developed by Nippon Steel, Japan [22). Its principle of operation is based on the assumption that when camber occurs, the rolled plate wags its tail at the mill entry side as it is drawn into the roll bite. Consequently, the plate shifts off the mill center in the roll bite, causing a difference in roll separating force. The automatic camber control (ACC) system performs a feedback control that closes the roll gap of the mill side at which the roll separating force has increased. This increases the elongation at the concave side, thus straightening the plate.
