2019 Pittsburgh AISTech

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Feedback Control for Hook, Camber, Wedge and Strip Steering in a Hot Strip Mill (Room 306)

New strip steering technologies have been activated at hot strip mill No. 1 of thyssenkrupp in Duisburg, Germany. The system consists of two main components. In the finishing mill, camera signals are used to swivel mill stands in-bar at thread-in and during rolling to minimize the lateral movements of the produced strip. In the roughing mill, a newly developed algorithm detects hook ends from the camera readings. The swivel values in the roughing mill are derived from a strip-to-strip feedback control, which considers the measured wedge behind the finishing mill and the detected hook ends on the transfer bar.