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The emphasis of the activities was on the finding-out of connections between lubrication and roughness of the roll surface and determination of the impact of the lubrication on the bending effect. Moreover, examinations of the connection between roll roughness and the adhesion of scale on the hot-rolled strip were carried out. Another important point was the investigation of the hot-rolling process with particular emphasis on chatter vibration.

The examinations carried out regarding scale forming and pickling properties show that there is no difference between driving the plant with or without roll lubrication. The positive effects of the lubrication on roll force reduction, roll wear, and scale avoidance can be retained, without any negative effect on scale forming and pickling properties. Furthermore, the knowledge on the mechanism of torsional chatter vibration at hot rolling was significantly increased. A vibration model is available to simulate process conditions and to optimise process parameters. A torque vibration monitoring system was installed for the early detection of chatter vibration and is a basis for intervention in the process procedures.

Additional information

Authors: GEIRHOFER R, Voest-Alpine Stahl, Linz (AT);SONDERMANN H, Voest-Alpine Stahl, Linz (AT);NETTELBECK L, BFI, Düsseldorf (DE);UNGERER W, BFI, Düsseldorf (DE)
Bibliographic Reference: EUR 20209 EN (2002), pp.93. Euro: 14.50
Availability: EUR-OP reference: KI-NA-20209-EN-S Available from EUR-OP sales agents. URL:
ISBN: ISBN: 92-894-6727-7
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