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The main objectives of this project were the reduction of chatter in the cold-rolling area, the gaining of more insight into excitation mechanism(s), and the discovery of crucial chatter information. These should be achieved by evaluation of data measured on several plants and of data calculated with a chatter model that was to be developed. The set-up of chatter rules should help to avoid the chatter occurrence and to find optimum process parameters.

Therefore, the quality of strip surfaces was investigated, the measurement and analysis of the vibration behaviour of several cold-rolling mills was carried out, and the plant vibration behaviour was modelled. Two plant monitoring systems were further developed and enhanced.

The main results of this project were the explanation of chatter marks by strip surface waves and the prediction of critical rolling conditions by means of the developed chatter model. A few new jittering early warning criteria were introduced and the chatter occurrence was reduced by use of the enhanced monitoring systems. Rules and concepts against chatter were set up.

Additional information

Authors: WEBER J, BFI, Düsseldorf (DE);JONKER K, Corus NL, IJmuiden (NL);GRATACOS P, IRSID, Maizières-lès-Metz (FR);SPINDLER G, Vatron, Linz (AT)
Bibliographic Reference: EUR 20204 EN (2002), pp.120. Euro: 17.50
Availability: EUR-OP reference: KI-NA-20204-EN-S Available from EUR-OP sales agents. URL:
ISBN: ISBN: 92-828-6732-3
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