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Abstract: Chatter in the rolling stack of high velocity tandem mills
and temper mills is a widespread problem as it affects the quality of
the finished product and the productivity of the rolling mill. In order
to control chatter in cold rolling operations, a much deeper
understanding of the basic mechanics of the problem is required.
Therefore, a rolled strip chatter model for comprehending instability of
the strip due to the change of the friction force and a
third-octave-mode regenerative chatter model due to time delay effect of
the chatter marks between the immediate stands are proposed, and
stability analysis of chatter models due to negative damping is given.
Subsequently, for more detailed understanding of the third-octave-mode
regenerative chatter phenomena, industrial investigations proceed in
practice and a simulator is developed. The simulation results indicate
that regenerative chatter is much more serious than simple chatter.
Key words: Rolling mill Third-octave-mode chatter Regenerative
chatter Phase-plane Model
CLC No: TP123
TG335.12
国家重大基础研究项目基金(G1998020320)和湖北省自然科学基金(2000j125)资助项目. Received 20020424,
received in revised form 20021216
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