Active chatter damping
Aluminum cold rolling millProductivity
- Increase of rolling speeds by 200 m/min. expected
Efficiency
- Increased output of >10 %








Challenges
- The max. rolling speed of tandem mills is often restricted by self-excited (150-250Hz) or externally exited (750-1000Hz) mill vibrations resulting in strip thickness defects and equipment damage
- Consequently, the mill speed must be reduced
Solution
- Application of precise counter vibrations by piezo actuators eliminating mill chatter up to 1000Hz
Technical advantages
- Reliable increase of rolling speed and output independent from characteristics of excitation
- Applicable for retro-fit
- Combination of chatter damping and roll force measurement functionality in one unit