Abnormal vibration in the tandem cold rolling mill is a common and complicated phenomenon. Researchers tend to consider that mill chatter is a typical selfexcited vibration [1–3], which consists of thirdoctave mode chatter (150–250 Hz), fifthoctave mode chatter (500–700 Hz), and torsional chatter.
Extreme manufacturing danger: the steel mill cobble. By Mark Benson on 6th October 2017 . While a steel mill cobble might be fascinating to watch, akin to a light sabre, they are extremely dangerous and unpredictable. Once a steel mill cobble begins it will only stop when the .