Mill Vibration Phenomena during Cold Rolling All machines vibrate during operation However only a few of these vibrations cause problems to the product or the machine itself Typically the most damaging vibrations involve a natural resonance of the machine which significantly increases the ... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
Mill Vibration Phenomena during Cold Rolling All machines vibrate during operation However only a few of these vibrations cause problems to the product or the machine itself Typically the most damaging vibrations involve a natural resonance of the machine which significantly increases the
Oct 01 2019 · Valigi et al 2014 investigated the chatter marks and vibration phenomenon in a sixhigh cold rolling mill and pointed out that the typical vibration frequency of the sixhigh cold rolling mill was still within the range of thirdoctave mode chatter Recently mill chatter has been recognized as the bottleneck in high speed rolling
Mar 26 2002 · In particular a stability criterion for the critical rolling speed is used to predict the maximum rolling speed without chatter instability on schedules from a 5 stand tandem mill rolling thin steel product The results correlate well with measurements of critical speed occurring on the mill using a vibration monitor
Mill Vibration Phenomena during Cold Rolling Innoval Mill Vibration Phenomena during Cold Rolling All machines vibrate during operation However only a few of these vibrations cause problems to the product or the machine itself Typically the most Mill Vibration Phenomena during Cold Rolling All machines vibrate during operation
Mill chatter in tandem cold rolling mill is a major rejection to the quality and production of the strips In most mill vibration models either the roll mass is usually limited to vibrate in vertical direction and verticalhorizontal directions or the multiple rolls system is simplified to a single mass system However the torsional chatter is also a typical type of mill chatter and the
Nov 22 2013 · As a 5 to 6 micron finish is desirable during the final rolling or “skin pass” the work rolls are changed for the ‘skin pass” operation Typical regrinding time for work roll is 100 passes The first step in cold rolling is alignment during which the centre line of feed stock is aligned with the centre line of the mill
The angular and radial backlashes due to intensive wear are the most distinctive feature of the cold and hot rolling mills drive trains It causes nonlinear torsional vibration and significant torque amplification It leads to equipment failures but it could be used for wear diagnostics in the range of natural frequencies of the drive trains during the transient processes
In the context of online monitoring for the cold rolling mill process we study the vibration for the most important parts of the cold rolling mill equipment When in work the rolling mill causes severe damage for the mill machine and has a negative influence on the strip quality Fig 1 When we talk about steel strip quality we take
Rolling mills are prone to many different vibration phenomena especially when rolling highstrength steels in combination with thin product gauges and high rolling speeds These vibrations can have a significant impact on quality and productivity in coldrolling mills
Oils soap emulsions fatty acids are used as lubricants during hot rolling nonferrous metals Mineral oils paraffin fatty acids are used for cold rolling Normally foe ferrous alloys no lubricant is used 17 Rolling mill control Production of continuous sheets and strips is one of the attractive features of modern rolling mills
