Chatter Mark Investigation
Chatter marks are a common and costly surface defect in steel and aluminium production. They can be caused by roll grinders, rolling mills, tension levellers, and other finishing line machines, impacting product quality and increasing downtime. Vibremo works with sheet metal producers to identify the root causes of chatter marks and implements solutions to improve surface quality, machine performance, and production efficiency.
Chatter Mark Investigation
In high performance steel and aluminium production, your roll grinding operation must deliver flawless rolls, free from chatter marks and ready for the mill. At Vibremo, we specialise in vibration inspection of roll grinding machines to improve roll surface quality for more time in the mills and maintain production efficiency.
Chatter marks are a common and costly surface defect in steel and aluminium production. They can be caused by roll grinders, rolling mills, tension levellers, and other finishing line machines, impacting product quality and increasing downtime. Vibremo works with sheet metal producers to identify the root causes of chatter marks and implements solutions to improve surface quality, machine performance, and production efficiency.
Chatter marks in sheet metal production
Chatter vibration on roll grinders, rolling mills, tension levellers, and finishing lines can cause severe surface quality issues on output strip, and are often the result of complex vibration issues that that are impossible to identify visually.
These defects frequently come from structural resonances or forced vibration sources such as bearing faults, misalignments, or imbalances. Without proper investigation, the root cause remains difficult to identify and the problem persists.
Chatter issues reduce mill and line productivity primarily through coil rejection and more frequent roll changes, increasing downtime and energy use. Addressing the root cause of chatter mitigates these effects and supports a more sustainable, efficient production process.
How Vibremo supports you
On-site vibration surveys
Measure vibration on grinders, mills, tension levellers, and finishing lines to identify the root cause of chatter marking.
Root cause analysis
Differentiate structural resonances from forced vibration and pinpoint components causing chatter.
Process optimisation
Review speeds, feeds and other operating conditions to identify combinations prone to chatter.
Corrective actions
Provide recommendations for operating conditions, component repairs, structural adjustments and more, to minimise chatter and improve production.
Typical findings & solutions
Structural resonances excited during grinding, rolling, levelling, or other finishing processes are common sources of chatter marks. Resonances can involve the machine frame, bearing housings, roll chocks, or other structural supports.
Forced vibration sources such as misaligned couplings, worn bearings, unbalanced wheels, and gear system defects frequently generate vibration. Chatter may also appear when operational conditions coincide with critical resonance frequencies, such as certain roll speeds or line tensions.
Through vibration analysis and operational monitoring, these factors are identified and corrective actions are recommended. Corrective actions can include adjustment and balancing of rotating assemblies, component inspection and replacement, structural tuning or damping modifications, and optimised operating conditions to avoid excitation of critical resonances.
Investigations are customised for each machine and process to effectively reduce chatter and improve surface quality.
Benefits for your operation
Maintain quality
Reduce chatter mark occurence for less product rejection.
Increase efficiency
Fewer unplanned stops and a more consistent operation.
Extend machine life
Less vibration on bearings, drives, and structures.
Proactive maintenance
Monitor trends to prevent future production issues.
