Reliability
Valmet puts safety before anything else in our daily operations. We're also committed to supporting you in reaching your safety targets.
We provide reliability services that keep your equipment and processes running smoothly. We make sure that spare parts and components are easily available with minimal inventory costs. Reliable deliveries ensure that material is managed efficiently at your site every day.
Our maintenance and shutdown management services help you to keep your production assets in good working condition, minimizing downtime and controlling maintenance costs. We offer services for planning and implementing annual shutdowns to avoid cost and schedule overruns.
Reliability
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A solution for jumbo roll bouncing in the secondary arms
A mill reported that their jumbo rolls were bouncing. This started after their reel's flattened secondary arm rollers were replaced with fresh, round rollers...
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Vibration analysis - introduction to techniques and equipment
This article provides a clear, effective and illustrated introduction to vibration analysis techniques, including principles, equipment and spectral analysis.
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Vibration analysis - commonly used terms and definitions
This article provides definitions of terms that appear in a vibration analysis reports and may need further explanation. Graphics illustrate some concepts.
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Troubleshooting doctors: loading, wear and roll surface marking
Some doctor problems are rather straight forward, readily recognized, and corrected. However, occasionally one will crop up that seemingly has no solution.
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How to troubleshoot calender roll heat transfer problems
The following were noted during installations and are common installation troubles. Read them carefully to rectify or avoid them during your installation.
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Stainless steel care, cleaning, surface prep and passivating
Stainless steel is corrosion resistant and maintains a film of chrome oxide over its surface. Under normal conditions this film is self-healing.
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Forming section troubleshooting checklist extends wire life
Wire life below expectations is of major concern to mill management. These tips are presented in a check list format for quick reference if the need arises.
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SAFETY BULLETIN: Precaution measures before refiner maintenance
Valmet has learned of a catastrophic failure of a Valmet Disk Refiner. Excess pressure was used trying to unplug an inlet pipe. No injuries, but much damage.
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Safe and efficient calender roll removal - four methods
These methods of calender roll removal are recommended by Valmet. Other methods may be used, depending on style/size of calender & available lifting equipment.
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Attenuators - operation, maintenance and troubleshooting
A pulsation attenuator, inserted in the stock approach piping, acts as a buffer for the headbox against pulsations developed by stock system components.