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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.

SAFETY BULLETIN: Precautions to take 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.

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.

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.

Field services for optimized reliable stock preparation

Maintenance of stock preparation and approach flow systems optimizes their utilization rate and reliable operation, and minimizes unplanned shutdowns.

Five best practices for roll performance and cover life

For optimum performance and to maximize cover life, keep covers clean, monitor and avoid high cover temperatures, check crown and avoid impact damage.

Maintenance and operation of press stretchers and guides

The paper machine has a number of various loop-type fabrics, wires and felts, which must have a specific tension and controlled position in the cross direction of the paper machine (usually in the middle) so that the paper machine operates properly and as designed.

Planning roll maintenance yields the best uptime and efficiency

Operating machines at high speeds, longer operation periods between shutdowns and higher operating efficiency requires a planned roll maintenance policy.

Common ways an OEM partner helps mills achieve their goals

Maintaining a strong relationship with a trusted OEM partner lets producers learn from the industry’s manufacturing legacy and keep operations moving forward.

Ten step procedure for patch repair of rubber roll covers

The trick is don’t rush the job; take your time and keep the patch area clean. You’ll need a Dremel, heating platen and uncured, un-vulcanized rubber stock.