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Inspecting dryer cans - guide and recommended procedures
This article covers recommended types of dryer inspection and frequency. An inspection program is necessary to detect early signs of dryer component failure.
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.
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.
Valmet Refiner Segments - there is always a higher level
Are there limits to refiner segment technology? We optimize processes and stabilize them at the highest attainable and sustainable level. Some engineers might feel satisfied at this point, but at Valmet we don’t.
ServoNavitas - your toolbox for refiner segment technology
Refining is the key process when producing both mechanical pulp and fiberboard. Valmet continuously develops refiner segment technology to improve customer competitiveness. As a result of this development we present a new unidirectional segment concept called ServoNavitas.
Reading fluids circuit diagrams - hydraulic circuit examples
The previous article in this series introduced fluids (hydraulic and pneumatic) circuit elements. This article describes three example hydraulic schematic diagrams: cylinder movement, sizer applicator beam turning and pope reel secondary arm movement.
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.
Start with an audit - common reeling problems and their solutions
Valmet offers reel audits and assessments to help fully understand all aspects of a reeling problem. Discussed here are some common items found when Valmet assesses reel operational challenges.
Sleeve roll on board gap former - vacuum reduction test run
What happens on a board gap former if initial forming section vacuums are turned off? The answer is groundbreaking results, if the forming section is equipped with innovative Sleeve roll technology. Watch this video to learn more.
ITC Bhadrachalam mill - Boosting performance with major upgrades
Systematic development has made ITC’s Bhadrachalam mill a benchmark in India. Close cooperation with Valmet in planning, design, and execution has enabled seamless upgrades, reliable performance, and continuous improvement.
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