Articles
Welcome to learn more about Valmet's technology and services offering! This section includes articles that highlight customer cases and success stories around the world, stories about Valmet's innovations and products, as well as give food for thought.
For those interested in helpful tips and practical methods for maintaining and finetuning your processes and equipment, we offer Up & Running articles that are intended to help you keep your paper, board, tissue and pulp machines up and running.
You can sort the articles by various businesses by clicking the left navigation.
Articles
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Field Report - Chronic dryer drive oscillation, a case study
The clack-clack-clack noise warned of heavy oscillation in the drive, subjecting the machine to potentially damaging duress. The only known cure was a shutdown and restart, costing the mill productivity and dollars. The shift supervisor calls in a drive technician for assistance...
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Marine business creating environmentally sustainable solutions
Work in the marine industry is meaningful with Valmet's automation and flue gas cleaning technologies.
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Field Report - Cleaning VacRolls
VacRoll suction holes and the grooves of all rolls should be cleaned regularly, as they may get completely clogged due to web moisture, particularly at the start of the dryer section. Bearing housings also need attention. Proper handling of the rolls is also important.
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Valmet took total responsibility in Karlsborg and got the order
BillerudKorsnäs Karlsborg replaced the old quality control system and a rebuild after the dryer section was needed. Valmet took responsibility for the rebuild and the control system, and the grammage and dry content control is done by Valmet IQ System.
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Innovative moisturizer application provides immediate benefits
The Iggesund Workington board mill in the UK has successfully applied a Valmet IQ Moisturizer in board production to achieve higher production rates especially with higher grammage products.
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Increase dewatering, reduce vacuum needs with Valmet Hard Coating Solid and Valmet Uhle Box Cover
The new coating and uhle box cover also improve runnability, moisture profiles and felt lifetime. The technology is unbeatable and several references prove it.
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Field Report - Care and handling of Uhle boxes
Reliable operation of a press section uhle box requires attention to care and handling, as well as routine maintenance. Blades and covers are susceptible to costly damage if improperly handled and maintained.
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Field Report - Screen cylinder troubleshooting
Once a screen cylinder's holes plug or its raised plating or coating is worn smooth, a host of operational problems can occur affecting runnability, capacity, pulp quality and cylinder life. There are three warning signs of excessive wear to monitor.
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Field Report - Common hydraulic valves, pressure reducing valves
Pressure reducing valves are used to create and hold a pressure setpoint in a downstream hydraulic branch. Valmet uses sandwich style valves because they are easy to fit in a stacked hydraulic valve block circuit.
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Field Report - Reel primary arm nip relief
Excessive bottom waste occurs during turn-ups where there is insufficient primary arm nip relief at the reel. To avoid this, primary arm nip force control should start before turn-up and continue smoothly as the building parent reel travels down along the reel drum to the secondary arms at the kickout rails.