Up and Running articles
Up and Running articles
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Comparison of hard and soft bearing roll balancing methods
Hard bearing type balancers measure residual unbalance. Soft bearing type balancers use a stroboscope and pickups to measure vibration amplitude and direction.
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Tips for troubleshooting your roll grinding application
A list of common problems incurred in roll grinding applications and their possible causes. Often, several conditions accumulate to create the problem.
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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.
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Web holder design, principle of operation and maintenance
Web holders maintain tension in a threaded sheet during a splicing or set change sequence. Typically located next to a guide roll or under a rear drum.
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Storage, operation and maintenance of rubber covered rolls
Analysis of your roll records identifies ways to improve rubber roll performance. The cover is a measuring instrument indicating where changes are needed.
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Measuring winder capacity - calculation and interpretation
There are many reasons to increase winder capacity. Speed up / quality are easy to predict, however operational / maintenance related issues are more difficult.
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Smooth extended nip press (ENP) change-out, a case study
Valmet supervised the change-out of an ENP module. This included a preliminary NipScan and audit of the press and hydraulic units to spot potential problems.
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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.
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Answering your questions about Autonomous Mills (webinar)
Mills are interested in how to achieve autonomous mill operations. What decision making automation is needed, and how does this fit with mill plans?
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Troubleshoot dryers and steam & condensate systems, part 2
Dryers and S&C systems involve complicated interdependent process values. Here are practical tips to troubleshoot and operate steam & condensate systems.