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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.

Dynamic roll balancing - why, how, measurement and specification

Although a roll is statically balanced, it may have an eccentric center of gravity which cannot be detected by simple static balance. This will become noticeable when the roll speed is increased, and an end-for-end motion occurs. Dynamic unbalance requires investigation to determine which end, or both, require counter-weighting.

Chemical recovery technical papers from ICRC Conference

Valmet presented several papers at the International Chemical Recovery Conference in May, 2017. This article provides abstracts of the papers, links to many now available as Valmet white papers.

Reel service case study - Faulty turnups and mechanical audit

A U.S. mill was having problems with faulty turnups. Valmet personnel arrived at the mill, performed a mechanical audit and made adjustments to fix the problem.

OptiFlo headbox and aqualayering at Dong Il, a case study

Finding a better way forward requires a creative mindset and being first to adopt new technologies. Dong Il adopted Valmet's OptiFlo headbox to maintain growth and market share.

Estonian Cell saves with refiner segment agreement, case study

With a pressing need for additional energy savings in their primary refiner Estonian Cell cooperated with Valmet in refiner segment optimization improvements. As a result, Estonian Cell is saving 5 GWh of energy annually.

Enhanced process and quality vision for web break analysis

The Valmet IQ Process and Quality Vision (PQV) system is a comprehensive machine vision solution that covers the entire pulp and paper production process, as well as the production processes for other sheet-based materials.

Improve recovery boiler safety with a custom spout plug

The recovery boiler spout deck is a dangerous area for operators. There are a number of ways to improve safety around the spouts, one of which is a new custom reusable spout plug from Valmet.

Modernize evaporators for significant production cost savings

Evaporator upgrades offer a large potential for energy savings through steam economy, condensate segregation, and scaling and availability.

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.