Search results

Ahto – Escorting LNG vessels with professionalism

Arctia Karhu has several harbour icebreakers in the Finnish coastal waters. One of them is the harbor icebreaker Ahto. It is involved in supporting icy navigation and working as a tugboat to help LNG vessels get safely to the port. The operating process in the vessel is controlled using the Valmet DNA automation system.

Supplier sustainability audit kicks off a cycle of positive developments

"All companies should demand responsible conduct from their suppliers and thus ensure they operate responsibly throughout the value chain. This means hard work, of course, but can really make a difference on our way towards a more sustainable future," says Laura Puustjärvi, Head of Sustainability at Valmet.

Example pneumatic maintenance schedule - weekly, monthly, annual

While pneumatic components and systems normally require very little maintenance, regular inspections with minor adjustments are important. This schedule and tips are intended as a guideline.

Valmet supports education of children with SOS Children's Villages of India

For over 50 years, the SOS Children's Villages of India has been providing family-based care for parentless or abandoned children in India. Valmet has been supporting the organization since 2007 by helping its work to benefit children in need of care and protection.

Reel secondary arm synchronization provides even loading

Secondary arm movements need to move at the same speed both when loading against a new spool and when unloading a full jumbo roll. Otherwise the roll may stop or come off the rails or yield loss may occur.

Instructions for safely taking and using calender nip impressions

Nip impressions are usually taken at installation or to investigate causes for poor paper quality. Taking nip impressions is dangerous if not performed correctly, and should only be done by trained personnel.

Measuring wound-in tension - WIT-WOT and gap test methods

Among the most important factors determining the quality of a finished paper roll is consistent roll structure. Wound-in tension is the most important component of roll structure. The WIT-WOT and Gap Test are methods of measuring wound-in tension.

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.

Headbox apron shower troubleshooting variables, and a case study

The key word in papermaking is uniformity, and the apron shower plays a primary role in maintaining this characteristic. Shower water volume, pressure and temperature are critical factors. The case study involves the three indicators of a thermal bow problem in the apron lip.

Roll grinding procedures, wheels, belts, setup, end relief, tips

Successful roll grinding depends on many factors. The knowledge and experience of an operator, the condition of the roll grinding equipment, and continued preventive maintenance of equipment, all contribute to the ability to meet dimensional tolerances and surface finish requirements.