Savon Sellu signed a roll service agreement for the board machine with Valmet in 2011.
When we began having trouble with the large process rolls and saw an increase in the number of unplanned shutdowns, roll management became a focus area in maintenance. For this purpose, we got a fine partner”.
Jussi Herranen, Maintenance Manager, Savon Sellu
Summary table
Location
Kuopio, Finland
Customer target
Main goals were defined in detail; achieve long running times for rolls, to service and grind the rolls with minimal effort, clear operating model and decrease the number of unplanned shutdowns due to rolls.
Solution
The agreement included covering, grinding, roll service and service parts. Also maintenance and operating training was included. Condition monitoring software application by Valmet Automation continuously monitor 350 points in the board machine.
Results
Doubled running times of the roll covers in the third press, unplanned shutdowns caused by these rolls was eliminated.
Technical data
Grade
Semi-chemical fluting, Powerflute
Wire width
6,700 mm
Production speed
700 m/min
Production capacity
About 275,000 tonnes per year
"With the rolls operating without problems, availability and cost efficiency have clearly increased. Knowing precisely the prices and service times for roll service, grinding and covering means that we save time."
Mr. Pasi Riikonen, Mechanical Area Supervisor at the board mill
