In-Situ Roll Balancing A Revolutionary Method for Improving Dryer Section Performance, 2000 Papermakers Conference Proceedings
J Michael Robichaud, P.E.--Unbalance in dryer cans will result in high structural vibrations throughout the dryer section. As the machine operating speed increases, unbalance forces increase dramatically, leading to reliability and product quality problems. Correcting dryer unbalance presents significant technical challenges, due to slow turning speeds, and phase influence of nearby dryers. Traditional correction methods have included extended shutdowns, resulting in significant lost production costs. A revolutionary new technique has been developed, using regular maintenance shutdowns as the opportunity for incremental corrections. The new approach has proven to be especially valuable during speed-up projects. This paper describes the challenges, solutions, and benefits of the In-Situ Roll Balancing technique. Actual data will illustrate results and steps taken to improve the process during development.
In-Situ Roll Balancing A Revolutionary Method for Improving Dryer Section Performance, 2000 Papermak
