Acid Cleaning to remove "Hot Spots"
When heat transfer rolls (both heating and cooling) are having problems keeping a consistent temperature across the face and your web is sticking to the roll (commonly called hot spots) internal acid cleaning could be the solution.
Our inhibited acid cleaning process clears the rolls internal flow passageways while not attacking the base metal. This approach selectively removes deposits from the flow passages, thereby improving the heat transfer performance.
Acid cleaning is best used as a preventative measure to keep "hot spots" from developing into heat transfer issues. If your cooling water system is subject to calcium deposits, or you may have carbon buildup from hot oil systems, regular acid cleaning is recommended to ensure good thermal performance and acceptable roll life.
Roll Technology is constantly striving to improve its services and we have recently upgraded our acid cleaning service. We now take thermal imaging pictures of the rolls internals before flushing and after flushing - showing the difference in the rolls fluid flow. We have also added a vibrating technique while the roll is being flushed to further loosen the calcium deposits and/or carbon deposits and scale buildup.
To learn more about Acid Cleaning, contact us today!