Keeping the press rolling

Just a few hours each month is allocated for maintenance. The inner workings of the PM7 comprise many hundreds of rollers, cylinders, pumps, drives, pipes and valves and Henkel Loctite is used for cleaning, bonding, sealing and lubricating these vital components.

Moist cellulose is sprayed onto rollers of the PM7 as part of the paper production process. It is essential that this, as well as surplus hydraulic oil, is effectively removed so the Loctite anaerobic adhesives can achieve an effective bond and seal. For this purpose the maintenance team uses Loctite SF 7063 to ensure there are no contaminants to impede the efficiency of the processes.

The nature of the PM7’s job means its components are subject to constant vibration.  It is therefore important to ensure that threaded assemblies do not shake lose. A Henkel mainstay for this application is Loctite 243. This medium strength product is proven to tolerate slight contamination of industrial oil and is formulated to allow part disassembly with hand tools for servicing.

For sealing of flanges – the cover of a large vacuum blower, for example – Loctite SI 5980 was chosen as it fills all surface irregularities and gaps to achieve an efficient bond. This black, alkoxy silicone was chosen by the maintenance team for its good oil resistance.

Given the hot and damp environment, it is also essential that assemblies are protected against corrosion and fretting. Loctite LB 8150 Anti-Seize is extensively used. This contains aluminium, graphite and extreme pressure additives to provide lubrication at high temperatures and operating speeds.