Cellulose Pressure Roll - Hard-wearing and Rust Free Coating Solution
A cast iron pressure roller used for crushing chemical wood pulp, and measuring approximately 70cm (2’3”) in diameter by 350cm (11’6”) long, has been sprayed with stainless steel by Norwegian company Metalliseringsverket – Olsen & Borge A/S in Oslo. These rolls are made of cast iron, therefore rust staining of the wood pulp is unacceptable. The coating of stainless steel not only presents a hard-wearing surface but also acts as a protective coating to prevent staining. After spraying and finishing to a thickness of over 3.2mm (1/8”) the surface is grooved to a width and depth of 1.5mm over the whole surface. This is another application, which started as a reclamation process and is now being used on new components to improve their life and performance. The coatings are applied by Flame, Arc and Plasma spray.
