Textured rolls for processing steel etc. - have electrolytical treated, surface deposited with chromium coated with nitride by PVD or CVD

摘要

Textured rolls for processing steel and other materials are electrolytically treated on their working surface to deposit a layer of hard Cr, primarily on the tips and sides of the texture, and are then treated by a physical or chemical vapour deposition process to deposit a hard material, primarily on the exposed, raised area of the texture. The hard material is pref. Cr nitride. ADVANTAGE - Substantial improvement of wear resistance.