Guidelines for thermal spray coatings installed to prevent corrosion in pulp mill process equipment, Technical Information Paper TIP 0402-32 (2023)
These guidelines cover project and quality-related issues for metal thermal spray coatings installed to prevent aqueous corrosion in pulp mill process vessels including digesters, flash tanks, evaporators, and concentrators. Thermal spray coatings protecting recovery boiler tubes, restoring Yankee dryer surfaces, hard-surfacing calendar rolls, and ceramic (“granite”) coatings used on paper machine rolls are not covered by this document, although the basic, application guidelines and qualification procedures described here apply in general to those applications as well.