Pretreatment
Prior to welding to the tank shell, stamped external hardware such as hanger brackets and lifting lugs are vibratory finished to remove burrs and insure a smooth radius edge to allow consistent edge coating.
An eight-stage dip process provides two cleaning steps completely remove lubricants and soils. A zinc phosphate coating is applied to enhance corrosion protection by providing tighter, more consistent coating than the typically used iron phosphate. The use of deionized water in the final rinse stages insures that the surface is free of salts and ions that could later provide sites for corrosion initiation. All pretreatment stages are immersion stages, which assures complete and total coverage.
The electrodeposition process assures complete and consistent coverage of the entire tank including complex shapes such as fins, hanger brackets, and lifting lugs.
The "2CEC" process allows us to optimize the performance of the primer and topcoat independently to maximize corrosion protection and ultraviolet light resistance while maintaining superior mechanical properties.
Paint process consistency is assured through automated paint feed and monitoring of a real time basis. Paint system operators monitor and audit the process.
