Study of surface treatment techniques for industrial painting in near shore environments

Abstract

Corrosion is one of the main factors responsible for losses in companies subject to aggressive atmospheric environments, as is the case with industries in the oil and gas area, close to coastal regions. This work carried out a comparison between two surface treatment techniques for industrial painting in order to find the most resistant technique to the environment in which the equipment was inserted. An experiment, using the techniques of mechanical treatment with needle gun and wet abrasive blasting, was carried out in an industrial oil refining unit. The study was developed through the application of the two techniques in industrial valves that were in operational conditions and available in a treatment cabin. The results showed, right after treatment and before paint application, that the surface worked with wet abrasive blasting was cleaner and free of encrusted oxides than the surface treated with a needle gun. The results were also analyzed during the exposure of the valves, over time, after the application of the paint. It was noticed, in a period of sixteen months, that there was greater durability, in relation to the appearance of corrosion points, on the surface treated with wet abrasive blasting.

DOI: https://doi.org/10.56238/methofocusinterv1-086