Protective Films - Steel and Stainless engineering

In recent studies, protective films for steel and stainless steel have been highlighted as essential components in modern engineering. Various industries employ these protective coatings to enhance the longevity and performance of metal materials against corrosion and damage.

I am currently working on a project that involves water flowing over a stainless steel (SS316) sheet measuring approximately 1.5m tall by 0.9m wide.

This seems straightforward; however, I have encountered a significant challenge in ensuring that the water flows uniformly across the entire surface. My suspicion is that the protective film present on new brushed or mirrored stainless steel is causing issues. After removing the protective layer, I believe some form of adhesive residue remains. Despite my efforts with solvents and detergents to eliminate this sticky residue, I have not achieved success. In contrast, when using an old piece of stainless steel that has been in the workshop for a couple of years, the water flows freely across its surface.

It appears there is a peculiar type of surface tension on the new sheet once the film is removed.

Any suggestions would be greatly appreciated.

—Simon

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