Passivation

Chromium – helps to protect…

The chromium contained in the stainless steel reacts with oxygen to form a protective layer with a rich chromium oxide content - the passive layer. The aim is therefore to strengthen this protective layer by additional passivation.

Every new plant should therefore be correctly passivated in order to delay the onset of rouge for as long as possible. However a lot of expertise and experience are required if the procedure is to be successful. Qualities which our employees have in abundance.

Regular maintenance for lasting success...

If you don´t keep at it, you get rusty - that´s the motto with rouge. Even after successful passivation, the protective layer of chromium oxide can be eaten away after a certain time. The tiresome consequence: rouge can start to spread again.
So stay - on the ball - and have your system inspected and routinely maintained on a regular basis, at least once a year. Depending on the formation of the rouge, we recommend a derouging/repassivation process as part of a routine procedure defined by SOPs every 6 to 12 months. This will guarantee your system against serious formation of rouge as well as the latent damage and increased costs that can ensue. Risk analyses on this aspect can also be compiled.