| Passivation is a process performed to make a surface passive, i.e., a surface film is created that causes the surface to lose its chemical reactivity. Passivation unipotentializes the stainless steel with the oxygen absorbed by the metal surface, creating a monomolecular oxide film. Passivation can result in the very much-desired low corrosion rate of the metal.
It is seen that most of the fabricators are using the passivation solution for only the weld pool line or the heat dissipation areas.
But that doesn’t ensures from risk of corrosion since the pitting on the remaining surface remain untreated as well as the corrosion susceptible gray zone remains forever. The simple spatters of the grinding also get indented into the surface and it causes the seeding for the corrosion. The chromium in the Stainless steel is playing anticorrosive roll in the play by forming the Cr2O3 Chromic Oxide. But it doesn’t guard against free ferrite on the surface.
With our passivation treatment on total area the there is hardly any corrosion susceptibility since all dirt is dissolved and the surface gets converted to the higher oxidation status as uniform film it becomes redundant to further corrosive attacks.
The passivation cost per square meter area is very less against the life and quality it ensures to the precision products.
So we recommend always to go for total Passivation.
an ACTIVE deal with |
PASSIVATION |
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