Passivation is a process which uses a nitric acid solution to remove iron from the surface of stainless steel. This treatment leads to a protective chromium oxide passive layer, or passivation film, that is less likely to chemically react with air and cause corrosion.
Copper & Brass Bright Dipping
is a two step immersion process used to clean and remove oil and dirt
residue and surface corrosion or tarnishing from solid brass or
copper parts. The process is often used as a pretreatment to painting or followed
by a clear coat in order to prevent future tarnishing. The copper and brass parts must first be thoroughly cleaned to remove all
surface oils and grime that are present. Any oil present will cause the bright dipping process to be uneven. The second step of the
process involves a very strong acid dip to remove the corrosion and brighten the brass
or copper. The timing of this step is critical as too
little will result in an uneven finish and too much will result in removal of too much metal from the parts.
A tarnish inhibitor is applied which will provide short-term protection until your next operation.
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