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How Daubert
Cromwell®
Products Work
The term "VCI"
stands for Volatile
Corrosion Inhibitor. |
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Metal Forming magazine hails "No Rust" packaging
The chemicals in Daubert Cromwell products are volatile. When metals are wrapped
or packaged in VCI, the chemicals volatilize in the packaging environment,
forming a protective molecular layer on the surface of the metal. This
protective layer serves as a barrier, preventing moisture, salt, dirt,
oxygen, and other corrosion causing materials from depositing directly
on the metal and causing rust and corrosion.
How VCI Works
Corrosion inhibitor compounds vaporize from the paper or film. They
are attracted to the charged surface of the metal by virtue of their
polar orientation.
The VCI molecules align on the surface of the metal to a depth
of 3 to 5 molecules. This layer of molecules passivates the charged
surface and creates a barrier that prevents oxidation. The corrosion
cell (the flow of electrons in the metal and the flow of ions in
the electrolytic surface layer) is unable to establish itself. Corrosion
is halted.
Airtight packing is not required!
Simply store or ship metal parts in VCI packaging. When the parts
are unwrapped, the protective layer immediately begins to dissipate.
The metal parts are clean, corrosion-free and ready to use. No washing,
dipping or cleaning is necessary.
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The VCI molecules migrate into recesses
and hard to reach areas on even the most complex shapes. The molecules
build up on the metal surface until a continuous barrier has formed
on the metal part.
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Protect your parts... protect your quality...
with Daubert Cromwell products.
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