Re: [FWDLK] Zinc coating

[Joseph Bouboulis <Joseph_Bouboulis@xxxxxxxxxxxxx>]

Zinc coating is actually what most of the OEM manufacturers do. The Zinc is
more reactive with oxygen so it oxidizes instead of the steel and forms a
zinc oxide coating. Since it is already oxidized it is unreactive with
oxygen and therefore will not rust. And if it is scratched can actually
"grow" into the scratch to prevent it from rusting. It is basically a form
of "galvanizing". Any process in which a metal is coated on the surface of
another metal to prevent corrosion is called galvanizing. You will need to
talk to a body man to find out what primers are good for a zinc galvanized
panel.

With powder coating they actually electrostatically charge the part and
spray "plastic" dust at it. The dust electrostatically bonds to the metal
and then they bake it on.



                    Vincent Van Humbeeck
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                    ANADOO.FR>                    cc:
                    Sent by: Forward Look         Subject:     [FWDLK] Zinc coating
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                    03/20/02 01:19 AM
                    Please respond to
                    Vincent Van Humbeeck






Hi,

Last friday, I went to see a local shop doing media-blasting (actually,
mainly based on aluminum oxyde). The guy does also zinc coating and powder
painting (done in an oven, I'm not sure what it's called in english).
Powder
painting is ideal for frames but his oven is too small for my 194"1/8
Plymouth frame !

Anyway, I was really impressed by what he showed me about zinc coating. He
already did several complete bodies for car restorations, but mainly little
popular french cars. He claims that zinc coating the body is as close as it
can get to having a stainless steel body. He leaves a 50 microns (around 2
thousandth of an inch) layer of zinc on the body which has a sandpaper-like
rugosity. He claims primer sticks very well to that layer of zinc.

Anyone been down that road before ?

Vincent Van Humbeeck (France, 120 miles north of Paris)
'58 Plymouth Belvedere Sport Coupe

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Calendars are still available.  Don't miss the chance to get yours now!
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