John,
I have had problems in areas like Japan with high moisture
environments. The parts corroded very quickly, months, and the customer wasn't
real happy with us. The problem with pre-plating is that the punching and
cutting process exposes raw un protected surfaces and the corrosion starts at
those points and works its way under the pre-plate. Theory says that as the
material is punched the coating is suppose to be transferred by wiping action
to the newly exposed edges by the punching die. Doesn't seem to work given my
experiences with it.
Gary
-----Original Message-----
From: Crabb, John [mailto:[email protected]]
Sent: Wednesday, October 02, 2002 8:34 AM
To: [email protected]
Subject: Use of "pre-plated" steel.
Has anyone encountered problems in the use of
"pre-plated" sheet steel in IT equipment metalwork ?
Typically such material is cheaper to use than
having to plate parts after they have been produced,
but there may be issues with sharp edges produced
when the material is punched out, and with rust on
the edges which are not protected.
Regards,
John Crabb, Development Excellence (Product Safety) ,
NCR Financial Solutions Group Ltd., Discovery Centre,
3 Fulton Road, Dundee, Scotland, DD2 4SW
E-Mail :[email protected]
Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243.
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