Powdercoating Problems and Questions

Richard Beels beels at technologist.com
Fri Jun 29 16:38:20 EDT 2001

Jay has mixed up powdercoating and anodizing.

PCing works as you say, Avi.  Anodizing works as Jay describes PCing.

You take an aluminum object, place it in a sulfuric acid solution, apply a 
charge to it and let it cook.  If you want to color it, you give it a hot 
bath in anodizing dye and then boiling water.  Of course, it's a little 
more complex than this but I'm sure there are dozens of websites with 
detailed instructions....

At 11:12 6/29/2001,  Avi Meron was inspired to say:
>Brother Jay,
>I did a lot of powder coating in my life, for all kinds of
>The only reason powder coating uses an electrical charge is to keep the
>powder, fine plastic ground "to flower like substance" is to hold the
>material on the part!  The baking of the plastic is what keeps it on the
>part!!!!!!!!!!!!!!!!!!!  If you could hold the powder on the part with any
>other means, it would still work the same exact way!!!!!!!!!!!!!!!!!
>It does not bond to the part in any other way.  The electrical charge is
>there only to allow it to stay till it's baked!  There is NO chemical
>reaction in any way.....................why would there be?...............
>As you know, "plastic" is heat sensitive and can burn and peel, so what's
>there to stop it from doing it if the heat is really great? Your PC parts
>don't see the heat our engines do.............agree? So it become one, it is
>just bonded to the part in most aggressive way, melted on!  There is NO
>other magic involved!
>Take care,
>-----Original Message-----
>From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
>Behalf Of JAYTRES at aol.com
>Sent: Friday, June 29, 2001 6:45 AM
>To: quattro at audifans.com
>Subject: Re: Powdercoating Problems and Questions
>In a message dated 6/29/01 5:23:03 AM Eastern Daylight Time,
>tquattroguy at yahoo.com writes:
><<  It SHOULDN't Come
>  loose, but could >>
>Todd- I just went to China/Taiwan to learn about powdercoating and anodizing
>last week and from what I learned, powdercoating if done right should
>definitely not come loose. The reason for this is because powdercoating is
>electronically embedded into the material with positive and negative
>and is not a surface paint. It actually becomes one. We then took some
>recently PC parts and banged them as hard as we could against the cement
>floor, and never saw any flaking of any.
>HTH, Jay Desmarais 1990 200TQ


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