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epoxy e-coat thread masking

epoxy e-coat thread masking

epoxy e-coat thread masking

(OP)
I am looking for a suitable material to use for masking the threads of a nut that is welded to a part that is to be epoxy e-coated. We do not want to use a silicon plug to mask the threads, but wish to have a chemical paint release agent applied by the nut manufacturer. The service doing my e-coating is concerned about contaminating their cleaning bath solutions with anything we might use. Is a suitable release agent available?

RE: epoxy e-coat thread masking

Will this also work on threads which are powder coated?

RE: epoxy e-coat thread masking

franklineng,

Are you asking if fluorocarbon thread masking will prevent powder coat adhesion to threaded fasteners?  Yes, it can help prevent this.

RE: epoxy e-coat thread masking

Specificy we have a small part which we manufacture which as a tapped hole. Time and time again, we are receiving this part back from powder coating with paint on the thread. One problem using a protective coating, is the part is hung through the hole as it goes through powedercoating.

RE: epoxy e-coat thread masking

franklineng,

I think your problems are straightforward.  You should contact either of the companies I listed above.  They can help you specify a thread masking compound that can minimize the problems you are having.

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

RE: epoxy e-coat thread masking

Use a conductive mask on your rack which will allow you to rack the part while masking the threaded hole in one operation. They're also re-usable and will take 500F temps.

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