pschranz

Topic: Teflon Powder Coating Inside Of Tube


Is it possible to teflon powder coat the inside of a tube with a consistent thickness around the inside diameter?


We have a sliding application that requires an increase in lubricity.  The shop we are dealing with does Teflon spraying.  They are saying it is not possible to spray and maintain a consistent thickness inside the tube.  The consistent thickness is required due to internal bushings that slide along the tube.


The tube ID is 0.875".  The tube material is 6061-T6.


Can anyone suggest a teflon powder coating shop on the west coast that can manage this requirement?


Regards,
Paul


DustinGebhardt

Re: Teflon Powder Coating Inside Of Tube

Your process sounds difficult, to be sure.  I would start calling around.  I dealt with Specialized Coatings in Huntington Beach, but I'm not sure if they can meet your requirement. 


Have you considered something like electroless nickel plating or tin plating?

-Dustin Gebhardt,
CEF
Plating Engineer
Danaher Tool Group
Gastonia, NC

Ira Donovan

Re: Teflon Powder Coating Inside Of Tube

You could consider teflon impregnated hard anodize.  It is commonly used in wear resistant lubricity applications.

Ira Donovan's Website

pschranz

Re: Teflon Powder Coating Inside Of Tube


Thanks for the responses.


We have tried Teflon impregnation on hard coat, and did not notice a substantial improvement in lubricity.


I was thinking Teflon electrostatic powder coating.  I understand that electrostatic powder coating allows spraying from one side of an object, while simultaneously coating the backside due to the electrostatic charge.


Perhaps this could work for the inside of the tube as well.


Any comments on this idea?