×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Removal of Cured Powder Paint

Removal of Cured Powder Paint

Removal of Cured Powder Paint

(OP)
Does anyone know of a solvent that would removed cured power paint.  We have a set of cooling coils that are covered.  The manufacture recommends new coils. Just making sure there is not something out there that would work without having to do a cut and replace.

Thanks,
Cervantis  

RE: Removal of Cured Powder Paint

What size is your coil?

 
  

RE: Removal of Cured Powder Paint

(OP)
Appx. 28"x56". Not for sure about the thickness.  Would have to take the top off the unit to measure it.

Cervantis

RE: Removal of Cured Powder Paint

Here are two possibilities; if the coils are not Aluminum one option is to find a furniture refinisher with a tank large enough for the coil.  The coil can be rotated to strip the coating piecemeal.  If the refinisher uses  a solvent base stripper he maybe able to clean Al.

If the coils are steel the second is to find a motor rewinding facility that has a burn off oven.  If the oven is large enough he can take the coating off all at one time.

Do you have any idea what the coating material is?

RE: Removal of Cured Powder Paint

(OP)
The coils are aluminum we think, may be copper, who knows.  The powder paint is industrial, and this cooler is located near the paint booth area.  The ideas you shared will help.  Acetone does not work.  Methelyne Cholide did not do anything but take the "sheen" off of the surface.  But I like the idea of taking it off, and soaking it or cooking it.  We thought about a high pressure washer, but changed our minds because of the bending of the metal or the holes it would create.  

I will pass your thoughts along, and please accept my kindest thanks and appreciation for your input and time.


Best,

Cervantis     

RE: Removal of Cured Powder Paint

Hi, Cervantis.
As UncleSyd shared, heat destruction may be feasible.  Though you'd need to restrict your oven bake to less than 375-400F, given the risk of aluminum annealing.  You would then have to follow up with a very light oxide blast, some form of mechanical cleaning that avoids distortion.  Do you what the powder coat is?  Phenolics, for example, can be thermally stable to 400F, while epoxies resist heat to about 350F.  Urethane, though, is much lower in heat stability; nylon, much higher.  Your coil manufacturer may be right, Cervantis.  If you feel the coating failed prematurely, I'd be pleased to review your situation in more detail.  
Best wishes.    

William Gunnar
http://www.IndustrialCoatingsWorld.com
 

RE: Removal of Cured Powder Paint

(OP)
Sorry I have not gotten back.  I got pulled into another project on UV paint fading issues on aluminum.

I will check with our supplier who can answer the question.  I think however that our plant manager has bitten the bullet and is going to cut and replace, and move forward.


John T. Davis  

RE: Removal of Cured Powder Paint

If you find a dip tank it might pay off later to test the one bing replaced.  

RE: Removal of Cured Powder Paint

(OP)
Good Suggestion.  Thanks.

RE: Removal of Cured Powder Paint

(OP)
Great Suggestion.  Plus I like the INDUSTRIAL COATINGS website also.  Thanks for your help.  The peelaway is also a great option on a home that I have.  I have to fix a bad contractor paint job that I was done a couple of years ago on one of my homes. I have not heard anymore noise on the coils.  They must have found a solution.  

Best,

Cervantis    

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close