Letter 3397

Stripping of anodic coatings 

-

I'm interested to see what the industry is using for the removal/stripping of anodic coatings. We are currently using a caustic etch solution and are looking for a NON-ETCH strip solution. If you have any experience with a particular product your comments and recommendations would be appreciated

Tim Martin
plating shop - Springfield, MA

-

If stripping anodize coatings from aluminum the following solution can be used:

  • 3.5 %/vol phosphoric acid
  • 2.0 %/wt chromic acid
  • Remaining D.I. water

Bring to boil and strip for 3 - 5 minutes. This solution will strip the anodize coating but will not etch the aluminum substrate.

Greg Haataja
helicopters - Fort Worth, Texas

.

I have a client using a solution of ~ 3.5% Phosphoric acid and ~ 2.0 Chromic acid to strip anodized materials. It works fine. The problem is the rock like solids that build up on the walls of the strip tank. Short of using a jack- hammer he is unable to remove the material. Do you have any suggestions for cleaning out this strip tank?


Art Kushner
Kushner Electroplating School

Anaheim, California

Dear reader

Post an answer
 
Post a question
 
Report broken links

Legal disclaimer boilerplate button

List of Directories
Jobshops Directory button Environmental Directory button Equipment Directory button Consultants Directory button Chemicals Directory button Test Directory button Help-Wanted Directory button About Advertising button Classifieds Directory button Booklist button

 

Link to Del.icio.us button Save This Page (why?)    -    Home    -    ©1995-2009 finishing.com