Removing TCC coating from INC625 substrate
09-30-2008, 05:04 PM,
#1
Removing TCC coating from INC625 substrate
Hi Team,
This is my first posting and really need some advice.

We have applied an Inconel 625 ball and seat set with HVOF coating with Praxair 1350VM (WC-10%Co-4% Cr). The two suppliers we currently use are in the UK and in Italy.

Due to a design modification, we need to remove the TCC coating from 2 metal seats, which we thought would not be an issue as we have never experienced any problems before.
However, the normal chemical removal process used by two of our suppliers in the UK has a severe attack on the Inconel 625 base material, pitting it badly and rendering it un-usable.

The metal seat ring is a good size to work on and having a 12" dia contact area.

Is there a safe way of chemically removing TCC from inconel 625 without pitting the base material or will I have to resort to mechanical means.
If so, does any body have any recommendations on a professional that could look at my problem.

Look forward to help on this matter.
Reply
10-01-2008, 09:41 PM,
#2
RE: Removing TCC coating from INC625 substrate
Hi Mightyatom

Sign0016 to the Surface Engineering Forum.

Do you know what chemical method they used?

This link on the old message board may be relevant: messages/134.html
Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  Appling The WC hard coating on Hard substrate behzadsaberi 3 3,113 04-24-2015, 06:04 AM
Last Post: Vadim Verlotski
  Coating for Epoxy substrate webrits 2 2,857 03-20-2015, 03:09 PM
Last Post: Laurent
  Thermal Barrier Coating Aluminum Substrate for corrosion resistance alaskangrown 4 4,901 03-02-2015, 06:43 PM
Last Post: alaskangrown
  substrate deformation of WC coating in gate valve ehsan 2 4,807 12-14-2010, 09:15 AM
Last Post: Asiaf
  Spraying on Magnesium substrate Madila Awalini 9 7,124 07-05-2010, 04:01 AM
Last Post: Madila Awalini
  Tungsten Carbide HVOF Removing. Kiroga 2 8,715 12-04-2008, 04:03 PM
Last Post: Pete_F
  removing coatings Panf 4 5,866 01-30-2008, 08:00 PM
Last Post: Panf
  Stress in the substrate Vijay Deshpande 1 4,213 06-10-2007, 07:11 AM
Last Post: Gordon
  removing of plasma sprayed coating karunanidhi 4 9,820 11-20-2006, 08:36 AM
Last Post: karunanidhi



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd