Stripping solutions for WC-Co
01-08-2010, 06:06 AM,
#1
Stripping solutions for WC-Co
Hi, all,

I have WC-Co coating by HVOF on Inconel 718 substrate parts needs to be stripped.
Could anybody give some advices on strippers which will not harm the substrate? Thanks.

BR,
Ycwbycwb
Reply
01-08-2010, 07:10 PM,
#2
RE: Stripping solutions for WC-Co
Hi Ycwbycwb

First, I would check with your customer/OEM of part if there is a an approved or recommended procedure.

I think there are a few topics previously posted, so may be worth searching forum and archived message board.

Electrolytic method:
20% sodium carbonate
5% tartaric acid
75% water
(not sure whether %weight or %volume)
temperature 70-80 degree C
Stainless steel cathode, coated part anode
current density 4-8 amps/sq in @ 6 volts DC

Chemical/mechanical method:
Various commercial nickel strip solutions may be used to degrade the coating in conjunction with mechanical methods such as gentle grit blasting.

Mechanical methods such as grit blasting or very high pressure water jet blasting may be necessary if chemical or electrolytic methods fail.

What ever method you choose it would be advisable to conduct tests first, to ensure effective coating removal with minimal damage to substrate.
Reply
01-25-2010, 01:17 PM,
#3
RE: Stripping solutions for WC-Co
(01-08-2010, 06:06 AM)ycwbycwb Wrote: Hi, all,

I have WC-Co coating by HVOF on Inconel 718 substrate parts needs to be stripped.
Could anybody give some advices on strippers which will not harm the substrate? Thanks.

BR,
Ycwbycwb

I tried to use high pressure water jet stirpping ,but it's impossible to remove the coating.

So chemicial or mechanicial(grinding) are suggested.

Best Regard!
Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  Coating removal by waterjet stripping ArjunAnnam 2 899 07-18-2024, 04:50 AM
Last Post: ArjunAnnam
  removal or stripping of coatings mountprat 18 38,362 10-26-2022, 04:52 PM
Last Post: bshur24
  Rochelle Salt stripping of WCCo AYoungEngineer 0 3,353 07-18-2019, 12:35 AM
Last Post: AYoungEngineer
  Stripping off from mud rotors velocity 4 3,887 02-21-2019, 05:13 AM
Last Post: demionkrishan
  Coating stripping KevGarty 1 3,751 09-16-2015, 10:26 AM
Last Post: Vadim Verlotski
  Chemical Stripping with Rochelle Salts FWisniewski 0 4,491 02-26-2014, 11:26 PM
Last Post: FWisniewski
  Stripping HVOF Nickel Bound SSC 6 8,186 02-26-2014, 11:24 PM
Last Post: FWisniewski
  Stripping HVOF Nickel Bound SSC 3 5,916 04-01-2013, 11:33 AM
Last Post: SSC
  Chemical Stripping karlos4 2 6,837 07-23-2012, 02:48 AM
Last Post: kschewe
Shy Stripping for Metco 81vf-ns Varela 5 9,806 11-19-2011, 10:43 PM
Last Post: LEN WOOD
  Stripping of Diffusion Al-Si Coating on Superalloy khajeh 2 5,827 12-15-2008, 03:02 PM
Last Post: Steph



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd