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Plating Stainless Steel

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WE WANT TO ELECTROPLATE ( BRASS / COPPER / NICKEL) ON STAILESS STEEL 202 GRADE. WE HAVE ACTIVATED IT BUT PEELING SEVERE. PLEASE SUGGEST US THE CORRECT PROCESS.

DEVASISH
PRODUCT DESIGNER - KANPUR, U.P, INDIA

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You may have attempted to activate it, but it doesn't sound to me like you were actually successful, Devasish. Did you do Wood's nickel, or what activation procedure did you do? Thanks.

Ted Mooney, P.E. finishing.com Brick, New Jersey

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Thanks Mr. Ted Mooney for you support. The jobs are degreased and pickled in 10% HCl ( C.P) but it is turning Black , then we tried with 5% Concentration and it is O.K. We have Plated it with Wood's Strike Bath. 10% HCl and 140-200Gms/ltr nickel Chloride was used. Almost 80% of the Job is still turning Patchy Matt black. Current was kept at 20- 30ASF. The peeling has reduced but not stopped. But the dull black patches on the Job in the Wood's bath is not fully covered in the subsequent plating.

DEVASISH
- Kanpur, U.P, INDIA

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First of three simultaneous responses -- +++++++

10% HCl for pickling never enough.

John Hu
- Singapore

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Second of three simultaneous responses -- +++++++

You should not have those black patches after the Woods. It should be a light nickel color with a slight brown cast. It sounds like your Woods has a metallic contamination. You have to dummy it at vry low current density overnight. A carbon treatment might also be necessary.

Guillermo Marrufo
Monterrey, NL, Mexico

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Third of three simultaneous responses -- +++++++

hai!
I saw your mail.please do to woods nickel plating propermanner. if you want to plate s.s. material.material should be mild etched by plating bath.so you first apply 1/3 of plating current in reverse. then you apply direct current, do plating.peeloff never happen.
Good luck.

P.KARTHIKEYAN
- Bangalore, India.