The authoritative public forum
  for Metal Finishing 1989-2025
  

  -----

Troubleshooting Ideas for a Variety of Finishing Processes

2001

Our Company is offering the following Electro-plating services such as Passivation, Barrel Polishing, Electroless Nickel Plating for aluminum, brass and steel, Electro-Deposition for aluminum and steel, Chromating, annealing, Copper Nickel Barrel Plating and so on.

I want is to provide me information on how to prevent the following problem:

1. Brown Stain

2. No Coat

3. Deformation

4. Dull Appearance

5. White Stain

6. Rust

7. Lot Mixing

Dhon Erot
- Laguna, Philippines

---

2005

Hi there,

I am having the same problems with my plating processes, especially white stain. Have you came up with the solution to prevent this issue from happening?

Best regards,

Charn
- Melbourne, Australia

---

(Full name next time, please, Charn; this isn't an anonymous service). Plating is very complex, and it would take a whole finishing library to describe the most likely causes for a wide variety of defects across a number of finishing processes. But Larry Durney's "Trouble In Your Tank" is perhaps the shortest route to those answers. Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2005