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Corrosion on electroplating racks with stainless spring steel contacts

adv.

January 25, 2022

Q. Greetings!

Our company produces racks for almost all kinds of electroplating procedures with plastisol coating.

Today, one of our costumers stated the racks started to get rusty right where the plastisol ends on the stainless spring steel.

This company is a nickel-chrome plant and uses its own stripping for racks (contains sulfuric acid as I know).

We did not change the spring steel, and the rust appears only on a few racks.
Do you have any ideas what could be the source of the rust?
(I know it is little information but that's all I can tell you.)

Thank You!
Vilmos

Vilmos H.
- Zirc, Hungary

A. Hi Vilmos. The likelihood is probably that your customer did something wrong, like leaving racks in stripping solution overnight, exposing them to nitric acid, etc. But still it is possible that the stainless you used on some or all of this order was not to spec.

I think both of you have little choice but for you to build them another rack and have them return the worst one so you can do further investigation.

Luck & Regards,

Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
January 2022

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