Where the
world gathers for metal finishing
Q&As since 1989


-----

What's the proper anode hook material for Woods nickel?

Metal Finishing Trivia: What is the proper anode hook material for a Woods nickel strike?

Chuck Kacmarcik
Metal Finishing Facilty - Tulsa, Oklahoma
2004

I used 316 SS for its superior corrosion resistance. 304 would work well also. If you are worried about the poor electrical conductivity of SS, you could have a heavy nickel plate put on the non threaded areas of steel hooks or brass if you can find them or make them. Conductivity of SS hooks is not that much of a problem in many shops because the high electrical load is only on for a relatively short period of time and then is off for a rather long period which allows the hook to cool off. The higher the temperature of a conductor, the more resistance it has so generates even more heat.

James Watts
- Navarre, Florida
2004

I have used stainless steel but my choice is a welded heavy rod of pure 99.9% nickel. It can be found at a supply of argon welding rods. Depending on the weight of your anode several 1/8" rods can be twisted and argon welded to the anode. Nickel is better because it will not contaminate the solution. Obviously, you are not supposed to keep immersed any of these hooks or you might end with a perforation in your tank caused by a dropped anode.

Guillermo Marrufo
Monterrey, NL, Mexico
2004

Thank you, we have lost several anodes due to improper hook material. We shall purchase 316 SS and nickel plate the hook. ck

Chuck Kacmarcik
Metal Finishing Facilty - Tulsa, Oklahoma USA
2004