annealing hubs

hi, Spanish student, I'm doing work for college on chemical nickel.

I think annealed bands are manufactured in this material would need if someone explains why and how we do to complete and contribute it to my studio.

Internet have not found much information

thank you very much from Spain

Hello David,

Annealing hubs are for multi-wire (Lower amperage, fine wire) in-line drawing machine annealers. See www.westernep.com/pagea.html

Annealing bands and annealing rings are for intermediate and heavy wire in-line annealers where the annealing amperage is relatively high. These are generally made of solid nickel.

As I recall, nickel;annealer bands are used for two reasons:

1) If there is a wire break on the annealer band, there is much less damage to nickel from the electrical arc (pitting) often seen just before the electrical systems shut off.

2) Because of thermal expansion of the copper wire during annealing, the surface speed of the annealing bands is slightly more than the line speed of the copper wire. This allows proper electrical contact to be maintained. Nickel has very good wear characteristics and, over time, became the preferred contact material for annealer bands and hubs.

Thanks for your quick response. Then, it is important the thickness of nickel for wear.. A few microns are usually applied?
Do alternative exists? Are there are some internet manuals?

Thank you very much

Hello again David,

I expanded my first answer so that a bit more information available.

With annealer hubs, I am not clear on the thickness of the nickel plating. Perhaps you can get that information by contacting the above company directly.

As far as annealer bands and rings are concerned, the only metals I have ever seen are copper, DLP copper and nickel.