Re: Annealing copper was (My Primary Coil disaster)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi Bob,

On 26 Nov 2001, at 8:21, Tesla list wrote:

> Original poster: "Bob Bozarth by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jbdetails-at-prodigy-dot-net>
> 
>     So, is it safe to say that all it takes is heating the copper to anneal
> it? When I was witness to Al being annealed, it needed the carbon or
> something from the acetylene. It was applied to the pipe we were trying to
> use on our hydraulic pipe bender. Some amount of time was required, then a
> neutral flame was applied to the blackened pipe which caused the carbon to
> disappear. It was interesting to watch, and learn a little about how it
> worked. I'm assuming that every type of metal has it's own way

A curburizing flame is normally used for brazing/welding aluminium to 
avoid oxidizing the bare metal surfaces. I wasn't aware that it is a 
requirement for annealing.

Regards,
Malcolm