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rotary electrodes (fwd)
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From: FutureT-at-aol-dot-com [SMTP:FutureT-at-aol-dot-com]
Sent: Sunday, August 09, 1998 10:59 PM
To: tesla-at-pupman-dot-com
Subject: Re: rotary electrodes (fwd)
In a message dated 98-08-08 21:46:14 EDT, you write:
<< ---------- Forwarded message ----------
> Date: Sat, 8 Aug 1998 21:33:50 EDT
> From: Teslaman-at-aol-dot-com
> To: tesla-at-pupman-dot-com
> Subject: rotary electrodes
> All...
> I need some opinions out there on what type of electrodes to use on an
> upcoming rotary. It consists of a 3450 R.P.M. induction motor spinning a
12"
> aluminum disk with a phenolic center for electrical isolation. The power
> handling will be in the 10+ kW range and the stationary electrodes will be
> 3/8" tungsten tipped, but any ideas on what to use for the 10 spinning
> electrodes other than tungsten? Thought about 3/8 to 1/2" dia. brass rod,
> any suggestions?
> Thanks
> Kevin E.
>>
Hi Kevin,
Other than tungsten, I've heard that copper was pretty good, but I've
never tried it. I'm using brass now on my 12 point series quench
rotary, but the brass develops a pebbly surface, and seems to
ablate rather quickly, even at rather low power levels.
Regards,
John Freau