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Tungsten electrode resistance (was Coil Meeting...)
To further split hairs, I believe the difference in resistivity between
tungsten and anything else in an RSG electrode is totally insignificant.
The IR losses through a 1/8" diameter by 1" length of any metal will be
nothing compared with the heating generated by the arcing.
Waltham, MA USA
From: Tesla List [mailto:tesla-at-pupman-dot-com]
Sent: Tuesday, June 29, 1999 7:28 AM
Subject: Re: Coil Meeting...
Original Poster: Chip Atkinson <chip-at-pupman-dot-com>
Just to split hairs, the welding rods are tungsten _metal_,
carbide. The welding rods are for TIG welding and have to
electricity through them so that an arc can be created
workpiece and the welding torch.
--- If I can't fix it, I can fix it so it can't be fixed --
On Mon, 28 Jun 1999, Tesla List wrote:
> Original Poster: Finn Hammer <f-hammer-at-post5.tele.dk>
> Tesla List skrev:
> > Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
> > I wonder if the tungsten has a higher resistance that
> > extra heating?
> I asked the chief metallurgist at "Danit", a danish sinter
> factory, about this recently, He said the conductivity of
> carbides is in the range of 1/10 to that of copper.
> I take that as an argument for brazing short pieces of the
> to copper sticks, and then have them machined afterwards.
> Cheers, Finn
> A very big snip :-)
> > Terry