Interesting, thanks Carl. It looks like there is a product marketed
under the name "Elkonite"; the various grades are mentioned here:
http://www.cmwinc.com/welding-materials.php
And here is a company that sells some of it, along with tungsten, in
varying diameters of round bars, in 8" sections:
http://www.spotweldingconsultants.com/tungsten.html
No idea on pricing for those materials, though, but I like the idea of
a more easily machinable electrode with the wear characteristics of W.
Jon
Carl Noggle wrote:
If you do a Google search on "copper tungsten alloy" you will get
mondo pages for mfgs. I don't remember where I got mine. You only
need to
cut off about 1/2 inch to make the actual electrodes, then press them
onto threaded brass tubing to adjust the gap.
Carl Noggle wrote:
You can get alloys of copper and tungsten, in the range of 10% to
20% copper, which machine almost as well as free-machining brass.
They perform as well as pure W. My main gap has two hollow
electrodes made from 1 1/4 diameter stock with a 1/2 inch hole for
forced air (blowing radially inward). After about 20 years of use,
I can't see any sign of wear. Actually, brass does quite well also.
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