RE: Sync motor

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

Original poster: "David Kyle by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dave-at-kyleusa-dot-com>

Types of Tungsten welding rod:
 

1.) 2% Thoriated, AWS Class EWTH-2, DC welding applications. The most
common type of electrode used today. Applications: carbon & stainless
steel, nickel alloys and titanium. Color code Red

2.) 1% Zirconiated, AC Welding applications. Better start up than Pure
Tungsten, Balls up well and has a more stable arc than Pure Tungsten.
Better current carrying capacity and high resistance to contamination
during welding. Color code White

3.) Pure Tungsten, AWS Class EWP, AC welding applications. Lease
expensive of all electrodes. Applications: aluminum and magnesium
alloys. Color code Green

4.) 1.5%, 2% Lanthanated, AWS Class EWLA-1.5, AC & DC welding
applications. Non-Radioactive Good arc characteristics in ac/dc
applications. Applications: carbon & stainless steel,nickel alloys and
titanium. Color code Black

=========================================
Dave Kyle
Austin, TX USA
Email: dave-at-kyleusa-dot-com


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com] 
Sent: Monday, February 18, 2002 6:30 PM
To: tesla-at-pupman-dot-com
Subject: Re: Sync motor

Original poster: "Peter Lawrence by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <Peter.Lawrence-at-Sun-dot-com>

Guys,
     welding shops sell tungsten rods, sometimes they will even sell one
at
at time, but the one I go to only sells 10-packs now.

Peter Lawrence.

(PS, don't get Thoriated, you don't want radioactive stuff getting
vaporized
into your atmosphere by your spark gap, I would only use pure tungsten).