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Tool Talk Discussion Board

Re: Bought a Tig need advice on filler and tungsten


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Posted by JOB on December 11, 2012 at 10:06:16 from (173.84.196.139):

In Reply to: Re: Bought a Tig need advice on filler and tungsten posted by Puddles on December 11, 2012 at 01:50:56:

Do the inverter Tig machines have a different
procedure for welding than the machines that are
not inverters? The sharpened tungsten you have
pictured has a very long taper on it, is that the recommended method for the inverters? Zirconiated
(brown) tungsten would seem to be the better
tungsten choice for high amperage aluminum.
I found this on ceriated tungsten that might be of
interest to you.
The only tungsten that I ever used was the Green
and red. So this is all new to me also

Ceriated (Color Code: Orange)
Ceriated tungsten electrodes (AWS classification
EWCe-2) contain a minimum of 97.30 percent
tungsten and 1.80 to 2.20 percent cerium and are
referred to as 2 percent ceriated. These
electrodes perform best in DC welding at low
current settings but can be used proficiently in
AC processes. With its excellent arc starts at low
amperages, ceriated tungsten has become popular in
such applications as orbital tube and pipe
fabricating, thin sheet metal work, and jobs
involving small and delicate parts. Like thorium,
it is best used to weld carbon steel, stainless
steel, nickel alloys, and titanium, and in some
cases it can replace 2 percent thoriated
electrodes. Ceriated tungsten has slightly
different electrical characteristics than thorium,
but most welders can't tell the difference.
Using ceriated electrodes at higher amperages is
not recommended because higher amperages cause the
oxides to migrate quickly to the heat at the tip,
removing the oxide content and nullifying its
process benefits.


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