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Tool Talk Discussion Forum

Re: Bought a Tig need advice on filler and tungsten

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12-11-2012 01:50:56

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I'd be real interested in hearing how this machine works out of you! I have an Everlast PA-200, has a fantastic arc for SMAW, and GTAW with a Tig rig. I loaned it to a buddy, gee must be a year ago now, and he won't give it back! :lol:
For these inverters I've got to where I just use Ceriated, (orange) on everything. When welding aluminum with 1/8-inch Ceriated I can go up to 300-amps and it won't splinter, and holds a sharp point! With 1/8-inch Lanthanated I had trouble with it splintering.

This post was edited by Puddles at 01:52:46 12/11/12 2 times.

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12-11-2012 10:06:16

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 Re: Bought a Tig need advice on filler and tungsten in reply to Puddles, 12-11-2012 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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12-11-2012 10:16:56

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 Re: Bought a Tig need advice on filler and tungsten in reply to JOB, 12-11-2012 10:06:16  
I own a Miller Dynasty 300, Miller doesn't recommend the use of pure (green) tungsten.
I sharpen the tungsten that way for open root pipe welding.

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12-11-2012 03:55:07

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 Re: Bought a Tig need advice on filler and tungsten in reply to Puddles, 12-11-2012 01:50:56  
One of the moderators over on Welding Web has a very slick way to sharpen tungstens. But caution! Removing the guard on your bench grinder if you have employees, OSHA will take you to the wood shed! :lol:
Place the tungsten in your drill motor, stand on the backside of the bench grinder. You change the angle of the tungsten by lifting or lower the drill motor.

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Bud in WV

12-11-2012 15:36:30

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 Re: Bought a Tig need advice on filler and tungsten in reply to Puddles, 12-11-2012 03:55:07  
Another comment to add to the way you sharpen the tungsten - if you don't have a drill, you still need to sharpen it perpendicular to the grinding wheel. Sharpening tungsten from the back of the wheel tends to eliminate poking the tungsten through your hand occasionally - not as exciting but sometimes boring is a good thing... MANY years ago we were taught that if you grind the point "sideways" the grind marks can interfere with the gas flow but grind marks running with the gas flow minimize the problem. You can count on eating up your grinding wheel, too!

Also, just barely touch the tip of the sharpened tungsten to the wheel to prevent having a small point that breaks off and contaminates your weld. And don't forget to clean your filler rod with emery cloth.

Last comment but shouldn't affect anyone here - tungsten is radioactive. Not enough to worry about - about like granite but if you're welding where they have radiation detectors on the way out and some "friend" slips a piece in your hip pocket you ain't going home till you find it and explain.

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12-11-2012 04:02:00

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 Re: Bought a Tig need advice on filler and tungsten in reply to Puddles, 12-11-2012 03:55:07  
That is exactly how I sharpened my tungsten when I was welding at the Midland, MI and Fermi nukes in the early 80's. I used mostly 1/8 2% thoriated tungsten.

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