The answer is yes because you can adjust the machine so it will not melt the pure like a cheap candle. For what its worth and this is just my opinion, if you like and only want to use a balled tungsten get a Syncrowave. The Dynasty machines are not designed to use pure tungsten with AC. I can't stand using a balled tungsten on aluminum anymore! 2% lanthanated is what I use on everything with my Dynasty. I can keep a nice sharp point on any material I weld on. The Dynasty allows me to adjust to any and every condition I have ever come across. I would never consider a transformer type machine because they are too big, use too much power and they just don't have the versatility of a Dynasty IMO. I do a lot of thick material to thin tubing in aluminum. Being able to stomp on the pedal and keep a sharp point with absolutely no wondering arc at all is what I love about the machine.
By Lawrence
Date 03-08-2013 06:26
Edited 03-08-2013 06:40
Pure tungsten electrodes should have been taken off the market 20 years ago.
They have ZERO benefit above any other type of electrode for any GTAW application.
Throw them away... Do not spend another dime on pure tungsten electrodes.
Low melt point... Poor emitter... Bad bad bad...
The difference between a 10 pack of Pure and a pack of Lanthanum or Cerium electrodes? A couple bucks
What I don't understand is why the Vendors still sell the stupid things.
I have Dynastys, Aerowaves, Synchrowaves and Powerwaves.... Transformer... Inverter... For all of them I prep my tungsten electrode with a pointed end for AC operations on aluminum...
Why Lar... you ask...."Why Lar can you do this with $7,000 inverters and also Synchrowave transformers??? Well I'm glad you asked... 90% of production work on aluminum with AC current done with inverters is produced with AC balence that could be obtained by a Synchrowave.
With a water cooled torch there is NO NEED TO BALL A TUNGSTEN
If you are spending $7,000 Dollars for a Dynasty 350.... Why not spend $150 on a water cooled torch and a tungsten thats worth a ****?
Boeing's Aluminum tubing shop uses friggin Thoriated tungstens for ALL of there work, which is all 100% X-ray... All pointed... They just don't overheat their electrodes..... It's really that simple.
::::::::::Drops microphone and exits the building
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Haha, I almost prefaced my post with "Please don't tell me pure isn't a good choice on an advanced featured inverter" as I didn't just fall off the turnip truck, and I KNEW someone would want to helpfully correct me.
I currently have Sync 250, Precision TIG 375, Dynasty 300, Dynasty 700, and Lincoln Invertec V311s, and have time on the Aerowave and several other TIG power sources. Not new to TIG welding, variable output frequency, exteneded balance control, pulsed welding, asymmetric wave forms, or alloyed tungstens. I use all the common alloys every day: La, Ce, Th, and pure, including AC use of La and Ce in circumstances where they provide a meaningful benefit.
My Lincoln inverters will light a pure on AC with no problem at all.
I prefer pure with relatively low amperage on modest aluminum thickness (3/32 - 3/16) when I want good arc stability and I don't want to listen to the buzz of a fast AC output cycle. I also like the tip never erroding in shape to were it needs to be redressed.
Thanks so far, but I would still like to know if anyone can answer my question. I have no plans to change my ways!