#1
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TIG tacking aluminum
I could use a few tips on how to TIG tack .050 aluminum but welds.
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Tim Freeman |
#2
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At the 2017(?) Redneck Roundup, PatMan showed a couple of us how to do this by sliding the tungsten up into the cup to establish our arc length, setting/standing torch directly on the metal, giving the pedal a short on/off step and leaving the cup-torch in place until the weld cooled. We practiced our setup on a solid piece and then did a few on a butt joint.
There's other ways but this is pretty simple and consistent.
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AC Button II http://CarolinaSculptureStudio.com https://www.youtube.com/channel/UCzSYaYdis55gE-vqifzjA6A Carolina Sculpture Studio Channel |
#3
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I find tacking without a tab of rod produces weak tacks that crack easy, so I dab a little rod, 1/16th
I rest the cup on the joint at angle, tungsten about 2mm off the panel, press the pedal full power at 50-60 amps, this puddles the joint, then dab. The joint has to be touching or it will burn away creating a hole. I'm sure there a lots different techniques, but this works for me
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Cheers Martin No matter how clever you think you are, stupidity is always one step ahead!!!! |
#4
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Hi, it is always interesting to see the different ways that people do something, but all end with the same results. With .050" aluminum I would set the current around 50amps-ish. Start the arc, but with out melting any material. Once you can see what you are doing, continue to roll on pedal until you can see both panel edges melt. If one melts more than the other, adjust your torch position until the melt is equal. Roll on more pedal and add rod until it is tacked. The above process seems like it would take long, but I can move fast along a panel. By slowing down and practice understanding what is happenings, you can tack with the best of us, in no time. Bill
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Bill Tromblay "A sign of a good machinist, is one who can fix his F$@& Ups" My mentor and friend, Gil Zietz Micro Metric Machine. Last edited by BTromblay; 08-08-2018 at 09:56 PM. |
#5
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Quote:
I think you mean "TIG-tacking, no peek, no filler, on aluminum" ?? If so, I showed this on a video / dvd back in 1995 - I'll post this process in a new thread ...
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
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