Tig welding tips, questions, equipment, applications, instructions, techniques, tig welding machines, troubleshooting tig welding process
artfusionfab
- artfusionfab
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I am butt welding 1/8 X 6/6 aluminum tubes. The welds looked perfect until I ground the weld off. It had gas bubbles down the length of the seam. why? By the way, I'm not beveling the aluminum, I'm using 20 pounds of argon with a 1/8 inch tungsten.
- weldin mike 27
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Joined:Fri Apr 01, 2011 10:59 pm
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Location:Australia; Victoria
Hi there,
Its got to with the oxide on the aluminium. Use a stainless steel wire brush to clean tbe weld area right before welding and the acetone wipe. (dont set fireto the acetone.) clean the filler with scoth brite or ss wool and wipe with acetone rag. see how that goes.
Mick
Its got to with the oxide on the aluminium. Use a stainless steel wire brush to clean tbe weld area right before welding and the acetone wipe. (dont set fireto the acetone.) clean the filler with scoth brite or ss wool and wipe with acetone rag. see how that goes.
Mick
- weldin mike 27
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ajlskater1
- ajlskater1
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Sounds like you are working with some dirty material. Just use some solvent (break cleaner works) and clean the material. You shouldn't have to wire brush or clean the filler unless its been laying of the floor getting stepped on and that times to much time. And btw I would recommend putting a bevel on the tubing if the weld is going to be ground off. Butt welds on that thick of aluminum that get ground off have a tendancy to crack. The shop I work at does a lot of that kind of jobs and everything gets beveled.
- weldin mike 27
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Hey,
Just watch out for that brake cleaner, it can be NASTY NASTY SHIT. When welding is involed. Google it and welding.
Mick
Just watch out for that brake cleaner, it can be NASTY NASTY SHIT. When welding is involed. Google it and welding.
Mick
ajlskater1
- ajlskater1
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wow never knew about that brake cleaner being bad. I only use it in a pinch a home, but won't being doing that anymore. Scrap that brake cleaner reference use acetone.
- weldin mike 27
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Hi there,
Good to hear, There must be all sorts of nasty stuff out there that we dont know about till its too late.
Mick
Good to hear, There must be all sorts of nasty stuff out there that we dont know about till its too late.
Mick
ajlskater1
- ajlskater1
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Ya makes you wonder. Thanks for bringing up that brake cleaner was bad. Like I said have only used in a pinch, didn't mean to give bad advise. I wonder if the stuff at my work I use to clean the aluminum is bad. I know that if I don't run the exhaust sytem, the smell makes you feel like crap.
- weldin mike 27
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Hey,
Check to see if you can find the Material Safety Data Sheet, MSDS. Every substance should have one, contact the manufacturer, they will be able to send you one. It will map out any particular safety precautions to follow. if your employer wont help, theres nothing wrong with a little after hours research. Good luck.
Mick
Check to see if you can find the Material Safety Data Sheet, MSDS. Every substance should have one, contact the manufacturer, they will be able to send you one. It will map out any particular safety precautions to follow. if your employer wont help, theres nothing wrong with a little after hours research. Good luck.
Mick
artfusionfab
- artfusionfab
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Thanks guys for your input,I beveled the material and it worked fine.ajlskater1 wrote:Sounds like you are working with some dirty material. Just use some solvent (break cleaner works) and clean the material. You shouldn't have to wire brush or clean the filler unless its been laying of the floor getting stepped on and that times to much time. And btw I would recommend putting a bevel on the tubing if the weld is going to be ground off. Butt welds on that thick of aluminum that get ground off have a tendancy to crack. The shop I work at does a lot of that kind of jobs and everything gets beveled.
ajlskater1
- ajlskater1
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ajlskater1
- ajlskater1
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