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Old 04-27-2017, 10:11 AM
crystallographic crystallographic is offline
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Default Trouble-shoot this? (AGW)

For you aluminum gas welding (AGW) folks:

I just got this little problem to solve, and thought to give this audience a shot, for practice.

Diagnose the problem shown here, with this weld:

18136267_1558687647507243_222070092_n.jpg
top
18142816_1558687680840573_119433067_n.jpg
root
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Old 04-27-2017, 10:15 AM
Gareth Davies Gareth Davies is offline
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Looks like it was the incorrect filler rod for the job as the weld pool appears full of contamination. If it was a TIG weld, you'd think it had been starved of argon as the weld is that dirty.

How many guesses do we get before you reveal the answer?
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Old 04-27-2017, 10:20 AM
crystallographic crystallographic is offline
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Quote:
Originally Posted by gareth davies View Post
looks like it was the incorrect filler rod for the job as the weld pool appears full of contamination. If it was a tig weld, you'd think it had been starved of argon as the weld is that dirty.

How many guesses do we get before you reveal the answer?

stee-rike one !!
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Old 04-27-2017, 11:22 AM
tom walker tom walker is offline
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I don't know the answer, but i think this is a GOOD idea. Could you give us a little more info, what welding process and filler rod? Thanx for the large, clear images.
Tom
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Old 04-27-2017, 11:44 AM
longyard longyard is offline
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This if fun Kent, and I don't mind looking like a fool.

My guess...bad regulator?
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Old 04-27-2017, 12:53 PM
dwmh dwmh is offline
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Kent, good game, with a serious purpose, I'll guess old flux or mixed with contaminated water.
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Old 04-27-2017, 12:53 PM
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Oxidizing flame?
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Old 04-27-2017, 12:54 PM
bobadame bobadame is offline
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Looks like the flux is contaminated, or the wrong flux.
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Old 04-27-2017, 01:36 PM
Maxakarudy Maxakarudy is offline
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Go on then "dirty gas" acetelyne
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Old 04-27-2017, 01:42 PM
cliffrod cliffrod is offline
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Looks like some of my crappier fast gas welds (usually on old repurposed steel) with too much heat on unclean parts that are too cool to be welded properly and too much filler (because it's easier to melt), with bubbles from the boiling overheated puddle. When the fit-up is not tight,the backside shows a better quality bead than the top, sorta like I achieved ok penetration. But maybe that's not what I'm doing wrong.

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