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aluminum bronze

Posted: Thu Jun 05, 2014 3:17 pm
by chubbysautocenter
01ab683ea506fb6bd7dc3d81dc1cced8717e65b47b.jpg
01ab683ea506fb6bd7dc3d81dc1cced8717e65b47b.jpg (59.19 KiB) Viewed 569 times
this is tig welded in ac on mild steel. the bead looks very bad. is this the best it gets?

Re: aluminum bronze

Posted: Thu Jun 05, 2014 6:05 pm
by Otto Nobedder
Nope. I've seen them almost indistiguishable from a weld.

Patience, practice, CLEAN X 3, and more patience.

I can't advise you on the "how", though. Brazing is one place I'm still an oxy-fuel/flux fan, but my stuff does not have to look good, only meet liquid oxygen service requirements under pressure. I frequently repair joints that were previously TIG-brazed, because they don't hold up to the thermal cycles.

Steve S

Re: aluminum bronze

Posted: Thu Jun 05, 2014 6:25 pm
by chubbysautocenter
Otto Nobedder wrote:Nope. I've seen them almost indistiguishable from a weld.

Patience, practice, CLEAN X 3, and more patience.

I can't advise you on the "how", though. Brazing is one place I'm still an oxy-fuel/flux fan, but my stuff does not have to look good, only meet liquid oxygen service requirements under pressure. I frequently repair joints that were previously TIG-brazed, because they don't hold up to the thermal cycles.

Steve S
I finally posted a pic. but I keep referring back to the lamp post video. I just don't see how my bead looks that bad. when I go back to dc and use silicon bronze it perfect. this ac deal and aluminum bronze thing just kills me.

Re: aluminum bronze

Posted: Thu Jun 05, 2014 7:05 pm
by Oscar
get a piece of scotch brite pad and wipe down the filler real good, then wipe it down with acetone. You'll be suprised how much crud comes off it. ;)

Re: aluminum bronze

Posted: Thu Jun 05, 2014 7:22 pm
by chubbysautocenter
Oscar wrote:get a piece of scotch brite pad and wipe down the filler real good, then wipe it down with acetone. You'll be suprised how much crud comes of it. ;)
scotch pad.. ok thanks :D