Join Date: Nov 2000
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Re: Ox/Ace Welding Aluminum
Some of the older gas welding handbooks cover gas welding aluminum. There is a flux that makes it easier. There are rods, or you can use a strip of the base material, or nothing at all and just fuse the perfectly fit joint (for example on the edges of a gas tank. Apparently gas welded aluminum is nice and soft, so that should make it strong. Also, I seem to recall them saying that you adjust the torch for a slightly carbonizing flame, instead of neutral. I have a book around here that describes it. Might have been an HP book on gas welding. Also, using special gas welding goggles as the flame gives off a bright weird color. Do you have access to HP's Metal Fabricator's Handbook by Ron Fournier? Excellant book. I think he might have had a section on that subject.
By the way, if your torch tip pops, that means you are using too little gas flow for the tip size. Go down a tip size and increase the flow, it wont be as likely to get extinguished by a spark and reignite with a pop. Gas welds should be as pretty as tig as you have total control over heat and additiona of filler.
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