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Old 04-29-2006, 06:03 PM   #1
pretty_ricky302
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Aluminum

how do u weld something to Aluminum, i tried soldering stuff but it rolls right off
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Old 04-29-2006, 09:43 PM   #2
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Something like what?
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Old 04-30-2006, 12:33 AM   #3
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you have to tig weld aluminum. also, buy a stainless steel wire brush or stainless ateel wire wheel for a grinder and clean it before hand. Aluminum actually builds a protective skin which is pretty strong (which is the reason it doesnt rust.) this "skin" should come off before welding.
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Old 05-01-2006, 01:56 PM   #4
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i wanted to make a bracket for my cai
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Old 05-01-2006, 02:10 PM   #5
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Quote:
Originally Posted by '93accordse
you have to tig weld aluminum. also, buy a stainless steel wire brush or stainless ateel wire wheel for a grinder and clean it before hand. Aluminum actually builds a protective skin which is pretty strong (which is the reason it doesnt rust.) this "skin" should come off before welding.
Well, it does'nt rust because it's an alloy... And, when welding you have to have the two aluminum surfaces extremely clean, otherwise you will not get good penetration...... You cannot SOLDER aluminum to another metal, aluminum to aluminum yes. Try this stuff, they sell it on eBay too:

www.alumiweld.com
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Old 05-01-2006, 04:17 PM   #6
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Quote:
Originally Posted by '93accordse
you have to tig weld aluminum. also, buy a stainless steel wire brush or stainless ateel wire wheel for a grinder and clean it before hand. Aluminum actually builds a protective skin which is pretty strong (which is the reason it doesnt rust.) this "skin" should come off before welding.
Quite contrary...Tig is prefered, but can be done with mig. This "skin" is actually aluminum oxide and it's not for protection purposes...the reason why you want to clean aluminum really good is because if you allow the "skin" (or aluminum oxide) to remain, you contaminate the weld and highly risk the welds breaking/cracking. To mig weld Aluminum, you'll need 100% pure Argon and aluminum wire...
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Old 05-01-2006, 04:18 PM   #7
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Quote:
Originally Posted by maroonaccord2.2
Well, it does'nt rust because it's an alloy... And, when welding you have to have the two aluminum surfaces extremely clean, otherwise you will not get good penetration...... You cannot SOLDER aluminum to another metal, aluminum to aluminum yes. Try this stuff, they sell it on eBay too:

www.alumiweld.com
Aluminum does rust....it's called Aluminum Oxide, it's the white smooth fine powdery stuff ontop of aluminum.
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Old 05-01-2006, 04:43 PM   #8
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Quote:
Originally Posted by Clueless
Aluminum does rust....it's called Aluminum Oxide, it's the white smooth fine powdery stuff ontop of aluminum.
yup you are right
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Old 05-01-2006, 05:07 PM   #9
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Aluminum does rust....it's called Aluminum Oxide, it's the white smooth fine powdery stuff ontop of aluminum.
Okay, so it OXIDIZES..... 6 of one, half a dozen of the other.
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Old 05-01-2006, 05:09 PM   #10
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actually, i knew it was called aluminum oxide and that it was aluminums form of rust but i broke it down into simplest terms. good call explaining it better. and i was not aware that you could mig aluminum, i only was ever taught to tig aluminum. interesting.
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Old 05-01-2006, 06:25 PM   #11
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Quote:
Originally Posted by '93accordse
actually, i knew it was called aluminum oxide and that it was aluminums form of rust but i broke it down into simplest terms. good call explaining it better. and i was not aware that you could mig aluminum, i only was ever taught to tig aluminum. interesting.
Ahh, I see.... simple=better ....yup, you can mig aluminum(unless I'm mistaken, aluminum has a lower melting point then steel) but I advise against trying to mig aluminum with steel wire(doesn't smell pretty and look nasty).
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Old 05-11-2006, 04:08 PM   #12
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No Clueless, you're not mistaken. Like you said, to MIG aluminum you need 100% Argon and some aluminum wire. And you'll want to turn the amperage and wire-speed down. Speaking of wire, it's best to use a handheld spool gun for aluminum, because it likes to kink up over long distances. ..

2

So what's the word on that AlumiWeld stuff? Has anybody here tried it? Does it actually hold up?
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Old 05-11-2006, 04:36 PM   #13
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Quote:
Originally Posted by DilutedImage
No Clueless, you're not mistaken. Like you said, to MIG aluminum you need 100% Argon and some aluminum wire. And you'll want to turn the amperage and wire-speed down. Speaking of wire, it's best to use a handheld spool gun for aluminum, because it likes to kink up over long distances. ..

2

So what's the word on that AlumiWeld stuff? Has anybody here tried it? Does it actually hold up?
I think I saw some at the truck show down south....seems like solder, but hold aluminum together. Obviously, if this stuff really does work, you probbly can't do thick pieces of aluminum.....
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Old 05-11-2006, 05:09 PM   #14
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WHat about braizing? Anyone else do this?
I braized my first oil return fitting onto my oil pan fitting using copper stick and fitting! Would aluminum be the same ( ie aluminum intake to aluminum bracket)

It is cheap other than the tanks and gas lol!
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Old 05-11-2006, 05:26 PM   #15
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I think it's possible, but the heat range might be too much for the aluminum and liquidify it almost instantently(sp?)
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Old 05-26-2006, 12:01 AM   #16
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You can braze aluminum you just need to use aluminum rods. And they do make rods that are made for brazing aluminum to other metals.
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Old 05-26-2006, 12:08 AM   #17
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Quote:
Originally Posted by Clueless
Aluminum does rust....it's called Aluminum Oxide, it's the white smooth fine powdery stuff ontop of aluminum.
Ya, I'm familiar with oxidation.....
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Old 05-26-2006, 04:37 PM   #18
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Also, you have to lighten the wire drive gear or otherwise it would crush the aluminum wire...
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Old 05-30-2006, 09:57 AM   #19
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Also, you have to lighten the wire drive gear or otherwise it would crush the aluminum wire...
Yup, and when I'm using my Hobart for aluminum..... I have a teflon liner specifically designed for the aluminum wire.
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Old 05-30-2006, 05:20 PM   #20
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Quote:
Originally Posted by maroonaccord2.2
Yup, and when I'm using my Hobart for aluminum..... I have a teflon liner specifically designed for the aluminum wire.
Oh did I forget to mention a change of liner? oopies...
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