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Pepper On Rig Aluminum Welds?

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Pepper On Rig Aluminum Welds?

Postby rahtreelimbs » Fri Apr 14, 2017 8:51 pm

When tig welding aluminum....i sometimes get pepper on the welds. As long as you can wire brush the pepper off are the welds compromised?
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Re: Pepper On Rig Aluminum Welds?

Postby Otto Nobedder » Fri Apr 14, 2017 9:14 pm

rahtreelimbs wrote:When tig welding aluminum....i sometimes get pepper on the welds. As long as you can wire brush the pepper off are the welds compromised?


Generally, no. This is crap floating to the surface, aided by scouring elements in the alloy, as it should. If it's quite excessive, you may begin to doubt the integrity of the metal below the surface, but pepper is common when you're not welding new/clean/fresh stuff.

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Re: Pepper On Rig Aluminum Welds?

Postby exnailpounder » Sat Apr 15, 2017 6:28 am

You can also get pepper in your metal if your balance is off. I run 2 or 3 numbers into the penetration side of the recommended balance on my machine and usually have no pepper or sand.
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