Why weld aluminum with alternating current

Why weld aluminum with alternating current

Why weld aluminum with alternating current

 

 

Greetings from Schweißfan,

Why weld aluminum with alternating current

 

The simplest explanation is that the alternating current has the property of cleaning the surface to be welded and cracks open the oxide layer that is present on aluminum parts.

 

 

You can recognize this very well after welding by the small white edge that appears next to the weld seam.

 

When igniting the TIG welding torch, you can of course also see it if you look closely.

 

In AC welding, the tungsten electrode (TIG needle) is both the anode and the cathode.

 

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Aluminum is best welded with a green tungsten electrode. If you take a new one, it becomes round at the tip when ignited, a so-called calotte.

With alternating current, we are talking about AC mode, which must be set on the welding machine.

In DC mode, where you weld stainless steel and steel, for example, you will have a hard time welding aluminum.

 

 

 

AC/CA welding machine:

 

 

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white tungsten electrode:

 

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Why weld aluminum with alternating current

 

 

So then I hope I was able to help you with the article Why do you weld aluminum with alternating current Why do you weld aluminum with alternating current. I would be delighted to receive your feedback. And if you would like to find out and see more about welding, then take a look at our channels. Welding is a daily topic there.

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