DO IT YOURSELF ALUMINUM WITHOUT ARGON - USEFUL AND INTERESTING

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Hello friends! I will show how to weld aluminum without argon, a conventional inverter. The whole process will be completely identical as in electric arc welding of steel, with the exception of one small change. Using this method, you can easily repair aluminum parts or components of a house, without expensive equipment for argon welding.

Will need

DC inverter capable of outputting 120 A.
Special electrode for aluminum welding.

With a welding machine, I think everything is clear, but about the electrode you need to explain. It turns out, not so long ago, specialized electrodes for welding aluminum by conventional welding without argon medium appeared on sale.
Their brands may be different, so ask in stores. In any case, they can be purchased without problems on the Internet.

They have the same structure as the electrode for steel: a core with a thick coating. Everything is the same here, only the electrode has a different color palette: the core is shiny, since it consists mainly of aluminum, the coating is white.

Such electrodes are intended not only for aluminum, but also for its alloys: silumin, duralumin. Therefore, you can easily cook them.

What you need to know to make a high-quality seam?

Although the method is almost no different from conventional arc welding, the following should be considered:

Welding current should be about 70-100 A
Welding is carried out in a short arc.
The angle of the electrode during welding should be 90 degrees.
The electrode burns out three times faster than with conventional steel welding.

Cooking aluminum is much more difficult, so if you have never done this before, I advise you to definitely practice, which I will do as well.

We weld aluminum with a conventional inverter without argon

My first experience was welding this metal in an argon-free environment. I will weld thick plates. We fix the details with clamps. The minus is connected to the bottom plate. Plus to the electrode.

Initially, I recommend setting a current of 100 A and trying.

We cook everything in a short arc, since due to the fast melting of the electrode it is very difficult to catch, especially from a habit.

Getting used to it already turns out to keep the arc stable.

As after normal welding, we beat off the scale with a hammer.

And we brush it.

Do not judge strictly, for the first training time, I think this is a good result.

Especially considering how laborious and unusual it is after conventional steel welding.

Recommendations for quality welding

Brush the weld metal to remove oxide from the surface.
If possible, heat the parts with a gas burner to 150-200 degrees Celsius, this will simplify the task of obtaining a high-quality seam.
At the time of welding, lead the electrode faster, since it burns out about 3 times faster.

Summarizing

Using this method, you can:

- cook sheet aluminum;
- aluminum profile;
- repair engine boats or any blocks from duralumin or silumin;
- any welding work of barrels or tanks;
- weld conductive tires;
- and much more.

The weld strength is no worse than argon welding.
Of course, a little time-consuming process, but you just have to adapt and everything will go smoothly. Among the shortcomings, I would like to note the low cost of the electrodes, compared with conventional ones. But if you compare with argon welding, then the centimeter of the seam turns out to be several times cheaper, so the method still wins.
Be sure to watch the video, where you can see how hard it is to do the first time.

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