Greetings to the self-taught beginner channel in welding. For those who have recently bought a welding inverter and are trying to weld structures at home, in the garage, in the country.
Profile pipes are the most popular material for welding these very structures. The material is durable, but there is one drawback, the thin metal.
Therefore, the beginner makes frequent burn-throughs. So far, little experience, trying to make the current smaller, then the electrode often begins to stick, welding still does not go. And the structure needs to be cooked, what to do?
Until you have gained enough experience and skill, you can use these 2 tricks to weld the connections of the design you need.
Let's take such a construction as an example. This is a rectangular frame made of a thin profile tube. There are 2 types of pipe connections here.
The first is when the ends of the pipes fit together. Here the gap can be either small or large, depending on how accurately we cut the workpieces.
These ends are easy to burn through when welding. Now, if there was a thicker metal here, then the welding would be successful. And we will make this place thicker.
We beat off the electrode from the coating, leaving a metal rod. We put this rod in place of the joint. Now here the thickness is sufficient to cook without burns.
But it is better to cook here with a break or short stitches. Let it not look so aesthetically pleasing, but the job will be done. The excess will then be cleaned off with a grinder.
When the end of the workpiece rests against the flange of another shaped tube. During welding, this end can also often burn out. Following the same logic, you can thicken this butt.
We just cut the workpiece 1 or 1.5 mm longer right away. And then we stamp the ends with a hammer. When we do this, the metal in this place becomes thicker, and the length of the workpiece decreases. Coated, insert the blank into place and now we weld safely, the probability of burn-through will decrease.
Or here's the outer corner on the frame. Here the metal is even thinner if we sawed the end of the blanks at 45 degrees. The same simple method of chasing with a hammer.
The metal will become thicker here and the place for the suture itself will be wider. It will be easier to cook, the likelihood of burns decreases.
Nothing complicated, these simple methods will only help a beginner to weld his structure from a thin profile pipe.
But this is only at first, when you need to do it here and now. In the future, you need to train and practice so that you can safely weld any thickness without additional preparation.
The only thing is the embossing of the outer corner of the profile pipe connection. Even experienced ones do this, it's just that the weld fits better.