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At the request of our commentators articles today talk and show thin metal welding technique (less than 1 mm) electrode of 3 mm. In addition, we specifically complicate the task, and to weld thin metal will have a gap. Self-taught in welding will be very informative and helpful. Go!
For example, I took an old faulty Mass clip. The thickness of the metal from which it is made is less than 1 mm, and if 0.7 mm to be exact.
I had already measured the thickness of the part with calipers.
At this time I did propyl disc thickness of 1 mm, it will be our play. That is, we will brew the propyl.
Electrode we use 3 mm thick. Electrodes coated with rutile, a brand ELN-21. Such electrodes with rutile-coated very easily re-ignited and therefore their good cooking points.
Amperage exposed at the level of about 50 amps.
The technique of welding such a difficult connection will take place here in this way.
First we will do some poking into one place to form surfacing, joining two edges. And now, we light on this surfacing electrode for a split second, instantly weld pool is formed, and at this point we will interrupt the welding arc, but to interrupt a special way.
Welding arc, we will quickly take off to the side and slightly back, this action we dump the weld slag from the bath, and following ignition will be faster and easier, we do not lose time to the arc broke through the slag and began to interact with weld metal.
Otherwise, if you do not throw off slag and not denude the weld metal, while following the formation of the weld pool to increase, and the probability of burn-through will increase many times. And welding a thin metal with a gap will be very difficult.
And so the movement of the electrode point by point, we weld our thin metal 0.7 mm, and besides, with a gap of 1 mm.
That's all welding is complete. In the illustrative example, you see that the electrode can be welded very thin metal.
Now let's see a clear detailed video where I tell all and show the welding itself.