When we are faced with something that we have never done before, many difficulties are bound to arise. You can learn from your own mistakes, or you can ask experienced comrades for advice. Today I decided to touch on the topic of welding, because I myself was initially tormented and could not do everything right. Let's talk about where the angle should be directed: forward or backward.
When you insert the electrode into the holder of the welding machine, the tool resembles a square. This association will help you later remember the correct position of the electrode during welding.
In the first case you can weld parts by leading the electrode "away from you". It turns out that the fired arc moves forward from the starting point. This option is called forward angle welding.
You can do it in another way. In the second case the electrode will move "towards itself", i.e. from the starting point back. This method is commonly called the "back angle".
I would like to talk about how these two methods differ and which one is better to use.
When the electrode burns, the welding arc melts the metal. The metal is poured into the weld pool, resulting in a weld seam. When the parts cool down, they are “tightly” connected.
If the parts are welded with an angle forward, the metal will melt to a shallower depth, and the weld seam will be wider. In this case, there is a possibility that the slag will flow in front of the arc, which will significantly complicate and worsen the entire process of welding parts.
When welding with a backward angle, the penetration depth is greater and the seam is thinner. All slag will be thrown back (the main thing is to correctly tune the tool).
When it is necessary to weld parts made of thick metal, the electrode is often moved "towards you". The exception is vertical seams, in which it is better to lead the apparatus forward.
For thin metal parts, the angle-forward method is also better suited. When there are gaps in the joint, this welding method minimizes the risk of burn-throughs. In the absence of gaps, it is allowed to weld "backward angle".
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