Friends, all welcome on our channel, dedicated to all those who have mastered their own welding, or thinks about it. Here we try to give real information based on many years of welding practice, you will not find in the welding textbooks.
Today will be an interesting and important topic, namely that such a polarity for welding. Translated into plain language-polarity, that's where we need to connect the holder for placing the electrode. By cons apparatus, or, conversely, to positive?
See, the electrode itself looks like a minus, and, besides, he is a straight line. So derzhak with the electrode is connected to the minus system, and, accordingly, we now have direct polarity (plus on weight).
But if you connect the other way around-holder for placing the electrode to the positive system, we get the reverse polarity (wire weighing device is connected to minus)
When and how do we do with this knowledge about the polarity?
On packs with electrodes manufacturer sometimes indicates the recommended polarity, and sometimes this information is not available. Then we do so!
Painted comic hint that you will remember forever. Fat man, it's not very good to be fat, it is a minus. Hence, in welding thick metal derzhak electrode connect to minus on the welding machine. This is a direct polarity.
In this case, the welding electrode will be heated less, and the weld metal more precisely what is needed for a good penetration.
Thin thin man, that's good, that's a plus. Accordingly, when welding thin metal electrode derzhak we connect to positive welding machine. This is the reverse polarity.
In this case, the welding electrode is heated more strongly and weld metal is less likely to burn means the metal is reduced, what we need.
I think with such a fun analogy, you are now remember forever what the polarity of the welding, and how to use this knowledge. But in fact, in practice, most of the electrodes are designed to reverse polarity, so especially not to drive, even if it is on the device you have and will continue to. But if in any case, when welding in doubt, try switching the polarity of the experiment, it can be better and more convenient.
Now let's see a video where I was told all the details about the polarity, suddenly in the article forgot something to point out.
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