How Arc Welding Works

Shielded arc welding is usually  accomplished by means of an electric arc  formed between the work and the coated  metallic electrode let's see what  happens when the arc is struck it almost  instantly creates a temperature of about  degrees Fahrenheit this melts both  the base metal and the metal and the electrode.

The metal from the electrode  is melted off in tiny droplets is  carried across the arc and mixed with  the molten base metal the force of the  arc and the forward travel of the  electrode causes the mixed molten metal  to be pushed to the rear of the crater.

Where it cools to form a bead the  movement of this metal toward the rear  of the crater and the depth of the  crater are an excellent check on the  quality of the work the operator should  learn to use it as his guide at the same  time that the metal is melting the  coating on the electrode is being  consumed....

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