Classification of metal arc welding electrodes
The metal arc welding electrodes are used for welding or joining two metals together. When we talk about these electrodes we also have to talk about the coating of the electrodes. There are heavy coated electrodes and light coated electrodes.
There are also bare electrodes. There are several factors by which the right electrode is chosen. Resistance to corrosion is the most important on the list.
The electrodes must be coated so that they are resistant to atmospheric corrosion which would otherwise render them useless. Material ductility is another factor that is considered before choosing the coating.
Also the position of the weld is necessary to choose the material as well. Another very important factor that should be chosen to choose the metal arc electrodes is the strength of the weld that is required. If you choose an in adequate electrode then it may affect the quality of the work.