Covered arch wire
Covered arc welding (SAW) In covered arc welding, an arc is created between the workpiece and the end of the welding electrode, while both are covered by a layer of granular dust (hence a 'covered' arc). The arch is thus hidden. Some of the powder melts to form a protective slag layer for the welding flux. The remainder is collected for recycling.
Covered arc welding is mostly done with fully automatic equipment, but there are also hand-held welding guns for the process. In order to increase productivity, several electrode arrangements can be introduced. Due to its high melting performance, it is particularly suitable for high-quality, long, straight welding in a horizontal position. It is widely used in pressure vessels, chemical plants, heavy structures, repair and shipbuilding industries.
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