A submerged arc welding is an arc welding method which takes place through the arc or arc formed between the workpiece and the electrode or electrodes consumed, the heat required for welding.

The arc zone is protected by the welding dust layer and the weld metal and weld metal in the base metal near the weld.

In the submerged arc welding, the weld is made of electric arc and molten metal and molten slag.

The arc heat electrode forms the source chamber which fills the welding mouth by melting the welding powder and the base metal.

The welding dust that protects it also reacts with the welding base and deoxides the welding metal.

Welding powders used for welding alloyed steels may contain alloying elements that balance the chemical composition of the weld metal.

The undersea source is an automatic welding method. In some submerged welding applications two or more electrodes can be applied to the welding mouth at the same time. Electrodes can be driven in a side-by-side (TwinArc) welding chamber, or at a distance enough to allow the weld pools to solidify independently of each other, reaching high welding speed and high metal agglomeration speed.

BENEFITS

It is a method with high welding speed which can be used in the sources of flat and cylindrical parts, welds of pipes of all thicknesses and sizes, and hardfacing welds, and high metal agglomeration speed.

It provides faultless and high mechanical strength welding seams.

There is no spatter during welding, and arc heat is not visible, so the protection required for the welding operator is less.

According to other methods, it is possible to weld the weld mouths.

It can be applied in indoor and outdoor areas.

DISADVANTAGES

Powdered dust sources tend to get moisture from the air, which causes the source to be visible. In order to obtain welds at high quality, the base metal must be smooth, there should be no oil, rust and other contaminants on the base metal surface. The slag should be cleaned through the weld seam, which can be a difficult process in some applications.

In the case of multi-pass welds, the slag should be cleaned after each pass so that the weld seam does not have slag residues.

Submerged arc welding is not usually suitable because it may burn in 5 mm dense materials.

 The method is suitable for straight forehead forehead and corner welds, except for some applications.

It is not an applicable method for every metal and alloy.