The use of automatic and semi-automatic welding methods such as submerged arc welding (SAW) and gas shielded welding (GMAW) in Mashal Gostar Taha Company in carrying out projects.

Welding processes fall into three general categories: manual welding, semi-automatic welding and automatic welding.

Arc welding with SMAW coated electrode

This method requires relatively simple and inexpensive equipment and is therefore widely used. In this method, welding is possible in different modes, and of course the skill of the welder and how to train the welder is important. In any case, the quality of welding and the speed of operation in this method is low.

Welding under GMAW gas protection

Gas shielded welding is an arc process in which the consumable electrode covered by the shielding gas is automatically fed. Since the characteristics of the arc electrode and the deposition rate are adjusted automatically, the only transfer speed, guidance and adjustment of the welding pliers is done manually by the welder.

In this method, there is no slag defect and welding is continuous and is possible in all horizontal and vertical positions.

SAW submerged arc welding

Submerged arc welding is an automated method. In this method, the welding protection material is poured as a powder on the seam and a short distance behind the powder nozzle, an electric arc is established by the bare electrode and under this father. During welding, the sub-powder arc is established and no welding spark is observed and no mask is required for the operator.

In this method, welding is continuous and the appearance of welding is of high quality and welding smoke is low.