Elimination Back Gouging Operation in Submerged Arc Welding Butt withoutChamfers ASTM A516

One of the processes of submerged arc welding is back gouging operations. This work, in addition toimplementing high cost, requires to consuming much time in production line as well as environmentaland acoustic pollutions which has with itself. This paper presents a way to remove the back gougingoperation from the submerged arc welding process. For this purpose, effects of submerged arc weldingparameters on A516-70 steel sample were investigated. 16 and 18mm thickness sheets withoutchamfering were prepared and by choosing the best parameters, they were welded from face and back.Also, the effects of stress-relief heat treatment and preheat were investigated. Microstructure andmechanical properties were in standard situation and shows the performance of this project. Removingthe back gouging operation significantly reduced the cost, time and also reduced noise andenvironment pollution in submerged arc welding process. By implementation of this design, we willobserve 80% reduction in costs welding and also elimination of the environmental and acousticpollutions which are resulted from back gouging

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Keywords:ASTM A516-70 SteelSubmerged Arc WeldingBack Gouging ، PreheatHeat Treatment