Solutions Implementation Problems of Automatic Orbital Welding of Main Pipelines through a Narrow Gap

Ensuring weld quality and performance of the processes of orbital welding of main pipelines is an urgent problem. An effective solution to this problem is the reduction of weld metal volume during welding through a narrow gap. However, this method has a high probability of characteristic defects occurrence in the form of deep undercuts, lack of penetration and poor fusion. To eliminate these defects it is necessary to conduct the comprehensive studies based on physical modeling of welding characteristic disturbances, including wandering arc cutting. To carry out the studies a virtual orbital welding process for assessing the effects of process parameters on the quality of welded joints should be developed.

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