Analysis of possibility modeling of the multiarc welding in ESI SYSWELD

The article is devoted to the modeling of multiarc welding in ESI SYSWELD. Functionality of the program allows modelling MMA, MIG, MAG welding processes, submerged arc welding, multi-pass and hybrid welding. However, there is no mathematical model for multiarc welding. The use of multi-pass welding does not reflect the physical essence of the multiarc welding, because the bead joints in multipass welding are superimposed sequentially in different parts of the deposited metal, which is contrary to the concept of the multiarc welding, which is carried out in one welding bath. The experiments examined the effect of specified heat sources. The system of hybrid welding and combinations of several heat sources: general arc, submerged arc, etc. were considered. The tests took into account the welding trajectory, namely, application of heat sources of all five arcs on the top edge of the array of elements of deposited metal or application of heat sources on the welding trajectory, distributed along the height of the weld. The movement of the welding arc occurs with time delay and on different trajectories of welding. The article provides results of thermal calculations and their comparison with the sample.