Welding procedure of elements for the electrical industry, in particular sealed boiler wall panels using MIG / MAG and laser welding

摘要

Welding process of elements (1, 2) for the electrical industry, in particular sealed wall panels of boilers and steam generators, in which tubes (1) forming sealed wall panels are joined with flat bars ( 2) by means of a high power fiber laser (3), in which the welding is performed as a double-sided flat butt welding without chamfering of the faces to be joined, characterized by the fact that the welding is performed at a speed of more than 1 m / min, while the laser beam is irradiated in a fusion bath, said bath being formed in the MAG welding process (4) with protection with noble gas, or else the laser beam is dragged up to 10 mm behind said bath, with the MAG electric arc process (3) positioned at an angle β of 40-80 ° in the XZ plane and at an angle δ of 40-80 ° in the YZ plane, recasting the welding (5) then with the laser beam located at an angle of incidence α of 1-5 ° in the XZ plane and at an angle γ of 1-5 ° in the YZ plane.