INCREASING THE STABILITY OF THE PROCESS OF WELDING STRUCTURES OF ALUMINIUM AND MAGNESIUM ALLOYS USING AN IMMERSED ARC.

The results show that structures of aluminum and magnesium alloys up to 60mm thick can be welded efficiently by welding (without edge preparation) with an immersed arc using a non-consumable electrode. This procedure results in high quality welded joints with a small number of defects. It is shown that consumable electrode welding with an immersed arc is also highly efficient in welding components of comparatively small thickness (5. 0-10. 0mm). In this case it is not necesary to use filler wire (strength factor 0. 90-0. 95). The results show that the stability of the welding process and, consequently, the probability of producing high quality welded joints are determined by a limited range of the welding parameters.