STUDY OF ARC IMPULSE FREQUENCY EFFECT ON THE STRUCTURE AND PROPERTIES OF WELDED CONNECTION ELEMENTS IN ALUMINIUM PIPELINE SYSTEMS, MADE WITH MASTERTIG 3500

Abstract

Summary . The article focuses on the arc impulse frequency effect on the structure and properties of welded connections in aluminum pipeline systems hand-operated with argon-arc welding nonconsumable rod on MasterTig3500. It was revealed that the frequency of the welding current impulses plays an important role in the forming of the welded connection. The authors determined the optimal value of the welding current frequency significantly accelerating the welding process to ensure consistent quality of the weld. The authors detailed some features of cleaning assembly parts with a wire brush prior to welding process.

Keywords

• welding
• aluminum-magnesium alloys
• porosity