Effect of Welding Position and Gap between Samples on Hybrid Laser-Arc Welding Efficiency

Abstract

Influence of welding position and gap between samples on efficiency of hybrid laser-arc welding (HLAW), geometry of melting zone and alloys of filler material depth penetration are presented in the publication. Studies were indicated that maximal efficiency (thermodynamic efficiency about 43%) was achieved at hybrid laser-arc welding in PG welding position. Efficiency at PA and PC welding positions were 31.8% and 33.8% accordingly. Researches were indicated that melting zone, depth penetration alloys of filler materials and efficiency of HLAW increase with increasing gap. Experiments were indicated, that depth penetrate of filler material alloys is 20 mm (gap 1 mm). Proportion of filler material in a top part of metal seam is 50%, in bottom part of metal seam is about 5%.