Optimization of the phasing of electrodes in four-arc welding of gas transmission pipes with a wall thickness of 6–10 mm

Abstract

The optimum phasing of the electrodes and the conditions of four-arc submerged-arc welding of thin wall pipes (6–10 mm), resulting in the height of the convex region and the width of the welded joint not greater than 2.5 and 20 mm, respectively, are determined.

Keywords:

• submerged multi-arc welding
• thin-walled tube
• large-diameter gas pipe
• welding conditions
• phasing of electrodes
• electromagnetic interaction of arcs