Plasma-arc welding of circular joints in thin-wall cylindrical and spherical structures made of aluminium alloys

Abstract

A plasma-arc welding technique is designed for joints with the technological beads necessary to fasten flanges in thin-walled large-sized cylindrical and spherical constructions. A high-temperature plasma-gas stream penetrating down to the bottom of the bath damages the oxide film when welding aluminium products.

Keywords:

• plasma-arc welding
• aluminium alloys
• oxide film
• through penetration