Special features of refining processes in welding aluminized steel with an oxidizing gas

Abstract

Aluminium content reduction in the weld metal occurs as a result of aluminium oxidation in the weld pool and precipitation of aluminium oxide into slag at welding aluminized steels in active gas and gas mixtures. Additional feed of highly oxidizing gases from the other side of the welding bath at welding in active gaseous medium allows for reaching an even reduction of aluminium content in the weld metal and for improving the mechanical characteristic of the welded joints from aluminized steels.

Keywords:

• gas mixture
• weld metal
• feed of air
• aluminium content
• ultimate strength
• specific elongation