ATIG welding of structural steels used in power machine-building

摘要

Effectiveness of application of ATIG welding of structural low-alloyed carbon and heat-resistant steels was studied. It was shown that improved arc penetrability at lower currents may initiate formation of structural components in the joints, which increase the strength and lower the ductility of the metal. In order to eliminate the influence of this factor on the structural strength of the joints, it is rational to conduct their annealing, including local annealing combined with self-pressing, used to produce a satisfactory weld geometry.