Effect of Weld Configuration on Structural Strength of Submerged Arc Welding

Abstract

Submerged arc welding (SAW) is a popular method of joining the metals. It gives greater protection to the welds from contamination from the external oxidation which is the main source for weakness of the weld. Also weld quality can be better controlled in the SAW by the control of weld speed, current, voltage and filler rod dimensions. But the weld formation on the parent metal is the key factor in generating the residual stress along with fatigue life of the joint. The proper insight of effect of weld formation in the joint is essential for better weld strength designs for longer life. Any weakness in the joint is the potential source for failure. The advent of finite element based numerical software, one can easily estimate the strength of joint using virtual simulation methods. In this work, the preparation and weld configuration effect on the residual stress formation due to SAW is carried out.