Impact of Electrode Wire Feed Ways on Residual Stresses in Welded Joints

Abstract

A series of experiments have been done to evaluate the way an electrode wire feed affects residual stresses in welded joints. It was found that an electrode wire pulse feed combined with shielding gases decreases residual stresses up to two times in comparison with welding with a continuous feed of an electrode wire.

Numerical Simulation of Thermal Processes in Welding with Pulsed Electrode Wire Feeding

“…The model was verified according the data obtained by using thermography during the welding process [20]. The divergence between the simulation results and the experimental data does not exceed three percent.…”

Definition of Peak Value of Welding Current at Pulsed Arc Welding

“…Passive control of an electrode metal drop transfer means to activate an electrode wire, and to apply nanocomponents in a welding area [1], to utilize a mixture of gases [2,3]. To control an electrode metal drop transfer during gas-shielded welding actively means to apply an external magnetic field overlaying [4,5], an electrode feed programming [6][7][8], or pulse feeding of gases [9,10], and current pulse behavior [11][12][13], combined methods [14].…”