Análise da influência dos parâmetros de soldagem no processo a arco submerso

Abstract

This work aimed to analyze the influence of welding parameters on weld bead geometry when applied to the submerged arc process. Specifically, the project carried out: the construction of a welding torch support and flow reservoir, as well as the analysis of the weld bead geometry as a function of the welding parameters. To achieve these objectives, a prototype support for the welding torch in CAD software was created and then fabricated by machining, preparation of the base metal and definition of welding parameters. From then on, welding began. The results showed that the supports provided a good performance for the welding and the geometries of the beads showed a difference in their structure regarding the occurrence of porosity in some beads, having a strong relationship with the stress and the type of flux employed. The contact tip to work distance (CTWD) showed a tendency to decrease current when it increased. In addition, welding current and welding energy showed similar behavior when influencing weld bead geometry. That is, when the current and welding energy increased the height decreased and the width increased.

Keywords

• submerged arc welding. welding parameters. weld bead geometry