The effect of the number of welding passes in the distortion of 304L steel plates
Maurício de Oliveira Silva1; Douglas Bezerra de Araújo1; Daniel Souza1; Paulo Roberto de Freitas Teixeira1
1 FURG
doi:10.20906/CPS/COB-2015-1123
Resumo
The use of stainless steel is gaining more space due to its excellent corrosion resistance, surface finishing, conformation capability and weldability. In the industry it is found in various applications such as pipes, tanks, reactors, distillation columns, heat exchangers and condensers. One of the problems encountered in welding is the distortion caused by the heating and cooling process located in the welded piece. The distortion causes great economic losses because it makes impossible to assemble welded structures and it makes unwanted changes in the geometry structure parts. However, the level of distortion caused in a welded structure depends of several factors. In this way, a study on the influence of the number of welding passes, in a welding joint, on the distortion degree and the bending angle using the MAG process in 304L stainless steel plates. The results showed that the number of passes made to form the weld bead has an influence in the distortion level of the structure piece.
Palavras-chave: Welding; Distortion; Stainless steel