Avaliação dos processos de alívio das tensões resultantes da soldagem de materiais, pelo processo MAG.

Abstract

The welding is a manufacturing process that aims to join two or more parts, maintaining the physical and chemical properties of the material. However, in practice this does not occur immutability therefore will always have some kind of change generated by concentrating residual stress. The work monitored various welding processes, and sought alternatives that allow relief of the stresses arising, reducing or avoiding the possibility of the appearance of discontinuities that could possibly being caused. The tests showed that some of the remaining welding stress relief processes can improve the performance of welded material as its ductility and the maximum tensile strength that the material can support before breaking in its plastic state, it was possible to determine the relief control more effective for certain types of welding. Among the types of actions tested in this study, the pounding process proved to be the best result of mechanical and relief control at high temperatures, relative to thermal processes.