Avaliação das técnicas de soldagem MIG-P CA e MIG-P CC+ aplicadas ao passe de enchimento em liga de alumínio AA5083
For contain beneficial properties, aluminum alloys are gaining more importance in different industrial areas, becoming the subject of study in several academic fields. When related to welding these alloys have some peculiarities that may hinder the union, such as microscopic oxide layer present o...
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| Natura: | Dissertação |
| Lingua: | por |
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Universidade Federal do Rio Grande do Norte
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| Accesso online: | https://repositorio.ufrn.br/jspui/handle/123456789/19416 |
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| Riassunto: | For contain beneficial properties, aluminum alloys are gaining more importance
in different industrial areas, becoming the subject of study in several academic
fields. When related to welding these alloys have some peculiarities that may
hinder the union, such as microscopic oxide layer present on the metal surface.
The MIG welding process, also known as GMAW, has developed versions that
can be effective for welding aluminum. Knowing this, for this paper, two versions
of pulsed MIG (CC + and CA) were chosen to evaluate which best suits pass by
filling bevel on AA5083 aluminum sheets with 8 and 12 mm thick respectively.
Furthermore, two types of wire, ER5087 and ER5183 were evaluated. To
evaluate the process and versions of the wires, the high-speed cameras and
thermal were used to monitor the metal transfer and the thermal behavior
respectively, and the metallographic analysis for macrographic view of the weld
beads and non-destructive testing by radiography for observation of possible
discontinuities. It was found that the technique of MIG-P CA showed better results
ahead of another technique both welding conditions imposed. When connected
to the wires, they showed similar results, with uniform cords and seamless |
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