Effect of the O2/CO2ratio and welding current on the geometry of square groove weld joints in low carbon steels obtained with GMAW
| Autor: | Amado Cruz-Crespo, Juan A. Pozo Morejón, Rafael Quintana Puchol, Joel Chaparro Gonzáles, Mauricio Tello Rico, Eduardo M. Díaz-Cedré, Manuel Rodríguez Pérez, Nancy M. Pérez Pino, Félix Ramos Morales |
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| Rok vydání: | 2010 |
| Předmět: |
Heat-affected zone
Materials science Physics::Instrumentation and Detectors Mechanical Engineering Shielding gas Metallurgy Metals and Alloys Laser beam welding Geometry Electrogas welding Welding Electric resistance welding law.invention Gas metal arc welding Mechanics of Materials law Electromagnetic shielding |
| Zdroj: | Welding International. 24:499-508 |
| ISSN: | 1754-2138 0950-7116 |
| DOI: | 10.1080/09507110902844592 |
| Popis: | Welding with fusible electrode and shielding gas (GMAW) using a shielding mixture based on CO2 + O2 is a procedure with high potential for joining low-carbon and low-alloy steels compared with traditional mixtures based on argon. One of the reasons for this is related to the possibility of achieving a high penetration level without the need to increase the heat supply of the electric arc, by employing the shielding mixture of CO2 + O2, and the consequent decrease in the consumption of energy carriers. For that reason, the present paper presents a study on the influence of the shielding atmosphere characteristics (O2/CO2 ratio) and the welding current in the geometry of square groove weld joints on plates. For this purpose, a factorial experimental design was applied to obtaining regression equations, which would map such a behaviour. The equations were obtained using the O2/CO2 ratio and the welding current as independent variables. Nomograms were also plotted in order to make it easier to apply the resul... |
| Databáze: | OpenAIRE |
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