OPTIMIZATION OF WELD BEAD DIMENSIONS IN GTAW OF ALUMINUM–MAGNESIUM ALLOY
| Autor: | Mohamed Abu Aesh |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Heat-affected zone
Materials science Mechanical Engineering Gas tungsten arc welding Alloy Metallurgy technology industry and agriculture Welding respiratory system engineering.material Electric resistance welding Industrial and Manufacturing Engineering law.invention Bead (woodworking) Mechanics of Materials law Electrode engineering General Materials Science Composite material Magnesium alloy |
| Zdroj: | Materials and Manufacturing Processes. 16:725-736 |
| ISSN: | 1532-2475 1042-6914 |
| Popis: | The Gas Tungsten Arc Welding (GTAW) process is frequently used in welding of aluminum alloys, because of its possible heat input control. This control can be utilized through a good selection of the process variables, which in turn results in optimizing the bead dimensions. The object of this investigation was to study the effect of TIG process parameters on weld bead dimensions. Suitable combinations of tungsten electrode parameters and process variables can lead to optimum GTAW bead dimensions. With alternative current (AC) polarity, a weld bead may be formed between two 3-mm thick pieces of 5005 aluminum–magnesium alloy sheets. The effect of electrode diameter, vertex angle, and the welding current and speed on the bead dimensions were investigated. Results revealed that the rate of increase of bead width with current increase is greater than that produced by decreasing travel speed, and means that the bead width can be controlled more efficiently by welding current rather than by welding speed. For ex... |
| Databáze: | OpenAIRE |
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