Some Contributions to the Optimization of MIG Spot Welding of Aluminum Alloys

In the context of some problems noticed by the business environment regarding the quality and costs of welding aluminum components, some experimental research was carried out on the efficiency of applying MIG spot welding, using improved equipment and working regimes. A new technical solution is proposed for joining thin aluminum plates using MIG spot welding instead of resistance spot welding. Therefore, the research was guided in studying the influence of two main parameters – specific to the MIG welding process – on the quality of welded joints. According to the obtained experimental results, in the paper is highlighted that MIG spot welding could be a viable alternative to resistance spot welding of thin aluminum plates, but just then when some important conditions are fulfilled. The paper also contains some practical recommendations for specialists working in this operational field.