The mechanized MIG/MAG welding technique developed was able to achieve optimizations in weld coating and joining applications further than conventional, market available MIG/MAG solutions. At first, higher process robustness and weld reliability can be reached with the MIG/MAG O-PS. In critical applications, like large structures of the Oil and Gas and Shipbuilding industry operating in extreme environments (temperature, corrosion, abrasion, fatigue) these are key factors. The possibility of a wider control of heat input to the welded parts is also of relevance in these sectors, as special, heat sensitive materials are increasingly being employed. Furthermore, overall welding productivity (higher melting rates, higher welding speed, less rework) are also significant benefits. Besides the presented examples other applications can benefit from the properties of the technique, like repair of in-service pipelines and thin-sheet welding. The presented work was highly interdisciplinary and the performed innovations in software, hardware, automation and welding technology grant a wider application spectrum for MIG/MAG. Nevertheless, the focus at this first stage was the development and evaluation of the technique. For specific industrial applications, special materials, joint designs and higher misalignments than the ones tested further work has to be carried out for dedicated parameterization (development of welding procedures). Current R&D efforts are being undertaken at LABSOLDA/UFSC aiming at enhancing the performance of the MIG/MAG O-PS by adding adaptive features to the system (online monitoring and correction of parameters like oscillation amplitude, welding speed and wire electrode feed speed).
Oscillation-polarity synchronized MIG/MAG welding process for enhanced performance in automated joining and coating
2013
6 Seiten, 12 Bilder, 4 Tabellen, 19 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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