Scientific and technological fundamentals for the development of the controlled short circuiting MIG/MAG welding process (CCC) - A review of the literature. Part 3 of 3: principles of controlled current short circuiting MIG/MAG systems

摘要

The third part of this series covers, first, the basic function of the conventional voltage controlled short circuiting MIG/MAG welding process (CCC) and the related power source static behaviour. Second, it deals with the mechanisms related to the dynamics of the transfer of the metal drop to the weld pool during short circuit welding. Third, a set of MIG/MAG stability concepts is set out, on which there is no unanimous agreement in current welding studies. Fourth, a proposal by the authors is included. Finally, it demonstrates how systems such as CCC operate and the scientific and technological experience gained by LABSOLDA in this process, from analogue control up to the most modern software controlled versions and the future of the process as part of the advanced control system.