The latest advancements of MIG/MAG welding technologies have experienced a steep evolution in functionality, reliability, and ever-growing process and weld controllability, within widely interdisciplinary approaches and driven by demanding trends of Advanced Manufacturing (Industry 4.0). Technologic development can be optimized through basic research, which focuses on understanding the physical phenomena involved in metal transfer, weld pool behavior, and bead geometric formation and their correlation with each other and with the process’s variables. In this context, the objective of this work is to compare different waveforms of the short-circuiting MIG/MAG process with current control, namely CCC and SOFT, with the conventional process version, evaluating the influence of the electrical parameters on process stability and the general morphology of the weld beads. Analysis of metal transfer by means of high-speed filming and thermal analysis by infrared thermography supported conventional oscillographic monitoring for process characterization. Spatter emission assessment by means of image analysis was performed as well. The process’s versions with current control resulted in better operational weldability, geometric control of the bead, and lower spatter emission.

MIG/MAG 焊接技术的最新进展在功能性、可靠性以及不断增长的工艺和焊接可控性方面经历了急剧发展，采用广泛的跨学科方法，并受到先进制造（工业 4.0）的苛刻趋势的推动。技术开发可以通过基础研究来优化，基础研究侧重于了解金属转移、熔池行为和焊道几何形成所涉及的物理现象，以及它们之间的相互关系以及与过程变量的相关性。在这种情况下，这项工作的目的是将具有电流控制的短路 MIG/MAG 工艺（即 CCC 和 SOFT）的不同波形与传统工艺版本进行比较，评估电气参数对工艺稳定性和焊道一般形态的影响。通过高速成膜和红外热成像热分析对金属转移的分析支持用于过程表征的常规示波监测。还通过图像分析进行了飞溅排放评估。带有电流控制的工艺版本带来了更好的操作可焊性、焊道的几何控制和更低的飞溅排放。