This study approaches conflicting aspects of high-performance MIG/MAG associated with penetration. It demonstrates that a simpler version with voltage control enables the obtainment of good results as long as some premises, related to the power source, are maintained. The molten pool in this case is a cavity in the piece, which is caused by a condition referred to as “buried arc.” In this technique, a short circuit is imminent, and dynamic characteristics are required of the power source employed, so that the arc stability is maintained through a change in the value of the current at different rise and fall rates. The use of different gas mixtures was also analyzed, including the version referred to as T.I.M.E. Even though it influenced the geometry of the melted zone, this gas mixture does not provide a significant improvement in the buried arc in relation to other mixtures. A comparison, in terms of the dynamic morphology of the pool, between the process with voltage control and the variant Rapid Arc (pulsed current) also shows the efficiency of the simpler version for a deep penetration. The employment of less expensive mixtures, such as 50% of CO₂ in argon, technically achieves the same objectives in high-performance welding.

中文翻译：

---

适用于深度渗透应用的高性能GMAW工艺

这项研究探讨了与渗透相关的高性能MIG / MAG的冲突方面。它表明，只要保持与电源有关的某些前提，带有电压控制的简单版本就可以获得良好的结果。在这种情况下，熔池是工件中的空腔，这是由称为“埋弧”的情况引起的。在该技术中，即将发生短路，并且所使用的电源需要动态特性，从而通过以不同的上升和下降速率改变电流值来保持电弧稳定性。还分析了不同气体混合物的使用，包括称为TIME的版本，即使它影响了熔融区的几何形状，相对于其他混合物，这种气体混合物并未显着改善埋弧。就池的动态形态而言，在采用电压控制的过程和变种的快速电弧（脉冲电流）之间进行的比较也表明，较简单版本的深度穿透效率较高。使用较便宜的混合物，例如50％的一氧化碳₂在氩气中，在高性能焊接中在技术上达到了相同的目标。