Abstract In the cable-type welding wire CO2 welding process, the arc coupling and rotation behaviors are greatly different from those in typical single-wire CO2 welding. A deflection length model is proposed to explain the phenomenon of arc shape interaction and coupling, which is considered to be caused by a concentration of forces at the central wire resulting from the electromagnetic forces generated by the currents running through the individual wires. The arc rotation is influenced by the compositional characteristics of the cable-type welding wire as the wire is fed, resulting in self-rotation as the wire melts. The arc stability, the droplet transfer behavior and the weld pool are affected by the balance of the forces during the welding process and cause the arcs from the cable-type welding wire to couple together, resulting in a stable arc and stable droplet transfer. The combined forces acting on the weld pool are beneficial for the transfer of arc heat and droplet heat to the side and bottom of the molten pool, affecting the weld pool and weld formation.

中文翻译：

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缆式焊丝CO 2 焊接中电弧耦合和旋转的机理

摘要 在电缆式焊丝CO2焊接过程中，电弧耦合和旋转行为与典型的单丝CO2焊接有很大不同。提出了一种偏转长度模型来解释弧形相互作用和耦合现象，这被认为是由流经单根导线的电流产生的电磁力在中心导线处集中力引起的。送丝时，电弧旋转受电缆型焊丝成分特性的影响，导致焊丝熔化时自转。电弧稳定性、熔滴转移行为和熔池在焊接过程中受力平衡的影响，导致电缆型焊丝产生的电弧耦合在一起，产生稳定的电弧和稳定的液滴转移。作用在熔池上的合力有利于电弧热和熔滴热向熔池的侧面和底部传递，影响熔池和焊缝的形成。