Tandem Gas Metal Arc High-Performance Welding
Tandem GMAW high-performance welding uses two independent wire electrodes in a single torch to achieve extremely high travel speeds and large gap bridging capability. This is especially useful for thick-walled structures.
Physico-chemical mechanism of action
Tandem GMAW high-performance welding uses two independent wire electrodes that burn in a common torch. This allows higher energy output and improves gap bridging by melting multiple points simultaneously.
Metallurgical relevance & welding risks
This technology is especially useful for thick-walled structures, as it enables high travel speeds and improves gap bridging. However, an incorrectly set torch can lead to uneven melting, resulting in porosity or uneven hardness distribution.
Workshop practice & instructions
To carry out tandem GMAW high-performance welding successfully, the electrodes must be regulated independently. Optimal torch setting is crucial to ensure uniform melting. Recommended travel speeds are 30 to 60 m/min for thick-walled steels.