When it comes to high performance tandem welding, the main challenge is successfully controlling both arcs. Achieving this allows operators in the container, vehicle, and wagon construction industries to easily perform multi-layered or long welds in order to produce top-quality large-scale components. The TPS/i TWIN Push system, which is already well established on the market, is now joined by TWIN Push-Pull systems including the CMT TWIN process, which is well equipped to deal with such challenges. From now on, it will be possible to use tandem welding systems to join aluminum as well as steel.
Two Versatile Powerhouses
The TPS/i TWIN Push-Pull solution is designed for use in motor vehicle and railway vehicle construction, and is used to weld aluminum profiles or pressure containers using the PMC (Pulse Multi Control) process. In addition to the PMC process, the new TPS/i CMT TWIN system also uses the CMT (Cold Metal Transfer) process, thereby also enabling welding of aluminum, nickel-base alloys, and high-strength steels. The controlled heat input provided by the Cold Metal Transfer process is also particularly well suited for thin sheet applications. Penetration and weld profile can be further optimized if each TWIN arc is set to a different performance level.
High Speed and 25 kg Deposition Rate
In practice, the benefits of tandem welding compared to single wire welding are particularly apparent in cases where a perfect result needs to be produced at high speed. With a deposition rate of up to 25 kilograms per hour and a speed of up to 4 meters per minute, the Fronius TPS/i TWIN systems are quite the workhorses. This is made possible thanks to a wire speed performance of around 30 meters per minute for each processing line. Despite this speed, a flawless finish is achieved with reliable penetration quality and no weld-seam porosity. This reduces both the number of layers and the production time.
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