When tough quality requirements have to be met on sheets and other components of up to 8 mm (0.31″) in thickness: this is when the plasma keyhole process comes into its own. A cooled gas nozzle constricts the arc, delivering a powerfully bunched arc that eliminates the need for labor-intensive weld preparation work such as V- or U-type joint preparation. This saves as much as 30 % of the filler metal. Digital TIG power sources in the 400 to 500 A power range can simply be combined with the PlasmaModule 10 and the plasma welding torch Robacta PTW 3500 to create a plasma keyhole welding system for mechanized applications in the power range between 3 and 500 A.
chrome-nickel materials, coated and uncoated steels, titanium and all nickel-based materials
Fields of use
automotive vendor industry, for pipeline and tank construction, in mechanical engineering and structural steelwork, for rail vehicles and rolling stock, and in shipbuilding