TIG welding machine

plasmaPLC-controlledfor metal

TIG AND PLASMA INSTALLATION Applications Multi-purpose welding installation to enable the following processes to be used in automatic applications: • DC TIG with smooth or pulsed current, • AC TIG with variable polarity, • DC plasma with smooth or pulsed current. This installation meets the highest quality standards for welding and productivity for industries as diverse as boiler-making using stainless steels, aeronautics using precious metals, chemical engineering, energy production, transformation and transport as well as prefabrication of gas and petrol pipelines etc. TIG / PLASMA process and performance The Plasma process is the ideal extension of TIG for thicknesses greater than 3 mm. It ensures the same level of quality, higher performances and 100% penetration thanks to Key-Hole technology. The diagram shows the different welding performances according to the materials and thichnesses. Maximum thickness which can be welded in a single pass is reduced for: • vertical down and cornice (2G) welding positions, • small diameter and very thick tubes. Improvement productivity with PLASMA + TIG Process The Plasma + TIG process is specially designed for assembling panels for the prefabrication of vessels longer than 4 meters and carrying out circular welds for diameters greater than 2 meters. This process of using 2 torches in tandem gives a productivity gain of 30-50 % over a single-torch plasma installation. The “plasma” arc penetrates the butt-jointed panels. The “TIG” arc equipped with filler metal, electromagnetic arc oscillation and a gas trailing shield produces a perfect surface finish which can often be left without any further treatment.