TIG AND PLASMA INSTALLATION
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.
Lincoln Electric offers two types of control panel:
NERTAMATIC 450 Plus and
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