Plasma arc welding (PAW) is an arc welding process very similar to TIG welding as the arc is formed between a pointed tungsten electrode and the workpiece. However, by positioning the electrode within the body of the torch, the plasma arc can be separated from the shielding gas envelope. Plasma is then forced through a fine-bore copper nozzle which constricts the arc. (source: twi-global.com)
Plasma is derived from extreme temperatures of up to 15,000 Kelvins which is 3 times hotter than the surface of the sun. And like TIG welding, plasma welding is an extremely bright process and therefore it requires an intense light source such as laser light that can “break through” the super-bright light and allow the process to be observed up-close.
This particular footage was taken using our Cavitar Welding Camera which is a small and robust imaging system that contains both the camera and our high-power laser illumination in one small box. It was developed and designed to address the needs in industry and in welders’ education in order to provide a detailed view to the welding process and at the same time improving welders’ safety.
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How to use laser illumination in welding applications:
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