16 Apr,2025
Plasma Arc Welding
Plasma arc welding refers to a fusion welding method that uses the high energy density beam of plasma arc as the welding heat source. Plasma arc welding has the characteristics of concentrated energy, high productivity, fast welding speed, small stress and deformation, stable arc, and is suitable for welding thin plates and box materials. It is particularly suitable for various refractory, easily oxidized and heat-sensitive metal materials.
The gas is heated by the arc and dissociated. When passing through the water-cooled nozzle at high speed, it is compressed, increasing the energy density and dissociation degree, forming a plasma arc. Its stability, calorific value and temperature are higher than those of ordinary arcs, so it has greater penetration and welding speed. The gas that forms the plasma arc and the protective gas around it are generally pure argon. According to the material properties of various workpieces, helium, nitrogen, argon or a mixture of the two can also be used.
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