Plasma Arc Welding (PAW) is an advanced variant of TIG welding. It constricts the electric arc through a small nozzle, creating a high-energy, concentrated plasma jet.
Compared with conventional TIG, PAW features deeper penetration, narrower heat-affected zone and stable arc performance. It is widely adopted for precision hardfacing on valve seats, turbine parts and high-pressure components.
The controlled heat input helps keep low dilution rate when depositing Stellite alloy. This ensures the overlay retains excellent wear & corrosion resistance.
PAW suits thin-wall parts and heavy-duty workpieces alike. Combined with automated positioners, it delivers repeatable high-quality welds for mass production in pressure vessel and oil & gas industries.