This intelligent hardfacing workstation is purpose‑built for cobalt‑based alloy overlay on valve plate and seat sealing surfaces of triple offset butterfly valves. Adopting PTA (Plasma Transferred Arc) hardfacing process and infinite‑rotating welding torch, it eliminates heavy‑duty positioners. Workpieces sit directly on the platform to finish inner and outer circular sealing‑surface hardfacing for continuous batch‑line production.

Equipped with intelligent seam tracking and high‑intensity color camera module, the system enables real‑time weld bead monitoring. It achieves low dilution rate; cobalt‑6 powder delivers hardness performance equivalent to cobalt‑12, saving 1‑2 tons of cobalt powder per year and lowering consumable expenses. Travel speed ranges 500‑1500 mm/min. Stable horizontal hardfacing produces uniform, dense overlay and reduces post‑weld grinding workload.

The workstation includes CNC motion unit, infinite‑rotating torch, plasma powder‑wire feeder and visual monitoring assembly. It adapts to spherical and circular curved‑surface hardfacing for triple offset butterfly valve seats and plates. One workstation matches output of 3‑5 skilled welders with service life over 15 years, avoiding manual‑caused welding defects and occupational hazards. Cost‑competitive to replace imported hardfacing equipment for valve manufacturers.