Hardfacing extends component service life by depositing functional alloy layers rather than replacing worn‑out parts directly. Different overlay alloys serve distinct working scenarios: Stellite cobalt‑base alloys handle high‑temperature friction for valve seals, while nickel‑base grades resist heavy corrosion for offshore components.
Compared with manual welding, automated hardfacing delivers stable layer thickness and controlled dilution rate. One operator can supervise multiple machines, cutting human errors and raising batch consistency even without top‑tier welding skills.