Screw Conveyor Parts
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PTA Vertical Screw Hardfacing Machine
Automatic Plasma Transferred Arc (PTA) Welding System for Screw Flights, Screw Conveyors & Extruder Screws — Engineered by Shanghai Duomu Industrial
Shanghai Duomu Industrial’s PTA Vertical Screw Hardfacing Machine is a fully automatic Plasma Transferred Arc welding system built to hardface and rebuild industrial screw components. It deposits wear-resistant alloy powder onto screw flights, screw conveyors, extruder screws and other rotating parts, forming a dense metallurgical bond with the base material — not just a surface coating.
Compared with conventional repair methods, PTA hardfacing delivers lower dilution, more consistent coating quality, and significantly longer service life, making it the preferred choice for OEM manufacturers and repair workshops that need reliable, repeatable wear protection at scale.
