Plasma Hardfacing Solutions for Screw Conveyors and Augers in Harsh Industrial Environments
Screw conveyors and augers play a critical role in many industrial applications, including brick extrusion machines, solid-liquid separation centrifuges, and polymer extrusion systems. In these demanding environments, continuous friction, corrosive media, and abrasive materials often lead to severe surface wear, reduced efficiency, and frequent component replacement.
At FNS Pipeline Technology Co., Ltd., we provide advanced designed to significantly extend service life while reducing operating costs.
Paper industry screw conveyor with plasma hardfacing for wear and corrosion resistance
Why Screw Conveyors Wear Out
Screw propulsion components typically operate under harsh conditions. In industries such as brick manufacturing, chemical processing, and solid-liquid separation, augers are exposed to:
- Abrasive and viscous materials during continuous conveying
- Acidic or alkaline environments causing chemical and electrochemical corrosion
- Long-term mechanical friction between the screw surface and conveyed media
Over time, these factors lead to surface scoring, material loss, and structural degradation, ultimately affecting production stability and maintenance budgets.
Surface Reinforcement Through Plasma Hardfacing
To address these challenges, screw conveyors are commonly reinforced using hardfacing overlay welding. Among various surface engineering methods, plasma transferred arc (PTA) hardfacing has proven to be one of the most effective technologies for auger and screw refurbishment.
Plasma hardfacing uses a plasma arc as the heat source and alloy powder as the filler material. Depending on operating conditions, cobalt-based, nickel-based, iron-based, or copper-based alloys can be selected and precisely deposited onto wear-prone areas.
Plasma cladding solution for extrusion screw in high load processing equipment
Key Advantages of Plasma Hardfacing for Augers
Compared with conventional welding and thermal spraying processes, plasma hardfacing offers several technical advantages:
- High deposition efficiency with fast cladding speed
- Precisely controlled dilution rate and penetration depth
- Dense, smooth, and uniform overlay layers from 0.5 to 5 mm in a single pass
- Excellent metallurgical bonding without pores or cracks
- Wide material compatibility with customizable alloy formulations
- Stable process quality suitable for long, continuous operation
- Easy integration with automated systems and robotic equipment
These features make plasma hardfacing ideal for screw conveyor wear protection and remanufacturing in high-load, high-corrosion environments.
Automated clad pipe production for oil & gas applications
Plasma Hardfacing Equipment for Screw Applications
FNS Pipeline Technology Co., Ltd. offers specialized plasma hardfacing systems tailored to different screw and auger structures:
Plasma Hardfacing System for Brick Machine Augers
Designed specifically for brick plant extrusion augers, this system combines a positioner, cross-slide, and oscillation unit. It supports both flat and spiral hardfacing, offering an excellent balance between performance and cost efficiency.
Plasma Hardfacing Machine for Extruder Screws
Widely used in the plastics and rubber industries, this solution is suitable for repairing and strengthening plastic extruder screws as well as various shaft-type components.
Horizontal and Vertical Hardfacing Systems for Centrifuge Screws
In solid-liquid separation applications, centrifuge screws operate under highly corrosive and abrasive conditions. Horizontal and vertical plasma hardfacing systems are often used together to ensure complete surface reinforcement of complex internal screw geometries.
Extend Service Life with Reliable Surface Engineering
By applying plasma hardfacing technology for screw conveyors, manufacturers can significantly improve wear resistance, corrosion resistance, and overall component durability—while reducing downtime and replacement costs.
FNS Pipeline Technology Co., Ltd. is committed to delivering reliable surface engineering solutions that support long-term industrial performance.
