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Nitride Screw Barrel
Gas nitrided screws and barrels offering balanced wear, corrosion resistance, and cost for commodity polymers.
Nitriding Layer
0.6 to 0.8 mm
Surface Hardness
HV 900 to 1100
Diameter
16 mm to 200 mm
Overview
Reliable upgrade from standard carburized units for PP, PE, PS, and PVC applications requiring moderate protection.
Technical parameters
- Core Hardness
- 32 to 38 HRC
- Roughness
- Ra 0.4
- Straightness
- 0.02 mm per 1000 mm
Compatible machines
- Injection molding machines up to 800 ton
- PVC pipe extruders
- Blow molding platforms
Compatible resins
- PP, PE, PS
- Rigid and flexible PVC
- Bio-based starch blends
Material and heat treatment
Material composition
- 38CrMoAlA or 40Cr
Heat treatment
- Gas nitriding
- Polishing
Planning a multi-site rollout?
Align metallurgy, stocking plans, and after-sales schedules across factories in China and Southeast Asia with our project managers.