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Bimetallic Screw Barrel
Ni-based alloy liner with tungsten carbide reinforcement for extreme abrasion and corrosion resistance in filled and recycled polymers.
Hardness
Liner 62 to 68 HRC
Diameter
14 mm to 220 mm
Max Length
8000 mm
Overview
Ideal for PVC, glass fiber reinforced PP, and engineering resin compounding lines requiring long service life in harsh chemistries.
Technical parameters
- Liner Alloy
- Ni60, Ni50CrMo with WC reinforcement
- Base Material
- 38CrMoAlA or 42CrMo
- Wear Layer Thickness
- 1.5 to 2.5 mm
- Straightness
- 0.02 mm per 1000 mm
Compatible machines
- Haitian MA, SA, Jupiter
- Chen Hsong SM
- JSW J series
- Battenfeld extrusion lines
Compatible resins
- PVC with CaCO3 and stabilisers
- Glass filled PP and PA
- Recycled HDPE and PP
- Flame retardant PC and ABS
Material and heat treatment
Material composition
- Ni-based liner (Ni > 60 percent, WC 30 percent)
- Base: nitrided alloy steel
Heat treatment
- Vacuum hardening and tempering
- HVOF spray welding for liner bonding
- Stress relief and straightening
Planning a multi-site rollout?
Align metallurgy, stocking plans, and after-sales schedules across factories in China and Southeast Asia with our project managers.