Product Overview
The screw elements used in twin screw extruders are the essential components that define the efficiency, stability, and product quality of the entire extrusion process.
ZHITIAN screw elements are designed for continuous, high-load, and high-shear applications, ensuring excellent mixing and conveying performance while maintaining superior durability.
Each element is precision-machined using CNC equipment to achieve exact dimensional tolerance and perfect interlocking fit between segments. This precision guarantees stable torque transfer, optimized melt flow, and uniform material distribution.
ZHITIAN employs advanced materials such as 38CrMoAl nitrided steel, W6Mo5Cr4V2 high-speed tool steel, and PM-HIP grades (SAM26, SAM39, CPM10V, CPM9V). These materials deliver outstanding resistance against wear, corrosion, and high temperature — ensuring long-term reliability in polymer, masterbatch, and engineering plastics extrusion.
Technical Attributes
| Attribute | Description |
| Material Options | 38CrMoAl, W6Mo5Cr4V2, SAM26, SAM39, CPM10V, CPM9V |
| Hardness (HRC) | 58–68, depending on material and heat treatment |
| Surface Treatment | Nitriding, Polishing, or Coating as per request |
| Precision Tolerance | ±0.01 mm for intermeshing accuracy |
| Applicable Extruder Brands | Coperion, Leistritz, Theysohn, JSW, SM, USEON |
| Working Function | Conveying, Mixing, Shearing, Plasticizing |
| Application Industries | Plastic Compounding, Chemical, Rubber, Biomaterial |
| Manufacturing Process | CNC Machining + Quality Inspection + Heat Treatment |
Advantages
- Extended service life through advanced alloy materials
- High consistency between screw elements for precise assembly
- Reduced energy loss and smoother material flow
- Customizable design to fit any twin screw extruder model
- Excellent balance of wear and corrosion resistance
Applications
- Plastic compounding and masterbatch production
- Rubber and elastomer blending
- Engineering polymer modification
- Corrosive or high filler extrusion materials
- Food and biodegradable polymer processing
Why Choose ZHITIAN
With over 20 years of experience in the twin screw extrusion industry, ZHITIAN specializes in manufacturing screw elements, barrels, and gearboxes for co-rotating twin screw extruders.
Our products are widely used across Europe, America, and Southeast Asia, backed by strong R&D capability, precision machining, and strict quality control.
FAQ
Q1: How does material choice affect screw element performance?
A1: The material determines hardness, wear resistance, and corrosion stability. For high-fill or high-shear compounds, PM-HIP materials such as SAM39 or CPM10V are recommended.
Q2: Are ZHITIAN screw elements compatible with other extruder brands?
A2: Yes. Our elements are fully interchangeable with most international twin screw extruder brands, ensuring seamless replacement.
Q3: What quality tests are performed before shipment?
A3: Each element undergoes hardness inspection, 3D measurement, and surface roughness testing to ensure accuracy and durability.
Q4: Can I order custom geometry for specific material flow patterns?
A4: Absolutely. ZHITIAN provides design optimization based on your screw layout, material type, and process requirements.
