HDPE Screw Barrel

HD screw barrels are essential components in extrusion equipment designed for high-density polymers such as HDPE (High-Density Polyethylene). These screw barrels are crucial for melting, mixing, and extruding high-density resins into various products, ensuring uniform melt distribution, controlled cooling, and precise dimensional accuracy required for different high-density product specifications.

Specification: 

Screw diameter:Ø15-Ø300   Aspect ratio:15-46

Product type:
For different plastic products screw can be used: ordinary type, pin type, barrier type, separation type, exhaust type and so on. 

Base material:

1)38CrMoAlA(JIS SACM645)           2)42CrMo(AISI 4140)

Process:

Heat treatmet                                       Nitriding treatment

Technical Parameters:

Nitriding depth: 0.50mm-0.80mm                                
Nitriding hardness: 900-1000HV               
Nitriding: <= Level 1                   
Surface roughness: Ra 0.4                  
Screw straightness: 0.015mm                
The hardness of the surface after chrome plating:≥950HV       
Chromium layer thickness: 0.025~0.085mm          
Double alloy depth: 3mm

Advantages

Automatic CNC lathe, milling machine equipment, deep hole boring machine, up to 10m depth nitriding and automatic heat treatment equipment;

Professional operators to ensure the accuracy of each process;

Various mixing heads design to meet the plasticizing requirements of different plastics.

Benefits

Uniform Melt Distribution and Dimensional Accuracy

HD screw barrels ensure uniform distribution of molten high-density resin within the extrusion die, resulting in consistent product dimensions and quality. This enhances product performance and reduces material waste.

Enhanced Durability and Wear Resistance

Our screw barrels are manufactured from high-grade materials such as nitrided steel, bimetallic alloys, and tungsten carbide coatings, offering exceptional wear resistance and extended service life. This minimizes downtime and maintenance costs.

Optimized Processing Parameters

By optimizing screw geometry and material composition, our screw barrels improve extrusion parameters such as cooling efficiency, melt homogeneity, and line speed control. This enhances production efficiency and reduces energy consumption.

Customization Options

We offer customization options to meet specific customer requirements, including screw diameter, L/D ratio, flight geometry, material composition, and surface finishes. Our engineering expertise ensures that each HD screw barrel is tailored for maximum performance and reliability.