Screw barrel for PP material

Application:PE, PP, PS, PET, PVC sheet extruder:

Specifications: Φ 60mm~ Φ 250mm

Material:38CrMoAlA

Process:nitriding & bimetallic

Nitrided Hardness:HV900-HV1000

Nitrided Case Depth:0.45-0.8mm

Nitrided Brittleness:Less than Grade 2

Surface Roughness:Ra 0.4

Screw Straightness:R0.015mm

Length diameter ratio：1: (24-33)

Bimetallic ：alloy layer 2-2.5

Benefits

Uniform Melt Distribution and Dimensional Accuracy

PP screw barrels ensure uniform distribution of molten PP 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 PP screw barrel is tailored for maximum performance and reliability.