Precision Engineered Screw Elements for Co-Rotating Twin Screw Extruders

In every co-rotating twin screw extruder, screw elements are the critical motion components that define how efficiently materials are conveyed, mixed, and plasticized. Their geometry, surface quality, and alloy composition directly affect production stability, product uniformity, and mechanical wear.

ZHITIAN’s screw elements are manufactured through multi-axis CNC machining and advanced heat treatment, achieving micron-level accuracy and perfect axial alignment. Designed for long-term, high-torque operation, these elements maintain dimensional stability even under extreme mechanical stress and high temperature conditions.

To meet the diverse requirements of polymer compounding and engineering material modification, ZHITIAN offers a comprehensive selection of wear-resistant and corrosion-resistant materials such as W6Mo5Cr4V2, 38CrMoAl, Cr12MoV, SKD61, and PM-HIP alloys (SAM26, SAM39, CPM10V, CPM9V).

Each production step — from material inspection to finishing — follows a standardized process, ensuring consistency across every segment and guaranteeing full interchangeability between screw elements.

Exceptional wear life thanks to powder metallurgy alloys

Corrosion resistance for chemical and filled polymer applications

Smooth torque transmission through precision interlocking design

Optimized surface finish for minimal material adhesion

Full customization for geometry, flight pitch, and material grade

ZHITIAN screw elements are widely applied in:

Engineering polymer compounding and blending

Masterbatch and additive manufacturing

Elastomer and rubber compounding lines

High-filler and fiber-reinforced extrusion

Corrosive or high-temperature chemical extrusion processes

At ZHITIAN, we integrate metallurgical expertise with digital manufacturing.
Each screw element is traceable through its production batch, from raw material to final inspection. Using 3D coordinate measuring systems (CMM) and digital hardness verification, we ensure every element meets stringent quality and interchangeability standards.

Q1: How do ZHITIAN screw elements ensure consistent extrusion performance?
A1: Through standardized geometry and precise machining tolerances, each segment maintains stable shear and mixing zones, preventing process fluctuations.

Q2: What is the difference between tool steel and PM-HIP materials?
A2: Tool steels like W6Mo5Cr4V2 and SKD61 offer excellent hardness and toughness, while PM-HIP materials (e.g., CPM10V) provide superior wear and corrosion resistance under extreme loads.

Q3: Can ZHITIAN customize screw elements for special polymers?
A3: Yes. We design and produce customized screw elements based on polymer viscosity, filler ratio, and throughput requirements.

Q4: How do you guarantee compatibility with my extruder brand?
A4: All screw elements are fully interchangeable with global extruder models from leading OEMs. CAD verification ensures dimensional alignment before production.