STS 65 Twin Screw Extruder Screw Elements High Dimensional Stability Parts For WPC Plastic Wood Extrusion

STS 65 Twin Screw Extruder Screw Elements | High Dimensional Stability Parts for WPC Plastic Wood Extrusion

STS 65 screw elements are professional modular twin screw components designed for STS65 co-rotating twin screw extruders. With an outer diameter of 62.4mm, these screw segments are widely used for wood plastic composite extrusion, puffed food processing and powder coating material compounding.

The biggest feature of this series screw elements is excellent dimensional stability. In WPC production, wood powder and fiber will cause continuous friction and thermal pressure on the screw surface. Ordinary screw parts are prone to deformation and size deviation after long-time operation, which leads to unstable plasticization, uneven output and poor product surface quality.

Adopting precision CNC machining and vacuum quenching treatment, these STS65 screw elements maintain stable tolerance and consistent geometric size during long-term continuous production. It effectively solves common production problems such as material leakage, unstable feeding and fluctuating product density, ensuring stable and reliable extrusion performance.

• Stable Dimensional Accuracy – Professional stress relief treatment greatly reduces thermal deformation and wear deviation. Screw flight size remains consistent after long-hour high-load operation.
• High Wear Resistance – Vacuum quenched treatment ensures hardness up to HRC 58-62, strongly resisting abrasion caused by high-content wood fiber and powder fillers.
• Multi-Material Adaptability – Optional tool steel, high-performance PM HIP alloy and anti-corrosion steel to adapt to wear, corrosion and complex extrusion environments.
• Complete Structural Types – Includes conveying segments, kneading blocks, transition elements, deep groove transfer blocks and side feeder special screws to meet different extrusion process needs.
• Good Compatibility – Fully matched with standard STS65 twin screw extruder parameters, realizing direct replacement without machine adjustment.
• Low Residue & Easy Cleaning – Smooth surface reduces material adhesion, convenient for formula switching and daily equipment maintenance.

STS65 high-stability screw elements are suitable for various twin screw extrusion processes, including PE/PP/PVC wood plastic composite profiles and pellets, grain puffed food production, industrial powder coating materials and modified plastic compounding. It is ideal replacement parts for continuous and stable extrusion production.