Bimetallic extruder screw and barrel

high quality and high cost-effective.

ISO2000-9001 Certification.

Professional designer of screw barrel.

High quality screw.

Bimetallic extruder screw and barrel

Specification:

For screw: Dia. 15-300 mm Length 300-9000 mm L/D ratio: 15-50

For barrel: Dia. 30-500 mm Length 300-8000 mm



Material Available:

Nitriding Steel: 42CrMo, 38CrMoALA, etc

Cool work steel: D2, SKD61, 9Cr18MoV etc.

Heat resistant steel: SKH51, GH113 etc.



Technical Index

Steel Material 38CrMoALA,SKD61.,D2 etc.

Hardness after Hardening&Termpering HB240-280

Nitriding Treatment 96 hours

Surface Hardness 58-64 HRC

Nitrided layer depth 0.5-0.8mm

Surface Roughness Ra0.4

Screw Straightness 0.015mm

Chromium-Plated Surface Hardness after nitriding 900HB

Chromium-Plating Layer Thickness 0.05-0.10 mm

Bimetallic Layer Hardness 50-65 HRC

Depth of Alloy Layer 0.8-2.0 mm



Grade List

Grade Material Process

Standard grade 38CrMoAlA Nitriding 96 hours

Bimetallic grade 38CrMoAlA HP/HVOF

TC-A grade Tungsten carbide 40% Centrifugal casting

TC-B grade Tungsten carbide 25% Centrifugal casting

TC-C grade Tungsten carbide 10% Centrifugal casting