Bimetallic Screw and Barrel (Snail and Cylinder) for Plastic Machines

Suitable for PP, PE, PC, PVC, PA, GF

Specifications
1. Material: 38CrMoAlA
2. Treatment: Nitrided/bimetallic/WC coating
3. Customer-made/OEM
4. Design service

It is good at processing products in high temperature and high corrosion, suitable between 300~500 ° C

Application: Various high glass fiber, mineral fiber and PPA, PPS, PA6T, LCP, Vo Fire protection, ferrous powder and plastics with special characteristic, high temperature and high corrosion.

Technical specification:

Hardness after Hardening&tempering: HB280-320
Nitrided Hardness: HV850-1000
Nitrided Case Depth: 0.45-0.7mm
Nitrided Brittleness: Less than Grade 2
Surface Roughness: Ra 0.4
Screw Straightness: 0.015mm
Surface Chromium-plating's Hardness After Nitriding: ≥ 900HV
Chromium-plating Depth: 0.025~0.10mm
Alloy Hardness: HRC56-65
Alloy Depth: 0.8~2.0mm
Bimetallic Depth: 1.5mm~5mm
The hardness of the bimetallic HV950~1100

1. We could design for you for any Genneral plastic materials (such as PP, PE, ABS, AS, PS, PC, PET, PA, PVC, PMMA, TPU, PU etc. ) and Engineering plastic materials(such as ABS+PC, BMC, LCP, PPS, PAR, PA-6, PA-66, PA9T, PA4T, CPVC, PVDF, POM, Glass fiber etc. )

2. We could also design special screws such as special for PVC, PP, PE etc.

The compression ratio of the screw canbe designed according to different products and mixtures.