Product Description
Pinned barrel and screw for cold-feed extruder machine
Φ60mm-Φ250mm L/D ratio: 12-18
Screw and barrel for cold-feed extruder
Φ45mm-Φ300mm L/D ratio: 8-20
Screw and barrel for hot-feed exterder
Φ45mm-Φ250mm L/D ratio: 4-6
Materials
38CrmoAIA
Duplex stainless Steels
GH3#
Power Metallurgy Raw Material
Cold/Thermal Spray Hard Metal Process
Advanced Nitriding Process
Corrosion&Abrasion Resistance Bimetal Spraying Process
Technical Index
| Product |
Screw&Barrel |
| Tempering hardness |
HB240-280 |
| Hardness of nitrogen treatment |
HV950-1000 |
| Depth of nitrogen layer |
0.55-0.70 |
| Nitrided brittleness |
Less than grade 1 |
| Surface roughness |
Ra 0.4 |
| Screw straightness |
0.015mm |
| Hardness after nitriding |
≥900HB |
| Chromium-plating depth |
0.05-0.10mm |
| Alloy hardness |
HRC55-62 |
| Alloy Depth |
1.5-2.0mm |
Production Process
- BlankingRough MachiningQuenching and TemperingSemi Finishing MachiningFinish MachiningNitriding or Bimetallic TreatmentDetectingFinished ProductDebugging after the Sale
Our Service
Warranty and service: 1years
Our Advantages
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly
Audited Supplier 
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