| Model Number: | screw and barrel for plastic extruder ,machine |
|---|---|
| Brand Name: | shenglong |
| Place of Origin: | China (Mainland) |
| Nitride Case Depth: | 0.5mm-0.8mm |
| Nitride Hardness: | 950-1050HV |
| Nitride Brittleness: | less than Grade One |
| Surface Roughness: | Ra0.4um |
| Screw Straightness: | 0.015mm |
| Alloy Hardness: | HRC58-65 |
| Alloy Depth: | 0.8mm-3.5mm |
| Chromium Coating Thickness: | 0.025~0.10mm . |
Quick Details
Specifications
screw diameter : 15mm-300mm
maximal length: 8000mm
barrel inner diameter: 15-300mm
maximal length: 4000mm
base materials:
1.38 CrMoAIA(JIS SACM645)
2.42CrMo(AISI4140)
3.9Cr18MoV
4.CW6Mo5Cr4V2
5.SKD61
bimetallic alloy maerials:
1.Fe-based alloy
2,Ni-based alloy
3,Co-based alloy
4.NiCo-based alloy
5.Tungsten carbide
Heat-treatment
Nitriding treatment
Electroplate hard-chrome
High-frequency quenching
Spraying corrosion wear-resisting dual metal layers
Vacuum quenching
Technical parameter
Depth of Nitrated Layer: 0.5-0.8mm
Hardness of nitration: 900-1020Hv
Fragility of nitration: Less than grade 1
Surface roughness: Ra 0.4um
Hardness of Cr-coating Layer: ≥950Hv
Thickness of Cr-coated Layer: 0.03-0.08m