We are a professional manufacturer of screw and barrel for 17years,we can supply and design all kinds of screw&barrel according to your requirments
base material
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
| 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 |
| Appliance | PVC, PP, PE, PA, PC, ABS, AS etc |
| guarantee period | a year |
if there is any need ,please contact us.
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