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Single screw and barrel for extruder

Specification:
Screw Diameter: Ø15- Ø300
L/D ratio: 15-46
Product classification:
Aiming at different plastic products the screw can be chosen from: general type, pin type, barrier type, separation type, and vented type, etc.


Application: 
ABS, PP, PE, PA66, LCP, PC, EVA, PS, U-PVC, PVC, PU, etc
 

Technical Information Base Materials:
1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)

Technics:
Heat treatment
Nitriding treatment


Technical parameter:
Nitrided layer depth:0.5-0.8mm
Nitrided hardness:900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: :≥950HV
Chrome-plating layer depth:0.025-0.085mm
Bimetallic layer depth:3mm
 

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