Nitriding process,Bimetallic layer of this single screw and barrel.
Specifications of this single screw and barrel:
diameter: Φ15mm~ Φ250mm
length:300mm~8000mm
external diameter:Φ40mm~Φ400mm
L/D: 10~46
Technical indexes:
38CrMoALA, Nitriding hardness:HV850~1000, Nitriding depth:0.45~0.7mm, surface roughness:Ra0.4, screw straightness:0.015mm, Chromium plated hardness:>900HV, Chromium layer thickness:0.05-0.10mm, twin-alloy depth:0.8~2.0mm, twin-alloy hardness: 60~70
Product types:
almost all kinds of single-screw types can be made.
Scope of application:
PP, PE, PS, EVA, ABS, PVC, APC, PMMA pelletizing, foaming,sheet and plate extruder etc.
single screw and barrel
