We can supply and design all kinds of Single Screw & Barrel For Plastic Extruder Machine according to your requirement. We use Japan numerical control and computer control processing device to process screw.
T
he single screw and barrel for extruder have the following specification :

* 1 12289; The single screw and barrel material:
A 12289; 38CrMoAlA. This kind of material is applicable to double alloy and common molding screw
B 12289 9Gr18MoV
C 12289 42CrMo

* 2 12289 Technical :

A 12289 Heating treatment
B 12289 Nitriding treatment
C 12289 Spray bimetallic alloy coating

* 3 12289 Technical parameter:

A 12289 Depth of Nitration layer: 0.5-0.8mm
B 12289 Hardness of Nitration :900-1000HV
C 12289 Fragility of Nitration: less than grade 1
D 12289 Roughness of the surface:: Ra0.4
E 12289 Straightness of the screw: 0.015mm
F 12289 Surface hardness of Nitrated Cr coating layer>=950HV
G 12289 The thickness of Chrome-plating layer: 0.025-0.085mm
H 12289 Depth of alloy layer.>2mm.