Single screw and barrel for extruder

Product Details

Specification:

Screw diameter:Ø15-Ø300

Aspect ratio:15-46

Product type:
For different plastic products screw can be used: ordinary type, pin type, barrier type, separation type, exhaust type and so on.

Base material:

1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)

Process:

Heat treatment

Nitriding treatment

Technical Parameters:

Nitriding depth: 0.50mm-0.80mm
Nitriding hardness: 900-1000HV
Nitriding: <= Level 1
Surface roughness: Ra 0.4
Screw straightness: 0.015mm
The hardness of the surface after chrome plating:≥950HV
Chromium layer thickness: 0.025~0.085mm
Double alloy depth: 3mm