PVC-R injection screw barrels

• Specification

Screw diameter: Ø12-300MM L/D:15-55
Barrel diameter:  Ø25-500MM      Length:300-1000MM

• Material

38CrMoAlA(JIS SACM645)

Cr12MOV(JIS SKD-11) 
4Cr5MoSiV1(JIS SKD-61) 
42CrMo(AISI 4140)

9Cr18MoV
Stainless steel,etc.

• Parameter

Screw barrel for extruding Rigid PVC,hard chrome plating treatmentis recommend.

Hard Chrome Plating treatment:

Thickness of Hard Chrome Plating Layer: 0.03-0.08mm

Hardness of Hard Chrome Plating Layer: ≥950HV

• Feature

A barrier screw is recommended for extruding rigid pvc pipe,pvc profile,etc.

The barrier screw design separates melted material from unmelted solid material into sepatate channels.
This unique mixing feature thoroughly homogenized the melt with little or no increase in its average temperatue.Mixing is achieved with an undulating root profile in the metering zone of the screw.