Screw For Injection
Accessories of
Screw & Barrel For
Conical Twin Screw
Parallel Twin Screw
The Bimetallic
Rubber screw
planet screw
Co rotating parallel
Gearboxes series
All types of screw
Material application
Advanced
Plastic Extruder


The normal material of Screw and Barrel:

Material:38CrMoALA
Hardness after hardening and tempering:HB260㡫320
Nitrided Hardness:HV950㡫1000
Nitrided Depth:0.500.7mm
Nitrided Brittleness:above 2 stage
Surface Roughness:Ra0.4
Screw straightness:0.015mm
Hardess of surface chromium-plating after Nitriding:HV950HV
Chromium-plating Depth:0.050.10mm
ALLoy Depth:0.82.0mm
Alloy hardness:HRC56㡫65
Alloy:iron,nickel,tungsten,molybdenum.

 

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