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
Plastic Extruder

The normal material of Screw and Barrel:

Hardness after hardening and tempering:HB260°~320°
Nitrided Hardness:HV950°~1000°
Nitrided Depth:0.50~0.7mm
Nitrided Brittleness:above 2 stage
Surface Roughness:Ra0.4
Screw straightness:0.015mm
Hardess of surface chromium-plating after Nitriding:HV≥950HV
Chromium-plating Depth:0.05~0.10mm
ALLoy Depth:0.8~2.0mm
Alloy hardness:HRC56°~65°
Accessories of screw and barrel for injectiong molding machine

Screw head, non-return valve, meson,flange  and  nozzle  Material

Parent material:G H 1 1 3,H P T,M P T,C r 1 2 M o V,S K D 1 1,S K D 6 1,S K D 3 8,Y X M,E F Z D,D C 5 3,S K H 5 5,S K H 5 9,S K H 58,SKH51,SKH-9,ASP60,ASP30,ASP25,CW6MO5CR4V2

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