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°
Co rotating parallel twin screw-screw elements

process specification of screw and barrel:

    Ф60/2, Ф65/2, Ф70/2, Ф72/2, Ф75/2, Ф80/2, Ф85/2, Ф90/2, Ф93/2, Ф100/2, Ф105/2, Ф110/2,Ф115/2, Ф120/2, Ф125/2, ...


screw material:


 raw material:  The finished product Processing requirements:
 38CrMoAlA,SACM645,42CrMo  Nitriding treatment
 42CrMo,AISI 4140  Hard chrome coated layer
 Cr12MoV,SKD11,SKD61,YXMI,EFZD,DC53,SKH55,SKH59,SKH58,SKH51,SKH-9,ASP60,ASP30,ASP25,CW6Mo5Cr4V2  Alloy steel


screw elements--HRF10 Extremely superfi ne diamond tungsten steel

Has the extremely good abrasion resistance performance,but slightly less s...

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