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
Rubber screw

cool feeding rubber screw and barrel:
    Large aspect ratio:L/D=8-20

hot feeding rubber screw and barrel:
    Large aspect ratio:L/D=4-8

pin rubber screw and barrel:
    Large aspect ratio:L/D=12-18

types of screw

For good plasticizing effect,we have different design of screw barrel to meet customer's demand.Gradual type,mutant type,wave type,barrier type,double screen type,shunt type,separation type,exhaust type,pin type,mixed type,double-head type,three-head type,multi head type etc.



Screw material


 raw material  The finished product Processing requirements
 38CrMoAlASACM64542CrMo  Nitriding treatment
 42CrMoAISI 4140  Hard chrome coated layer
 4Cr5MoSiV1SKD-61SKD-11  Spraying bimetal alloy layer and nitrding treatment
 YPT72DAC-MAGIC4 Cr5MoSiV1  Whole bimetallic cladding stainless steel
 HPM38SI36SUS4409Cr18MoV  High frequency quenching
 GHII3  Nature hard after high temperature


barrel material


 raw material  The finished product processing requirements
 38CrMoAlASACM645  Nitriding treatment
 Cr12MoVCr12  Alloy steel
 38CrMoAlASACM64540CrAISI414042CrMo  Bimetallic of the inner hole centrifugal casting
 GHII3  nature hard after high temperature

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