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°~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°
Alloy:iron,nickel,tungsten,molybdenum.
 
Screw &Barrel For Extruder
 

process specification of screw and barrel:

specification:Ф15-Ф360MM
The ratio of length to diameter:L/D=12-45

types of screw:

For good plasticizing effect,we have different design of screw barrel to meet customers 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.

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Screw material(click material applicaton and Mechanical properties for details)

 

 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
 4Cr5MoSiV1,SKD-61,SKD-11  Spraying bimetal alloy layer and nitrding treatment
 YPT72,DAC-MAGIC,4 Cr5MoSiV1  Whole bimetallic cladding stainless steel
 HPM38,SI36,SUS440,9Cr18MoV  High frequency quenching
 GHII3  Airset after high temperature

 

barrel  material(click material applicaton and Mechanical properties for details)

 

 raw material:  The finished product processing requirements:
 38CrMoAlA,SACM645  Nitriding treatment
 Cr12MoV,Cr12  Alloy steel
 38CrMoAlA,SACM645,40Cr,AISI4140,42CrMo  Bimetallic of the inner hole centrifugal casting
 GHII3  Airset after high temperature

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