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Conical Twin Screw & Barrel


Process specification of screw and barrel:
Ф15/Ф30,Ф25/Ф55,Ф35/Ф75,Ф40/Ф83,Ф45/Ф90-99,Ф48/Ф112-117,Ф50/Ф105-110,Ф51/Ф105-120,Ф55/Ф110-125,Ф58/Ф125,Ф60/Ф125-129,Ф65/Ф120-132,Ф68/Ф147,Ф70/Ф150,Ф74/Ф156-162,Ф80/Ф143-156-162,Ф86/Ф177,Ф92/Ф184-188,Ф95/Ф193,Ф105/Ф203


Types of screw:
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.


Scope of application:
WPC PVC, WPC PE, Super high molecular sheet, 1/2 high Calcium buckle, 50-400 high Calcium pipe, 50-300 high Calcium Profile, soft PVC sheet, XPS-PVCetc, PP, PE, ABS, PVC, raw material, pelletzing, pipe, profile, sheet etc.


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

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