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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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