parallel twin screw&barrel,Nitriding process,Bimetallic layer of this parallel twin screw and barrel.

Specification of this parallel twin screw and barrel for extruded

PX-62~200

Length-diameter ratio:L/D=18~25

The screw compression ratio should be decided based on different ingredients and different products.

Technical indexes:

38CrMoALA, Nitriding process, Nitriding hardness: HV950~1000, ,Nitriding layer depth:0.45~0.7mm, surface roughness:Ra0.4, screw straightness: 0.015mm, Chromium plated hardness: >900HV, Chromium layer thickness: 0.05~0.10mm, twin-alloy depth:0.8~2.0mm;

twin-alloy hardness: 60~70

The product introduction in brief:

PVC pipe,special shaped,plate,sheet can be processed by the machine set which is with this screw and barrel. The pelletizers are alsocan be fitted with this unit.