Material for high quality twin conical screw and barrel for plastic extruder:

1)38CrMoALA(JIS SACM645)

2)42CrMo(JIS SCM440)

3)9Cr18MoV
4)CW6Mo5Cr4V2

Technical parameter for high quality twin conical screw and barrel for plastic extruder:

Screw diameter  12mm-500mm

Screw alignment  0.015mm

Nitride brittleness  ≤Grade 1

Depth of nitride layer  0.5~0.8mm

Hardness of nitride  Hv900-1020

Quenching and tempering HB240-280

Surface roughness  0.045mm

Performance and specification

1)We design our brand, screw and barrel .We make sure the course of processing smoothly.

2)With almost 10 years' experience in plastic machinery,we have a well quality control system.Screws are processed by high-precision special NC screw milling machines to ensure high consistency extruding performance. We try our best to lower the cost of your budget and supply high quality screw and barrel .The special design of distribution cainet enlarges thrust bearing and adopts original bearings, guaranteeing the long service life and the bearing of larger extrusion capacity.

3)With suitable moulds, our screw and barrel can make high quality soft PVCpipes, hard PVC pipes ,profiles,sheets,master batch and so on.

4)According to customer requirements , most reasonable screws and barrrels can be configured to achieve optimal plasticization and logistic quality.

5)Process :Laser coating Tungsten Carbide,PTA melt-welding alloy,centrifugal mould  bimetallic  alloy, advanced nitrogen oozes handicraft ,vacuum quenching ,Titanizing,Nickel  plating and Chorme Plating.