Specifications

The mixed section makes the molten mass evener and BM section makes melted materials separate in the liquidoid spiral channel faster so that the rest solid materials can contact with heat cylinder and be melted better so as to improve the revolving speed and the output.

Technical Parameter:

Quenching and Tempering Hardness  HB280-320

Screw Straightness  0.015mm

Nitriding Hardness  HV850-1000

Nitrided Chromium Coating Surface Hardness≥900HV

Depth of nitratin case:0.45-0.7mm

Chromium Coating Thickness   0.025~0.10mm

Nitridng Brittleness   2 Level

Duplex Alloy Hardness  HRC50-65

Surface Roughness  ≤Ra0.4

Depth of dual alloy:0.8-2mm

Our Qunying company is the leader screw and barrel manufacturer in China,we have been in this industry for more than 15 years.we are good at making most types of Extruder Screws/barrels, Injection Molding Screws/barrels, Twin Screws and Rubber Screws used in the plastic and rubber industry.

We established quality control system strictlyas ISO 9001:2008 International Quality System.In addition,we got SGS certificate.Every product wil be very extremely  inspected before ex-factory.