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CHINA SCREW BARRELs manufacturer

    Product Category

  Parallel Twin Screw & Barrel  
Parallel Twin Screw-Barrel High surface area, low shear screw designs for efficient heat transfer...
  Conical Twin Screw & Barrel  
Professional customized Conical Twin Screw-Barrel designs matched specifically to the customer process requirements for optimal performance...
  Single Screw Barrel For
Injection Molding Machine
Professional Approved test,quality Built for Reliable,Long-Term Operation Bimetallic barrel for long life,Single Screw Barrel For Injection Molding Machine...
  Twin Screw Barrel For Extruder  
Twin /Single Screw Barrels For Extruder Machine,Heat Treatment,Nitriding Treatment,Electroplate Hard Chromium Coating,Spray Coating Hard Chromium Coating,Anticorrosion, wear Resistant Bimetallic Coating
  Assembly Parts  
Assembly Parts Of Screw & & Barrels, End cap, Flange, Adaptor, Cooling Ring, External & Internal spring nozzle for nylon...


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The Parallel Twin Screw & Barrel classification


Velocity measurements inside the screw channels of a co-rotating, self-wiping, twin-screw extruder were carried out. A laser Doppler anemometer (LDA) system was used to measure tangential and axial velocity components in the translational region of one of the screws of a twin-screw extruder. The velocity measurements were carried out using heavy corn syrup at different screw speeds and for two forwards conveying elements differing in their pitch. It was found that velocity profiles in the translational region were substantially affected by the pitch of the screw element, however, screw speed (30–90 r.p.m.) did not have a significant effect on the shape of the velocity profiles. The range of velocity values in a 14 mm pitch screw element was wider than that in a 28 mm pitch screw element. Experimentally measured velocity profiles were compared with predictions of a one-dimensional model, which showed that the model underpredicted the velocity values, for the 14 mm pitch element.


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