Conical Twin Screw

  • By Harden
  • 1 August, 2013
  • Comments Off on Conical Twin Screw

Harden Industries offer parallel / conical twin screw  , single screw & barrel , Screw & Barrel For Extruder and Plastic Machine, Screw & Barrel For Injection Molding Machine, and all kinds of barrels.Conical Twin screw is designed for greater output, superior performance and higher profits.

Benefits of Conical Twin Screw:

  • Ideal for heat and shear-sensitive materials.
  • Wide processing window for a large number of shapes at the highest possible output rates.
  • Large diameter feed zone provides the surface area and residence time for gentle plasticizing and a fully homogenized melt.
  • Optimized L/D based on discharge diameter of the screws
  • Conical twin screw is shorter with larger diameter shafts reducing screw deflection inside the barrel and extending the life of both screw and barrel.
  • The barrel swivels for rear removal of screws without the need to remove tooling and downstream equipment.

Conical Twin Screw Technical Date

Steel MaterialDIN 41CrA1Mo7 / AST M4140/ GB 38CrMoAlA, 9Cr18MoV
Heat TreatmentTempered and nitride, nitride depth: 0.5 mm – 0.7
Screw straight tolerance0.015 mm/m
Special treatment:Carbide coating (screw flight) and bimetallic barrel
Surface hardness:HV900 – HV1, 000
Surface roughnessRa 0.4μm
  • Packed in wooden crate
  • Manufacturing lead time: one month
  • Material: Nitroloy 38CrMoAlA
  • Optional bimetallic screws: Base material is 38CrMoAlA, welded tungsten carbide on the flight.

Conical Twin-screw Conical Twin-screw

 

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