Product show of conical screw and barrel-1

Conical twin screw barrel
March 12, 2025
Category Connection: Twin Screw Extruder Parts
Brief: Let’s dive in — see this solution in action and notice the key moments. This video showcases the BLM 80/156 92/188 Twin Conical Screw and Barrel for PVC extrusion, demonstrating its operation and highlighting how it delivers superior plasticization, high productivity, and stable pressure in processing PVC products like plates, pipes, and profiles.
Related Product Features:
  • Designed for PVC extrusion with advantages of lower rotation speed and smaller shear stress.
  • Offers good plasticization, high productivity, and stable pressure for consistent output.
  • Features less wear and tear and low cost, ideal for high-output PVC production over 350Kg/h.
  • Available in various screw barrel types including gradual, mutant, wave, barrier, and exhaust types.
  • Constructed from high-grade materials like 38CrMoAlA and 42CrMo with nitrided hardness up to HV1000.
  • Bimetallic alloy options include Fe-based, Ni-based, Co-based, and tungsten carbide for enhanced durability.
  • Surface treatments include nitriding and chromium plating for superior hardness and corrosion resistance.
  • Solves technical challenges in low/high foaming, high filling, wear, and corrosion applications.
FAQs:
  • What are the main advantages of using a conical twin screw and barrel for PVC extrusion?
    The conical twin screw and barrel provide lower rotation speed, smaller shear stress, excellent plasticization, high productivity, stable pressure, reduced wear and tear, and cost-effectiveness, making them ideal for high-output PVC processing.
  • Which materials are used in the construction of these screw and barrel sets?
    They are made from high-performance materials such as 38CrMoAlA (SACM645), 42CrMo (AISI 4140), 4Cr5MoSiV1 (SKD-61), and others, with nitrided hardness up to HV1000 and optional bimetallic alloys including iron, nickel, tungsten, and molybdenum for enhanced durability.
  • What types of PVC products can be processed with this conical twin screw and barrel?
    This screw and barrel are successfully used for processing PVC plates, pipes, profiles, pellets, and molds, and they address technical issues in low foaming, high foaming, high filling, wear, and corrosion applications.