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Nanjing Lesun Screw Co., Ltd.
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  5. Lesun - Two-fighted Screw Elements for ...

Lesun - Two-fighted Screw Elements for Buss Type Extruders

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Two-fighted screw elements are integral components for Buss type extruders, designed to enhance the efficiency and effectiveness of material processing. These elements come in various materials and undergo specific heat treatments to ensure optimal performance and longevity. They are engineered to facilitate the transition and conveying of materials within the extruder, providing a stable and controlled environment for processing. The two-flight design aids in improving throughput and reducing wear, providing a balanced operational workflow. The screw elements are compatible with additional configurations such as single-flighted or transition elements to suit varied industrial applications and material specifications.
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Two-fighted conveying screw elements, under the conditions of Do/Di ranging from 1.55 to 1.8, achieve the optimal balance between free volume and high torque bearing capacity, thus dominating in the co-rotating twin screw compounding extruders. The Two-fighted conveying screw elements with long-pitch are prevalently utilized in the screw feeding zone and the venting zone, where the material is typically partially filled. Short-pitch screw elements are mainly employed for pressurization or to space kneading blocks to increase residence time and facilitate material melting.
 
Model：Φ18mm~φ400mm
Material：N00/W6/HIP
Properties: Wear-resisting, Corrode-resisting and Durable
 
  • The nitrided steel, N00 72h two-stage gas nitriding);
  • The high-speed tool steel, W6 (vacuum quenching);
  • The die steel, D2(1.2379, SKD11,K110)  (quenching + tempering);
  • The bimetal composite rods (inside tough, outside hard or corrosion resistant), supplied by SAAR company from
  • German or HTM company from Swiss;
  • Other special materials such as Hastelloy, W-C, nickel-based alloy, etc.
  1. Excellent material performance
  2. Short and limited residence time
  3. Good self-wiping