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    Extruder screw

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    Extruder screw

    Extruder screw

    • Specifications:
       
      Screw diameter: Ø 15-Ø 300
       
      Aspect ratio: 15-46
       
       
       
      Product type:
       
      For different plastic products, screw can be selected: common type, pin type, barrier type, separation type, exhaust type, etc
       
      Substrate material:
       
      1)38CrMoAlA(JIS SACM645)
       
      2)42CrMo(AISI 4140)
       
       
       
      Treatment process:
       
      heat treatment
       
      Nitriding treatment
       
       
       
      Technical parameters:
       
      Nitriding depth: 0.50mm-0.80mm
       
      Nitriding hardness: 900-1000hv
       
      Nitriding brittleness: < = grade 1
       
      Surface roughness: RA 0.4
       
      Screw straightness: 0.015mm
       
      Hardness of surface chromium plating after nitriding: ≥ 950hv
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