• 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