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Extruder screw

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Specifications:  Screw diameter: ? 15-? 300  Aspect ratio:

Specifications: Screw diameter: ? 15-? 300 Aspect ratio:

  • 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