Parallel Twin Screw and Barrel

Short Description:

Customized parallel twin-screws and barrel

 


  • Min.Order Quantity: 1 Set
  • Supply Ability: 150 Set per Month
  • Port: Ningbo or Shanghai
  • Payment Terms: T/T
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  • Product Detail

    Technical parameter:
    Diameter of screw: Ø45-Ø200
    L/D ratio: 16-35
    Hardness after hardening and tempering: HB280-320
    Nitriding hardness: 950-1100HV
    Nitrided layer depth: 0.5-0.8mm
    Nitrided brittleness: Less than grade 2
    Surface roughness: Ra0.4
    Linearity of screw: 0.015mm/m
    Bimetallic layer depth: ≥3mm
    Bimetallic hardness: HRC60-72
    Hard-chrome plating hardness after nitriding: ≥950HV
    Chrome-plating layer depth: 0.025~0.10mm

    Material:
    High-quality alloy steel
    38CrMoAlA (JIS SACM645)
    42CrMo (AISI 4140)
    9Cr18MoV

    Treatment:
    Nitriding
    Hard-chrome plating
    Alloy powder spray welding


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