Screw & Barrel for Rubber Machine

Short Description:


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

    Technical Parameter:
    Diameter of screw: φ15-φ500
    L/D ratio: 15-55
    Maximal length:10000mm
    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)

    Technologies:
    Nitriding
    Hard chrome plating
    High-frequency quenching
    Vacuum quenching
    Alloy powder spray welding


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