Extruder screw barrel for blowing film extruder machine

Location:China
Business Type:Manufacturer, Exporter
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  • Material: 38 CrMoAlA(JIS SACM645); 42 CrMo(JIS SCM440)
    Depth of nitrogen layer: 0.6~0.8mm
    Nitrided Brittleness: above 1 stage
    Surface Roughness: Ra0.4 um
    Screw straightness: 0.015mm
    Hardess of surface chromium-plating after Nitriding: HV≥950HV
    Chromium plating Depth: 0.025-0.085mm
    Alloy Depth: 2.5mm-4mm

     

    Products Are Processed By The Following Steps:
    Hot Treatment
    Nitriding Treatment
    Electroplating Hard-chrome layer
    Hi-frequency Quenching
    Spray Coating Bimetallic Layer Of Corrosion And Abrasion Resistant
    Vacuum Quenching