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  • Product Center

    Extruder single screw barrel


    Screw diameter: 15-300

    Length diameter ratio: 15-46


    Product type:

    Screw for different plastic products can be selected: common type, pin type, barrier type, separation type, exhaust type, etc

    Base 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

    Straightness of screw: 0.015mm

    Hardness of surface chromium plating layer after nitriding: ≥ 950hv

    Thickness of chromium plating layer: 0.025 ~ 0.085mm

    Double alloy depth: 3mm