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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

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