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      Porduct Name: Bimetal single barrel   [back]

      Bimetal single barrel

      Range of universal plastic:Engineering plastic of ABS, PP, PE, PA66, LCP, PA+GF, PET+GF, PBT+GF and PC+GF added glass fiber.
      Machining dimension:from minimum screw Φ15 to super large screw Φ350, upper limit length 8000mm.
      Surface roughness:Ra0.4um
      Screw straightness:0.015mm

      Technical parameter of double alloy

      Screw base metal
      Anti-stretching (Kgf/mm2)
      Elasticity modulus (Kgf/mm2)
      Percent of elongation (%)
      Fatigue limit (Kgf/mm2)
      Hardness(Hv)
      38CrMOALA
      (SACM645)
      90
      19000
      14
      30.2
      950-1020

       
       Screw alloy
      Anti-stretching (Kgf/mm2)
      Elasticity modulus (Kgf/mm2)
      Percent of elongation (%)
      Fatigue limit (Kgf/mm2)
      Hardness(Hv)
      Stellite alloy
      90
      19000
      2.5
      ----
      58-65

       With one layer 2-3mm wear-and corrosion-resistant, high temperature resistant alloy is cast on inner wall, the bimetal barrel has longer effective service life than common nitriding barrel, and has obvious bimetal advantages on machining glass fiber engineering plastic, fluorine plastic, polysulfone and PPO special type.

      Hongfa screw barrel uses high quality alloy powder of ASSBA or Stellite to spray weld alloy on screw gap. Depending on screw with different functions, we will use high temperature centrifugal casting or different matching and welding modes.

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