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          Parallel Twin Screw Barrel


          Φ65/2 Φ80/2 Φ90/2 Φ105/2 Φ125/2 Φ130/2 Φ150/2 Φ180/2 Φ200/2
          Aspect ratio: L / D = 18 ~ 25
          L/D ratio: 16-35
          The compression ratio of screws can be designed according to different products and ingredients

          Base Materials:
          (1)38CrMoAlA(JIS SACM645)
          (2)42CrMo(AISI 4140)

          Bimetallic alloy materials:
          (1)Fe-based alloy
          (2)Ni-based alloy/Deloro alloy
          (3)Tungsten carbide/Wolfram carbide

          Technical Indicators
          Heat treatment
          Nitriding treatment
          Bimetallic alloy welding
          Bimetallic alloy centrifugal casting
          Double alloy hardness: HRC55-62

          Technical Parameter:
          Nitrided layer depth: 0.5-0.8mm
          Nitrided hardness: 950-1020Hv
          Nitrided brittleness:≤ 1
          Surface roughness: Ra0.4
          Linearity of screw: 0.015mm
          Bimetallic layer depth: 3mm

          Copyright 2008,Zhoushan Jianghai Screws Manufacture Co., Ltd. All Rights Reserved.

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