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      Focus on Conical twin screw, barrel production and sales

      Service hotline: 13857229638

      Conical twin screw

      About Qiyu

      All kinds of screw barrels produced by our company are made of 38CrMOALA alloy steel. After quenching and tempering, finishing, and surface ammoniation treatment, they can also be electroplated (hard chromium plated on the surface), and the screw surface is sprayed with double alloy. The barrel surface uses the advanced production process of bimetallic technology, the centrifugal casting method, so that the products have high wear resistance, corrosion resistance, improve life and other advantages, and can replace imported products.

      Conical twin screw

      Product materials

      Alloy-Steel of High-Quality
      38CrMoALA(JIS SACM645)
      42CMo(JIS SCM440)
      9Cr18MoV
      CW6Mo5Cr4V2

      Heat treatment

      Nitriding treatment
      Electroplated hard chromium layer
      High frequency quenching
      Spray corrosion resistant and wear-resistant bimetallic layer
      Vacuum quenching

      Technical indicators

      Nitriding layer depth:0.5~0.8mm
      Nitriding hardness:950~1020HV
      Nitriding embrittlement:Less than grade 1
      Surface roughness:Ra 0.4um
      Screw straightness:0.015mm
      Double alloy hardness:HRC55-62
      Double alloy thickness:>2mm

      Screw type
      For different plastic properties, screws with different structures can be selected to improve the plasticizing effect, such as gradual, abrupt, wavy, barrier, double screen, shunt, separate, exhaust, pin, mixed, double headed, triple headed, multi headed, etc.

      Screw and barrel specifications

      Specification(d/D)
      Working length(mm)
      Extrusion ability(Kg/h)
      Rotation speed of screw(rpm)
      Φ35/Φ77
      810
      40-70
      5~50
      Φ45/Φ90
      990
      50-80
      5~45
      Φ50/Φ105
      1070
      100-150
      4~45
      Φ51/Φ105
      1220
      100-150
      4~45
      Φ55/Φ110
      1220
      120-180
      4~40
      Φ60/Φ125
      1320
      150-200
      4~40
      Φ65/Φ120
      1440
      200-250
      4~40
      Φ65/Φ132
      1440
      200-250
      4~40
      Φ70/Φ140
      1460
      220-300
      4~40
      Φ75/Φ150
      1480
      250-300
      4~35
      Φ80/Φ143
      1800
      300-360
      4~35
      Φ80/Φ156
      1660
      300-360
      4~35
      Φ92/Φ188
      2000
      400-500
      4~35

       

      Product application scope

      PVC plastic steel profile
      PVC resin tile, PE corrugated pipe
      PVC, PE, PP wood plastic profiles
      PVC, PP, PE, PC, ABS and other profile extrusion
      PVC wood plastic (foam) door panel, decorative board and other wide plate
      PS, PET, PC, PMMA, TPU and other profiles

      Zhoushan Qiyu Machinery Co., Ltd

      Zhoushan Qiyu Machinery Co., Ltd. is a professional manufacturer of screw and glue cartridge in China. The company has strong technical force, advanced process equipment, production facilities and perfect testing facilities to ensure that the production quality meets the requirements. From various screw design: alloy spray welding to various specifications of single screw, tapered, parallel twin-screw; Production of PVC, EVA, TPR, TR, screw, barrel, etc. All of them are of high standard and precision and have won the trust of customers.

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