NANJING LESUN SCREW CO.,LTD

The Key Points of Starting the Extruder

When using the extruder, it is necessary to frequently check whether there is foreign matter in the barrel which such as sand or metal powder is not allowed to be mixed into the raw materials. Check the lubricating oil parts of the extruder, fill the lubricating oil, and the temperature of the bearing parts should not exceed 50℃ when working. The extruder barrel should have enough constant temperature heating time, and it is not allowed to start production under the condition of lowering the raw material temperature. When the screw is working, start at a low speed and work for a period of time, and then increase the screw speed after everything is normal. If there is no raw material in the barrel, the screw is not allowed to run idly for a long time. Keep an eye on the swing change of the ammeter pointer of the screw drive motor. If the motor is overloaded for a long time, stop immediately, find the cause of the fault, and continue production after troubleshooting. After the extruder barrel is heated to the process temperature for the first time, tighten the fixing bolts connecting the barrel and the base again. When installing the mold and the screw, the contact surface of the parts should be clean and free of any foreign matter. Fastening bolts should be coated with a layer of silicone oil to facilitate the disassembly of parts. When disassembling the extruder, it is not allowed to hit the surface of the part with a heavy hammer. If necessary, pad and hit the hardwood with a hammer to disassemble the part.


When cleaning the residual material on the barrel, screw and mold of the extruder, only bamboo or copper knife can be used to brush the material, and steel knife is not allowed to scrape the sticky material, let alone the fire.

  • Maintenance of Extruder Screw

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  • Why Are the Screw and Barrel Destroyed?

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    November 5, 2021The combined working quality of the screw and barrel has an important impact on the plasticization of materials, product quality and production efficiency. Their work quality is related to the manufac...view
  • Precautions and Working Process of Extruder Barrel

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    September 26, 20211. Precautions for the extruder barrel1. After the extruder barrel heats up, remove the nozzle, the head coupling body of the extruder barrel, and take out the extruder screw. Brush the inner wall of ...view
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