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Good quality of PE pipe

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Good quality of PE pipe

2011/9/1 11:11:41 Source: Huafeng Pipe Industry
    PE water pipe to a building water supply system, vigorously develop the Chinese market for PE pipe, the products have been beyond the building water supply, the gradual development of applications for many industries, such as: urban underground pipe network,ground source heat pumps, landfill, irrigation, and so on. The quality of the pipe is the focus of attention by the manufacturers and the use of units, how to grasp the quality of the pipe?After years of experience accumulated PE water pipe developed a set of stable production technology.
    The first said that under the PE pipe processing, critical to the quality of many factors in this intermediate pipe. For example: the choice of raw materials, temperature, screw speed, compressed air, traction, speed, traction cooling impact of PE pipe.
    1, A selection of raw materials is also the first factor is the most basic: PE raw materials, a wide range of specification grade, just to name a few, the same grades of raw materials can produce PE corrugated pipe but not the production of PE pipes. Here or on their own a lot of trial, to choose their own production of pipe material.
    2, the influence of temperature on the quality of PE pipes: temperature affect the main factors of the production of plastics and plastic pipe, the temperature is too low, plastics is not good, the temperature is too high, the material is easy to decompose. The temperature control should be based on the original formula, extrusion machines and head structure, the screw speed and other factors to determine. Machining of hard pvc pipe, due to the processing temperature and decomposition temperature is quite close to the production of material temperature should be strictly controlled. While paying attention to the the Thermometer errors and the location of measurement points.
    3, Screw speed on the pipe quality: the choice of screw speed direct impact on productivity and quality. The screw speed depends on the size of the extruder and side depends on the diameter size. Increase speed and extrusion increased, the material by shear force will help the plasticizing of the material, but the shorter residence time of material within the screw excessive frictional heat pipe wall is rough, pipe strength decreased Therefore, the screw speed control should be based on production, product appearance and physical and mechanical performance requirements of a comprehensive trade-off.
    4, the traction speed factors on the quality of PE pipe: traction speed directly affect the product wall thickness. Towing speed should be compatible with the extrusion speed, high-speed traction faster than pipe extrusion 1% to 10%.
    5, compressed air pipe quality: compressed air so that the tube shape and maintain a certain roundness. The pressure is generally 0.02 ~ 0.05mpa.
    6, traction cooling pipe quality: this I believe we have a better understanding of cooling up to make less than extrusion material adhesion can not be stereotyped. Preferably using air-cooled and water cooled, the cooling water temperature is maintained at about 15 °.
    The above points, then if you are able to reach the pipe produced is absolutely through the detection of high-quality tube.
    
    

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