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why hdpe pipe extrusion line breakdown ?
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why hdpe pipe extrusion line breakdown ?

Views:11     Author:Site Editor     Publish Time: 2019-06-23      Origin:Site

The high-density polyethylene pipe extrusion line useshigh-efficiency extruders, special high-density polyethylene and polypropylene pipes. However, such a production line will also encounter troubles in the production process. How to solve the problems on the extrusion production line?



Outline:

  •  what is HDPE Pipe Extrusion Line?

  • How to know line common faults and treatment methods´╝č



what is HDPE Pipe Extrusion Line?



The hdpe pipe extrusion line is a spiral die designed for HDPE and PP large-diameter thick-walled pipes. The die has the characteristics of low melt temperature, good mixing performance, low cavity pressure and stable production.


The hdpe pipe extrusion line is applied to urban water supply networks, irrigation water diversion projects and agricultural sprinkler irrigation projects, especially for plastic pipes resistant to acid and alkali and corrosion. Since the hdpe pipe extrusion line adopts hot-melt and electric-heat fusion connection, the interface and the pipe are integrated, and the hoop stress and axial impact stress generated by the pressure can be effectively resisted, and the hdpe pipe extrusion line does not add heavy metals. Salt stabilizer, non-toxic, non-scaling, no bacteria, avoiding secondary pollution of drinking water.


The hdpe pipe extrusion line should not only have good economy, but also have a series of advantages such as stable and reliable interface, material impact resistance, crack resistance, aging resistance and corrosion resistance. Compared with traditional pipe, HDPE pipe system has a series of advantages.



How to know common faults and treatment methods?


1.Hdpe pipe extrusion line abnormal noise

(1) If it occurs in the reducer, it may be caused by damage to the bearing or poor lubrication, or it may be caused by gear wear, improper installation adjustment or poor meshing. It can be solved by replacing the bearing, improving the lubrication, replacing the gear or adjusting the meshing condition of the gear.

(2) If the noise of the hdpe pipe extrusion line is a sharp scraping sound, the position of the barrel should be considered to be skewed, resulting in the possibility of scraping the shaft head and the drive bushing. Can be solved by adjusting the barrel.

(3) If the barrel of the hdpe pipe extrusion line emits noise, it may be a screw bending broom or setting the temperature too low to cause excessive friction of solid particles. It can be handled by straightening the screw or increasing the set temperature.


2.Hdpe pipe extrusion line abnormal vibration

If this happens at the reducer, it is caused by the wear of the bearing and the gear. It can be replaced by a replaceable bearing or gear. If it occurs at the barrel, it is because the material is mixed with hard foreign matter, and the material should be inspected for cleaning.


3. The main reason for the screw extruder wear of hdpe pipe extrusion line

The normal wear of the screw and barrel of the screw extruder mainly occurs in the feeding zone and the metering zone. The main cause of wear is caused by the friction between the sliced


4.Hdpe pipe extrusion line screw wear solution

The local damage of the screw thread is repaired by surfacing the special anti-wear and anti-corrosion alloy. Inert gas shielded welding and plasma argon arc welding are generally used. Metal spray technology can also be used for repair. Firstly, the outer surface of the worn screw is ground to a depth of about 1.5 mm, and then the alloy layer is surrounded to a sufficient size to ensure sufficient machining allowance. Finally, the outer diameter of the screw and the side of the thread are screwed to the outer dimensions of the screw. original size.


5.Hdpe pipe extrusion line screw entry at the screw inlet

This type of failure is mainly caused by the cooling water interruption or insufficient flow. It is necessary to check the cooling system and adjust the cooling water flow and pressure to the specified requirements.in conclusion

(1) The extruder of the hdpe pipe extrusion line has a long natural life, and its service life mainly depends on the wear of the machine and the wear of the gearbox. Choose design materials and well-made extruders and speed reducers, directly off

It is tied to the use performance. Although the equipment investment is increased, the service life is prolonged and it is reasonable from the overall economic benefit.

(2) The screw extruder of the hdpe pipe extrusion line is used normally, which can fully exert the performance of the machine and maintain a good working condition. It must be carefully maintained to extend the life of the machine.

(3) The main failures of the screw extruder of the hdpe pipe extrusion line are abnormal wear, foreign matter jamming, blockage of the block, wear or damage of the transmission parts, poor lubrication or oil leakage. In order to avoid failures, the drying, mixing and feeding operations and process temperature settings must be strictly managed.



The hdpe pipe extrusion line uses a proprietary sizing and cooling system that uses water film lubrication and water ring cooling to meet HDPE and PP material requirements, ensuring high-speed production of thick-walled tubes that are stable in diameter and roundness.For krah pipe and water pipes also applies .If you want to know how to anything else, please send email to us, our sales team will help for you 


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