Common problems and solutions in Extrusion Line of PE Pipe(2)

5. Extrusion Line of PE Pipe failure: no vacuum

Check whether the water inlet of the vacuum pump is blocked, if it is blocked, clear it; check whether the vacuum pump works normally; check whether the vacuum pipeline is leaking;

6. Extrusion Line of PE Pipe failure: the outer diameter of the pipe is out of tolerance

Adjust the size of vacuum to change the size of the outer circle; adjust the traction speed to change the size of the outer circle; correct the size of the inner hole of the sizing sleeve;

7. Extrusion Line of PE Pipe failure: the roundness of the pipe is out of tolerance

Adjust the angle of the nozzles in the vacuum setting machine and the spray box to cool the pipes evenly; check the water level in the vacuum setting machine and the spray box, and the pressure of the water pressure gauge to make the spray volume large and powerful; check the vacuum setting machine and the spray box If the water temperature is higher than 35°C, it is necessary to configure a chilled water system or add a spray cooling box; check the water circuit, clean the filter; adjust the process; check and correct the inner hole circularity of the sizing sleeve; The ovality of the pipe;

8. Extrusion Line of PE Pipe failure: uneven wall thickness of the pipe

Adjust the wall thickness on the mold; adjust the angle of the nozzles in the vacuum setting machine and the spray box to make the pipe cool evenly; adjust the water outlet of the sizing sleeve to make the water outlet evenly; disassemble the mold, check whether the screws inside the mold are loose, and re-tighten them; 
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