Common problems and solutions in Extrusion Line of PE Pipe(1)

In the process of extrusion line of PE pipe, because the operator is not skilled in the process and machine operation, it often causes the plastic pipe to have a rough outer surface, a jitter ring inside, uneven wall thickness, and insufficient roundness. Therefore, it is necessary to adjust the process in time to eliminate The failure of the plastic pipe production line can improve the product quality.

1. Plastic pipe production line failure: the outer surface of the plastic pipe is rough
Adjust the process temperature; reduce the cooling water temperature, the best cooling water temperature for the PE pipe is 20-25 °C; check the water channel for blockage or insufficient water pressure; check whether the heating ring such as the barrel and the head is damaged; adjust the water inlet of the sizing sleeve flow; check the performance and batch number of the raw materials; check the temperature of the core of the mold, if it is higher than the temperature of the die section, lower the temperature of the core; clean the aggregate of the mold;

2. Failure of the plastic pipe production line: groove marks appear on the outer surface of the plastic pipe
Adjust the water pressure of the sizing sleeve, and the water output should be balanced; adjust the angle of the nozzle in the vacuum sizing box to cool the pipe evenly; check whether there are sundries, burrs, etc. in the die, sizing sleeve, cutting machine and other hardware;

3. Plastic pipe production line failure: groove marks appear on the inner surface
Check whether the inner pipe has water. If water enters, pinch the tube blank that has just exited the mold to seal the inner cavity; reduce the internal temperature of the mold; clean and polish the mold;

4. Plastic pipe production line failure: jitter ring appears inside the pipe
Adjust the water outlet of the sizing sleeve to make the water outlet uniform; adjust the vacuum degree of the second chamber so that the vacuum degree of the rear chamber is slightly higher than that of the front chamber; check whether the vacuum gasket is too tight; check whether the tractor has jitter; Whether the material is uniform;