What are the common PE butt welding machine failures and solutions?

1. Power failure:
Possible causes: Power line failure or unstable power input.
Solution: Make sure the power line connected to the welding machine is good and use a stable power supply.
2. Unstable arc:
Possible causes: Electrode wear, unstable power supply or loose cable connection.
Solution: Check the electrode status regularly, keep the power supply stable, and ensure that all connections are firm.
3. The arc cannot be ignited:
Possible causes: Electrode wear, power failure or poor contact between the electrode and the workpiece.
Solution: Make sure the electrode is intact, keep the power supply working properly, and contact the workpiece correctly.
4. Overheating:
Possible causes: Continuous welding time is too long or the ambient temperature is too high.
Solution: Pay attention to controlling the welding time and avoid using the welding machine in a high temperature environment.
5. Circuit board failure:
Possible causes: Long-term use causes the circuit board to age or get damp.
Solution: Timely maintenance and keep it dry to avoid humid and high temperature environments.
6. Cold welding:
Possible causes: The butt welding machine fixture stroke is not enough or the fixture speed is too fast during butt welding.
Solution: Ensure that the travel allowance of the clamp is not less than 20mm, control the machine speed evenly, and make the welded part fully fused.
7. Incomplete welding:
Possible reasons: Insufficient heating time, especially when the ambient temperature is below 10°C and the wind is strong.
Solution: Adjust the heating time appropriately according to the different models and specifications of the pipe.
8. Carbonization of weld:
Possible reasons: Heating time is too long.
Solution: Strictly control the heating time to avoid carbonization of polyethylene PE pipe when the heating time is too long.
9. Misalignment and cracks:
Possible reasons: Misalignment or tilt of weldment assembly, overheating of weldment, excessive extension length, insufficient rigidity of welding machine, etc.
Solution: Improve the rigidity of the equipment, reduce the extension length and appropriately limit the forging allowance.
10. Incomplete welding and white spots:
Possible reasons: The temperature at the interface before forging is too low, the forging allowance is too small, the forging pressure and forging speed are low, and there are too many metal inclusions.
Solution: Use appropriate butt welding process parameters.