1、 PE gas pipe hot melt docking

1. When using this method for connection, a hot melt butt welding machine is used, and the main operating steps are as follows

① After completing the debugging of the welding machine, place the pipe to be connected on the welding machine fixture and clamp it tightly;

② Clean the pipe to be connected end and use a planer to mill the connecting end face to straighten the two mating parts, so that the displacement is not greater than 10% of the pipe wall thickness:

③ After the temperature of the heating plate reaches the set required temperature, place it in the heating plate for heating:

④ After heating is complete, remove the heating plate, quickly start the oil pump to press the heating surface of the two pipes, and increase the pressure to the fusion pressure to maintain pressure and cool down:

⑤ After cooling to the specified time, open the fixture and remove the pipe from the rack, observe the rolled edges to determine the quality of the connection, and the connection is complete.

2. Quality inspection method for hot melt butt joint PE gas pipe
① The determination of the quality of hot melt butt welding still mainly relies on non-destructive visual inspection of the welded edges. Usually includes visual inspection of the geometric shape of the rolled edge and inspection of cutting off the rolled edge, bending the rolled edge backwards to confirm whether there is insufficient fusion in the connection.
② Ultrasonic testing and X-ray testing have applications abroad.
③ Destructive testing. Perform tensile test, bending test, and tensile creep test on the interface cut separately
Change experiments, etc.

3. Hot melt docking precautions: PE gas pipe
① Follow the procedures and precautions for using docking equipment;
② Operators must wear gloves, work clothes, and take self-protection measures to avoid electric shock or burns;
③ The heating plate surface and the connecting end face of the connector should be kept clean:
④ The docking pressure needs to be adjusted to the actual required value for on-site connection:
⑤ Polyethylene pipes cannot be heated with open flames;
⑥ During welding, the interface should be protected from sand and rainwater.