Traction speed of PE pipe production line: During the production process, as PE pipes are thermosensitive materials, even if heat stabilizers are added, it can only increase the decomposition temperature and prolong the stability time without decomposition. This requires strict control of the forming and processing temperature of PE pipes. Therefore, the extrusion temperature should be determined based on factors such as formula, extruder characteristics, head structure, screw speed, temperature measurement point position, temperature measurement instrument error, and temperature measurement point depth.
The traction rate of the PE pipe production line directly affects the output of pipe production and also affects the wall thickness of the pipe. Unstable traction rate can cause the diameter of the PE pipe to fluctuate. The traction speed should be closely coordinated with the extrusion rate of the pipe material. During normal production, the traction speed should be slightly 1% to 10% faster than the extrusion line speed. The slower the traction rate, the thicker the pipe wall, and the faster the traction rate, the thinner the pipe wall. This will also increase the longitudinal shrinkage rate and internal stress of the PE pipe, thereby affecting the pipe size, qualification rate, and usage effect.
The following simple method can be used to adjust the traction speed during production. Put the extruded PE pipe in the traction track, but the track does not clamp the pipe. Observe the difference between the speed of the track and the PE pipe. If the traction speed is slower than the extrusion speed, adjust it until the wall thickness meets the requirements.