Views: 0 Author: Site Editor Publish Time: 2021-09-24 Origin: Site
The pipe spool fabrication line has unique structure, high degree of automation, convenient operation, stable and reliable continuous production. The pipes produced by this pipe spool fabrication line have moderate rigidity, strength, good flexibility, creep resistance, environmental stress cracking resistance and good thermal welding performance, and have become the first choice for urban gas pipelines and outdoor water supply pipes. However, there are still some problems when using the pipe spool fabrication line.
Here is the content list:
l Failure of the production line and corresponding measures.
l Computer system failure and corresponding measures.
l Pipe spool fabrication line failure and corresponding measures.
l The outer surface of the pipe spool fabrication line is rough
① Adjust the pipe spool fabrication line of process temperature: reduce the cooling water temperature, the best cooling water temperature of the PE pipe is 20~25℃
② Check whether the waterway is blocked or the water pressure is insufficient;
③ Check whether the heating ring of the barrel, head, etc. is damaged;
④ Adjust the water flow of the sizing sleeve;
⑤ Please consult the raw material supplier for the raw material parameters of the batch;
⑥ Check the mold core temperature, if it is higher than the die temperature, reduce the mold core temperature;
⑦ Clean the mold;
l Grooves appear on the outer surface of the plastic pipe
① Adjust the water outlet pressure of the sizing sleeve, and balance the water output;
② Adjust the nozzle angle in the vacuum forming box to evenly cool the pipeline;
③ Check the mold, sizing sleeve, cutting machine and other hardware for debris and burrs;
l There is a jitter ring inside the pipe spool fabrication line
① Adjust the water outlet of the sizing sleeve to make it even.
② 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;
③ Check whether the vacuum seal is too tight;
④ Check whether the tractor is shaking;
⑤ Check whether the host output is even;
l The outer diameter of the pipe spool fabrication line is out of tolerance
① Adjust the vacuum to change the size of the outer circle;
② Adjust the traction speed to change the outer ring size;
③ Correct the size of the inner hole of the sizing sleeve;
l Uneven wall thickness of pipe spool fabrication line
① Adjust the wall thickness of the mold; adjust the nozzle angle in the vacuum setting machine and spray box to uniformly cool the pipeline.
② Adjust the water outlet of the sizing sleeve to make it even.
③ Disassemble the mold, check whether the screws in the mold are loose, and then tighten it again;
Computer system failure
When the computer is turned on or running, pipe spool fabrication line is not allowed to enter the test state.
l Problem 1: The tensile strength and toughness are poor. The tensile strength curve of pipe spool fabrication line should have obvious yield strength and greater elongation, while poor plastic pipes are usually fragile, low elongation and easy to break.
l Problem 2: Poor impact resistance. According to the GB/T5836.1-92 standard, the drop hammer impact test was tested. After years of testing, it was found that the pass rate was only less than 50%, and many pipe spool fabrication line were even damaged by 10 times.
l Problem 3: The softening temperature is low and it is easy to deform after being heated. It is shown in the test performance, that is, the Vicat softening temperature is relatively low (less than 79). Some manufacturers only increase the amount of filler during the compounding process to increase the softening temperature.
This can indeed increase the softening temperature, but will greatly reduce the other properties of the pipe, especially impact resistance, tensile strength and toughness. Therefore, in order to increase the softening temperature without reducing or seldom reducing other properties, attention must be paid to the selection of additives, the ratio of raw materials, the production process and the production machinery, Can not be taken lightly.
Pipe spool fabrication line is tested in accordance with the national standard GB/T10002.1-1996, and its hydraulic inspection performance standard value requirements are relatively high, which puts forward high requirements for enterprises that produce pipe spool fabrication line. The eccentricity problem is one of the common plastic pipe problems, which will result in large uneven wall thickness of the produced plastic pipes, which not only causes waste of raw materials, but also makes it difficult for the water pressure test performance to meet the requirements.
The operation of the pipe spool fabrication line has a great impact. Therefore, this requires manufacturers not only to match the materials well, but also to install online testing equipment so that qualified companies can adjust the size deviation of the plastic pipe at any time.