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› › Welding of polyethylene pipes

Welding of polyethylene pipes

Given the high impact resistance, elasticity, corrosion and chemical resistance to the external environment, the most reliable, economical and durable way to connect a PE 80 pipe, which our Internet portal offers today, is nothing more than butt welding of polyethylene pipes.

In the process called “welding of polyethylene pipes”, a number of activities that precede the welding stage itself, as well as those that follow it, play a very important role. First of all, welding of polyethylene pipes will require preventive control work – this is a check of the technological readiness and serviceability of equipment, the qualifications of welders, quality control of materials that will be welded, as well as the selection of equipment for welding in accordance with its performance indicators.

Since butt welding of polyethylene pipes is heating the ends of the pipes to be welded, followed by the connection of two heated to a certain temperature and viscous state with a heater, under high pressure, followed by removal of the heater, it is very important to prepare a special place for these works. This place, where I will go through all the stages of welding polyethylene pipes, should have enough space, both for preparatory work related to cleaning the surfaces and insides of the edges of the pipe, and for the subsequent removal of the heater and performing such a stage of welding polyethylene pipes as, cooling.

Important points when welding polyethylene pipes

1. Taking into account the approximate values of the main parameters for the welding mode of some thermoplastics (the tool is heated). PE pipe welding

2. On average, the time interval between the removal of the heater and the upsetting of the pipes should not be more than 1-2 s;

3. Before welding of polyethylene pipes begins, do not forget about the need for alignment and assembly. This will help to avoid protrusions and gaps after welding.

4. Control in the process, referred to as welding of polyethylene pipes, is mandatory, and this is due to the fact that for each type of surface there is its own, clear parameter of the butt welding mode. And also, the parameters of the time for cooling.

5. The upsetting of pipes after removing the ends from the heater should be carried out at lightning speed, since any delay in every fraction of a second threatens to lose the tightness and reliability of the joint.

In conclusion, it is worth mentioning the main advantages that butt welding of polyethylene pipes has:

  • automatic welding of polyethylene pipes completely eliminates the human factor, and this, in turn, allows you to get the highest level of welding quality;
  • Companies providing the service not only carry out constant automatic control at all stages of work, but also give a written opinion on each of the welded joints;
  • welding of polyethylene pipes allows you to clearly control the operation of the welding machine, which means controlling not only the operating time of the machine, but also the number of PE80 pipes being welded and a clear number of joints.