Technology diffusion bonding polyethylene pipes using welding equipment

Apparatus for welding of polyethylene pipes.

many people remember from the school course that the high and low pressure polyethylene, refers to a thermoplastic polymer and by increasing the melting point begins to lose its connection to the polymer chain.At this stage, the molecule may be mixed together two polymeric materials, and cooling to obtain a compound which by their characteristics would equal parts connected in quality.polyethylene melting temperature is low, and therefore, the time for welding will take quite a bit.It all depends on the thickness of the welded pipes and seam will withstand at intermolecular bonds.

As mentioned earlier - welding equipment for PE pipes is not a sophisticated high-tech design.In fact - is the same soldering, by which the product must be heated to its melting temperature, it does not exceed the polymers 270ºS.The package also includes a set of equipment of different diameter nozzles for supplying heat in the welding zone.The diameter of the tip must match the diameter welded pipes.Also in the arsenal of any welder must be:

• measuring tools (calipers, rulers, tape, etc.);
• sets of keys and screwdrivers to fix the electric welding nozzles and contacts;
• special tool - cutter;
• reducing agent for the end of the pipe, the so-called calibrator;
• tool for chamfering the ends of the pipe.

As can be seen from the above, the apparatus for welding plastic tubes includes a very simple set of necessary equipment, which is in the "bins" of any good master

various welding technologies PE pipes.

If you ask qualified professionals engaged in welding of polyethylene pipes in Kazan, about the different methods of these works, we get three ways:

• welding plastic pipe butt;
• docked into the socket;
• connection using electric welding.

Any way pipe mount using the welding machine must consider several moments, allowing to obtain a compound of excellent quality:

1. pipes connections must belong to the same manufacturer and be from the same party.Then you will be guaranteed to have the same chemical composition of the parts.Also note thickness and pipes that are joined.If this value is different for the two products, there is a chance "subcooled" element with more walls, and as a result increases the probability of obtaining low-quality weld.Be sure to clean the
2. dirt pipe ends, you will ensure that sufficient tightness of the joint.
3. Adverse weather conditions also affect the quality of welding.Such work can not be carried out at a strong frost and rain as polyethylene with cold compresses, and yet it is prohibited requirements of electrical and machine for welding of polyethylene pipes - Elektroapparat.Strong solntsepёk also needed in the implementation of the pipeline installation of welding equipment.
4. wait full cooling of the weld, so as not to break the polymer chain and stop the process of diffusion of molecules of polyethylene.