HDPE comes from the abbreviation of the English word “High-Density Polyethene”. Hdpe welding machine is computer-controlled. One of 3 types of joining method is selected for HDPE welding. These methods are butt welding electrofusion welding or joining with extrusion welding. Joining parameters vary according to DVS 2207-1, DVS2207-11, ISO 21307 standards.
With the correct application of the quality, operator, temperature, pressure and time parameters of the welding process, the welding process in accordance with the standards is completed.
HDPE, obtained from petroleum, is known as a high-density polyethene material. Although it is strong, solid and heavier than LDPE, especially against other polyethene options, it has a much harder structure. It is generally referred to in this way in industrial areas along with the manufacturing sector. It must be said that it has a much lighter structure than water.
It can be produced using two different methods. One of them is the extrusion method and the other is the casting technology. It can be combined using welding options under the special structure. At the same time, it allows processing by putting machine tools. But it is not possible to join them using adhesive.[lwptoc]
HDPE Welding Fittings
HDPE fittings offer a special resistance against all kinds of effects. Therefore, it is specially manufactured within the scope of intensive polyethene production. It is especially resistant to chemicals and water. On the other hand, even though it is not resistant to open air and light; Its resistance can be increased with special additives such as carbon black. This provides a longer-lasting structure and provides a strong resistance to outdoor conditions. On the other hand, its mechanical properties are of very high quality. As a matter of fact, it provides a special strength against tensile and different impacts. It can be improved by using some fillers.
HDPE Usage Areas
HDPE, which has a wide range of uses, provides long-lasting evaluation as well as durable design. It is used in gas distribution pipes, pressure pipes, drums, bottles and barrels, white goods, electrical and electronic equipment, various machine parts connected to the sector, and toys.
By being evaluated in many areas such as these, its usage area continues to expand with each passing year. Due to its water-resistant structure, it has started to be used in boat and warehouse construction today.
Joining parameters differ according to DVS 2207-1, DVS2207-11, ISO 21307 standards.
The welding process in accordance with the standards is completed by applying the quality of the welding process, the parameters of the operator, temperature, pressure and time correctly. WELDCODE app has been made to follow welding parameters in a healthy way. It is very simple and effective to use in field conditions.
The process of joining plastic pipes and fittings made of HDPE-PP-PVDF material by butt welding, electrofusion welding or extrusion welding is completed. Joining parameters differ according to DVS 2207-1, DVS2207-11, ISO 21307 standards.
The welding process in accordance with the standards is completed by applying the quality of the welding process, the parameters of the operator, temperature, pressure and time correctly.
The most accurate test method for the approval required to be buried underground of the pipeline after the completed welding process is the application of hydrostatic pressure.
The welding operator or the butt welding master who will perform the butt welding process of HDPE-PP-PVDF material products should choose the joining parameters according to DVS 2207-1, DVS2207-11, ISO 21307 standards.
In the welding process, it is very important for the butt welder to comply with the correct pressure, correct temperature, correct time parameters and cleaning and correct alignment processes as it will determine the welding quality.
The butt welder must have attended the certificate program organized by the authorized institution.