The principle of electric fusion welding for PE pipes

With the widespread application of PE pipes, the corresponding welding methods for this product are also increasing due to our needs. One of the more commonly used methods is electric fusion welding. Many people are interested in the principle of electric fusion welding for PE pipes. Let's learn about it together:
Usually, we use an electric fusion welding machine to heat the resistance wire embedded in the inner wall of the electric fusion pipe, and use the heating energy to connect the PE pipe and the pipe. After the gap between the two ends of the pipe is closed, the molten material in the interface melting zone of the PE pipe usually diffuses with each other under high temperature and pressure. When the depth of mutual diffusion at the interface reaches the size determined by the chain entanglement, the naturally cooled interface has the necessary welding strength to form a reliable welding connection for the pipe.
Whether reliable welding connections can be formed for PE pipes mainly depends on the design of the electric fusion fittings, the temperature and characteristics of the resistance, the stability of the power supply voltage provided by the electric fusion welding machine, and the material properties of the fittings and pipes.
In summary, we can see that when performing electric fusion welding on PE pipes, it is necessary to heat the PE pipes in advance. This not only enhances the strength of the pipes but also achieves good welding results.