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What is the welding temperature requirement for hot melt pipe of PE water supply pipe?


Release time:

Sep 21,2019

PE water supply pipes are divided into low-density PE pipes, medium-density PE pipes, high-density PE pipes, and ultra-high molecular weight PE pipes according to materials. The welding methods and heating temperatures used for different pipes are different. Small diameter or thin wall with socket way, and hot melt PPR pipe is the same, but the heating temperature is different. Low density 160 degree, medium density 190 degree, high density and ultra high molecular weight with 210-decorative knowledge 235 degree. Large diameter requires a special hot melt machine, which is basically divided into 160, 250, 315, 450 and 630 models. Docking (that is, pipes and pipes are directly melted and connected) can also use electricity.

PE water supply pipes are divided into low-density PE pipes, medium-density PE pipes, high-density PE pipes, and ultra-high molecular weight PE pipes according to materials. The welding methods and heating temperatures used for different pipes are different. Small diameter or thin wall with socket way, and hot melt PPR pipe is the same, but the heating temperature is different. Low density 160 degree, medium density 190 degree, high density and ultra high molecular weight with 210-decorative knowledge 235 degree. Large diameter requires a special hot melt machine, which is basically divided into 160, 250, 315, 450 and 630 models. Butt connection (that is, pipe and pipe are directly melted and connected) can also be connected by electric fuse without welding rod, pipe connection or direct butt connection.
PE pipe hot melt butt main attention four points
Welding temperature, time, pressure, cleanliness of the welding surface, the temperature is determined according to the grade of raw materials, PE100 is 215-235 ℃,PE80 is 200-220 ℃, time and pressure are determined according to the pipe and welding machine, the welding surface must be clean. The quality of welding seam is mainly determined by program control, and the judgment is based on appearance: flanging is uniform and symmetrical, with moderate height; The surface is smooth and free of degradation; There is no bump mark, and the lowest point of the weld is higher than the surface of the pipe. No cracking occurs in the back bending test weld.
The hot melt of PE pipe generally uses a hot melt machine to hot melt, and a problem often occurs during hot melt. Because of the different raw materials used, the hot melt speed of pipe fittings and pipes is inconsistent;
Influence of Summer and Winter on Hot Melt Temperature of PE Water Supply Pipe
When the temperature is high in summer, it can be around 200 ℃, and when it is cold in winter, it can be around 220 ℃.
Welding PE pipe, suitable temperature of hot melt machine
The temperature of the hot plate 280 200~230 ℃ does not need to look at the model, look at the pipe wall, the simplest method for welding thick pipe wall for a longer time: the pipe and pipe fittings are heated at the same time, and the head of the fusion splicer can be fully advanced. Very simple, pay attention to the pipe fittings and pipe connection is not moving, 230-280 ℃, 250 to 300 ℃ between the adjustment according to the situation.






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