What should be paid attention to in hot melt connection of ppr pipe? What are the key points of hot melt connection of ppr pipe?

Ppr pipes are all for daily use. ppr pipes are not only corrosion-resistant and not turbid, but also very reliable. Mainly used for water intake or drainage pipelines. In the process of engineering construction, the connection between ppr pipes must be hot-melted. If you never know how to make a good connection, you don't know the key points in the whole connection process. What are the key points of hot melt connection of _ppr pipe? What should be paid attention to in hot melt connection of ppr pipe? We will explain it for you.

Key points of hot melt connection of ppr tube

1. Prepare special welding tools and ppr pipes; Secondly, turn on the fuser for heating, and gradually weld when the temperature reaches 300 degrees; Once again, accurately insert the points where the two ends of ppr pipe align with the spare parts; Finally, check whether the welding of ppr tube is neat, and adjust it quickly if there is any error.

What should be paid attention to in hot melt connection of ppr tube

1, the pipeline should be clean and tidy.

Before welding PPR pipes, it is necessary to ensure that the pipes are clean and dry. That is to say, there should be no stains such as oil, dust and residue on the surface of PPR pipe, otherwise, in the process of hot melting, the stains will fuse with some welded pipes, which is likely to leave gaps or flow into the inner cavity of the pipes, polluting the water body. When welding PPR pipe, the pipe body must be kept dry. If there are water drops on the wall of PPR pipe, there are likely to be bubbles during welding, which will cause the safety hazard of welding.

2, the wound should be flat

The wound of PPR tube should be smooth, tidy and burr-free. If the wound pipe is inclined, the pipe and the pipe are easily not on a parallel line during welding, and the PPR pipe welded by electric welding will be incorrect. Moreover, the overlapping length of PPR pipe and pipe in the connector is inconsistent, which will have a certain impact on the hot welding joint when running water passes through, shortening the service life of the connector.

3. The temperature of the fuser is sufficient.

The temperature that PPR pipe should reach when it is hot-melted. The raw material of PPR pipe is pure and single, and the hot melting temperature is usually around 260℃. Naturally, in summer, it is easy to melt PPR pipes; However, in severe winter, the visibility of hot melt temperature is moderately improved. For example, in the south, the hot melting temperature of PPR pipe can be increased by 5℃, and in the north, it can be increased by 10℃- 15℃ to ensure the actual welding effect.

4, hot melt time should be appropriate.

The hot melting time of PPR tube should be adjusted in an effective range. The hot melting time is too short, the pipes and pipes are not heated enough, and the melting is not complete. It seems that the welding is good, but in fact it is likely to be off-welding, or even the welding is very firm, so it is very easy to leak water during pressure test. The hot melting time of PPR pipe is too long, and it can be welded firmly with a little force, but there is a disadvantage that the joint is very easy to be too thick, which makes the pipe shrink and reduces the water output.

5, can't turn when connected.

When welding PPR pipe, there is no need to rotate. It may destroy the molecular structure of PPR raw materials, reduce the universality of PPR pipes, and even shorten the service life of pipes.