With the development of the times and the improvement of people's material and cultural living standards, many people have begun to pay more attention to the construction of public infrastructure in cities. As a relatively important part of public infrastructure, the construction of urban water supply systems has naturally received more and more attention. In order to ensure the quality of urban water supply system infrastructure, relevant technical personnel began to try to use PE water supply pipes for water supply and drainage, and the use of PE water supply pipes has achieved better water supply and drainage effects. The following will conduct in-depth research and analysis on the hot-melt welding construction technology of PE water supply pipes.
PE water supply pipe butt fusion welding construction technology
Compared with water supply pipes made of other materials, PE water supply pipes have incomparable advantages over water supply pipes made of other materials. First of all, compared with other water supply pipes, PE water supply pipes have more perfect flexibility. Furthermore, the impact resistance of PE water supply pipes is much better than that of ordinary material water supply pipes. Secondly, the corrosion resistance of PE water supply pipes is also strong, and the corrosion resistance is good, which means that PE water supply pipes can have a longer life than other types of water supply pipes. Considering these aspects, PE water supply pipes are an important part of urban water supply system construction at this stage.
Overview of welding process
In order to improve the butt fusion welding construction technology of PE water supply pipes, it is first necessary to conduct an in-depth understanding and analysis of the current PE water supply pipe welding process. As far as the current stage is concerned, there are many techniques that can be applied to the welding process of PE water supply pipes. The traditional butt fusion welding method can naturally be applied to the welding of PE water supply pipes. In addition to butt fusion welding, electric welding, ultrasonic welding and other methods can also be used as welding methods for PE water supply pipes. However, compared with other methods, the traditional butt fusion welding method is still a welding method with a wider range of applications and is easier to implement. Using this method does not require too high a cost, and has important advantages such as rapid heating and easier quality of welded joints. However, it should be noted that using this welding method for welding has high requirements for the welding skills of the welder, and there are many factors that may affect the welding effect and quality during the entire welding process. This will be researched and analyzed below.
Influencing factors and improvement measures
There are many factors that can affect the welding effect and quality, which can be analyzed from three aspects: temperature, time and pressure. But it should be noted that the time here does not only refer to the melting time, the length of the heat absorption time will also affect the welding effect and quality. The pressure here does not only refer to the melt pressure, the welding pressure will also affect the welding effect and quality.
Let's start with the temperature analysis first. If the welding temperature is outside the established range during the welding process, the welding temperature is likely to be higher than the degradation temperature of the PE material. Due to the material degradation of the PE water supply pipe welded at such a temperature, its toughness and strength cannot reach the strength and toughness that the water supply pipe material in the urban water supply system should achieve. This will affect the welding effect and quality of the entire water supply pipe, and even affect the probability of triggering dangerous accidents when the entire urban water supply system is put into use in the future. Of course, in addition to the fact that too high a temperature will affect the welding effect and quality of the entire welding process, too low a temperature will also affect the welding effect. If the temperature is too low, the fluidity of the melt will deteriorate, so that the thermal movement intensity of the entire molecule will be reduced. Therefore, from the perspective of temperature, no matter whether the welding temperature exceeds the predetermined range or does not reach the predetermined range, it will have a greater impact on the welding effect. If the relevant technical personnel want to make the welding effect and quality not change due to the influence of temperature, it is necessary to control the welding temperature during the whole welding process so that the welding temperature is kept within the predetermined range. Only in this way can the whole welding The effect reaches the most ideal stage.
As mentioned above, there are two time factors that can affect the welding effect and quality, one is the melting time, and the other is the heat absorption time. For the melting time, there is also a certain amount of range in the whole welding process. If the melting time is too long, it is easy to make the amount of melting glue on the welding surface exceed the normal standard, which will make the effective area of the entire PE water supply pipe smaller, which will have a negative impact on the use of the entire PE water supply pipe. If the time of the sol has not reached the appropriate range, it is likely that the amount of sol on the welding surface cannot reach the standard, which will cause the phenomenon of weak welding. This reduces the effectiveness and quality of the entire welding process. Therefore, for relevant technicians, it is very meaningful to find out the most suitable melting glue time through continuous testing and recording, and to use the appropriate melting glue time for melting glue in each welding process in the future, which can make The quality of the entire welding process is improved. In addition to the melting time, it is also very important to control the endothermic time. If the heat absorption time is too short, the melt cannot be melted evenly, which will also affect the stability of the entire welding process. However, if the heat absorption time is too long, the melt is likely to degrade due to long-term heat absorption. This changes the properties of the melt, which can drastically change the quality of the overall weld. Therefore, controlling the endothermic time is also a key point that relevant technical personnel need to pay attention to. Relevant technicians can record the welding effects produced by different heat absorption times through continuous attempts. Then explore the optimal parameter range for the future heat-absorbing process of the welding process.
Whether it is the melt pressure or the welding pressure, it will have a greater impact on the entire welding quality. If excessive melt pressure is used for welding, too much melt will be squeezed out at the same time, so that a large amount of melt cannot be attached to the welding surface in a short time. These melts will be squeezed out of the welding surface, and finally the remaining melt on the welding surface will become less due to excessive pressure. However, if the melt pressure does not reach a reasonable value, the amount of melt extruded at the same time cannot reach the standard, which will also seriously affect the welding quality, so it is very important to control the melt pressure. However, if a higher pressure is used during the welding process, the sol attached to the welding surface will be extruded too much, so that the stability of the welding surface cannot be guaranteed. However, if the pressure is too low, the thin oxide layer formed by the oxidation of the melt adhered to the welding surface cannot be effectively discharged, which will also affect the welding effect. Therefore, in terms of pressure control, relevant technical personnel must also draw up a reasonable range, only in this way can the stability of welding quality and welding effect be guaranteed. Of course, if you want to control the pressure and other factors, you need highly professional technicians to carry out and supervise the welding work. Therefore, for the welding construction of PE water supply pipes, the technical literacy of relevant staff also needs to be improved to a certain extent.
All in all, because the PE water supply pipe will be affected by many factors during the process of using hot melt welding. Therefore, when the relevant technical personnel use butt fusion welding to weld PE water supply pipes, they must pay attention to the factors that may affect the welding quality and effect, and take reasonable measures to minimize the possible impact of the influencing factors. . Only in this way can the service life and quality of the entire urban water supply system be guaranteed.
The above content is the relevant content of PE water supply pipe butt fusion welding construction technology, because most customers need the relevant parameters of pe water supply pipe. For your reference, the author puts the basic parameters at the end of the article. If there is a need for the new national standard pe 100 water pipe parameters, please leave us a message or contact us directly.