What are the door and window curtain wall seals? Sealing strip fixed advantage
The doors and windows used in high-rise buildings not only require good decorative effects, but also excellent sound insulation, heat insulation, sealing and dustproof performance. Accessory curtain wall strips for doors and windows ensure that all of the above excellent performance is achieved. If the door and window curtain wall seals are not properly selected, it will cause quality problems. Then everyone will follow the Xiaobian together to see the relevant content of the door and window curtain wall seals .
First, the sealing strip's fixing method advantages
1) Embedding advantages: easy to install and replace, you can first assemble the window on the wall and then assemble the strip; Disadvantages: easy to fall off when subjected to large external force.
2) Advantages of wearing people: good fit with profiles, not easy to fall off; disadvantages: not easy to replace, must be worn before the profile group window.
3) Adhesive strip is glued to the contact part of the strip and the profile. When the adhesive protective film is peeled off during construction, the strip can be directly adhered to the profile (used for interior doors and windows, anti-collision parts of furniture) .
Second, the performance of high temperature vulcanization SiR High temperature vulcanization SiR has many unique advantages:
1) The surface is smooth and the colors are various.
2) Excellent cold resistance and heat resistance. SiR can be used for a long time in a temperature range of 70,200 ° C, especially suitable for use in countries with large latitudes.
On the windows and walls of the summer sun in the south of China, the temperature can easily reach 70 °C, while the winter temperature of -40 °C in the Mohe area is also very common. The huge temperature difference makes PVC, thermoplastic elastomer (TPE/TPR), EPDM sealing strip The use is severely constrained: general plastics, rubber or elastomers are already embrittled at 20 ° C and cannot be applied even at 0 ° C. The SiR has almost no change in physical properties in the temperature range of 50200 °C.
3) Excellent weathering resistance. The natural aging resistance and ozone aging resistance of SiR is superior to other known rubbers and elastomers. Because the surface energy of SiR is low, it does not adhere to organic matter, and under the action of sun, rain, water and ozone, it is aged for 30 years, and its performance is not significantly reduced.
4) Good compressive deformation ability (Table 1), the deformation of high temperature SiR is only 10% after 70 h at 150 °C. The hardness of SiR can be adjusted between Shore 3055 A to achieve the best sealing performance.
5) Good human safety.
6) Good air permeability and selective air permeability. The oxygen transmission rate of SiR is 25 times that of natural rubber and 428.6 times that of butyl rubber (IIR), which is beneficial to maintain the freshness of the living room air.
How about, I read the relevant introduction to the door and window curtain wall seals, and I also learned a lot about the door and window curtain wall seals. I hope that you can learn more about home improvement knowledge through this article, and you will be able to create a more perfect home environment. Thank you for reading this article and your support and love for Xiaobian. If you want to get more information about home improvement, please continue to pay attention to the decoration home network.
Grinding is an abrasive machining process that uses a grinding wheel as the cutting tool.
A wide variety of machines are used for grinding:
Hand-cranked knife-sharpening stones (grindstones)
Handheld power tools such as angle grinders and die grinders
Various kinds of expensive industrial machine tools called grinding machines
Bench grinders
Grinding practice is a large and diverse area of manufacturing and toolmaking. It can produce very fine finishes and very accurate dimensions; yet in mass production contexts it can also rough out large volumes of metal quite rapidly. It is usually better suited to the machining of very hard materials than is "regular" machining (that is, cutting larger chips with cutting tools such as tool bits or milling cutters), and until recent decades it was the only practical way to machine such materials as hardened steels. Compared to "regular" machining, it is usually better suited to taking very shallow cuts, such as reducing a shaft's diameter by half a thousandth of an inch or 12.7 μm.
Grinding is a subset of cutting, as grinding is a true metal-cutting process. Each grain of abrasive functions as a microscopic single-point cutting edge (although of high negative rake angle), and shears a tiny chip that is analogous to what would conventionally be called a "cut" chip (turning, milling, drilling, tapping, etc.)[citation needed]. However, among people who work in the machining fields, the term cutting is often understood to refer to the macroscopic cutting operations, and grinding is often mentally categorized as a "separate" process. This is why the terms are usually used separately in shop-floor practice.
Lapping and sanding are subsets of grinding.
Types of grinding are:
Cylindrical grinding
Surface Grinding
Form grinding
Pre-grinding
Precision Grinding,Machine Parts Honing,Centerless Grinding Small Shaft,External Cylindrical Grinding Core
Dayue Precision Technology (Dongguan) Co., Ltd. , https://www.dayuechn.com