Some technical descriptions of broken bridge windows (for your reference)
Windows bring light and vitality to the room, and in the cold winter, windows have also become the thermal insulation barrier of the room, and their sealing performance has become an important indicator for people to choose windows. In the past, people may pay more attention to its opening performance when choosing a window. In fact, to understand its thermal insulation performance, window materials, glass, hardware and so on are all essential elements.
The aluminum alloy window with thermal insulation broken bridge is improved on the basis of the old aluminum alloy window to improve the thermal insulation performance of doors and windows. Aluminum alloy profile is divided into two parts by reinforced nylon gasket, which blocks the heat conduction of aluminum. The material and quality of reinforced nylon gasket directly affect the durability of aluminum alloy window with thermal insulation and broken bridge.
The outstanding advantages of heat insulation broken bridge aluminum alloy doors and windows are high strength, good heat insulation, good rigidity, good fire resistance, large lighting area, good atmospheric corrosion resistance, high comprehensive performance, long service life and good decorative effect. The use of high-grade broken bridge aluminum alloy doors and windows is the first choice for high-grade building windows.
It depends on the material: the thickness, strength and oxide film of high-quality aluminum profiles for aluminum alloy doors and windows should meet the relevant national standards, the wall thickness should be above 1.2 mm, the tensile strength should reach 157 Newton per square millimeter, the yield strength should reach 108 Newton per square millimeter, and the oxide film thickness should reach 10 micron. If you can't meet the above standards, it is inferior aluminum alloy doors and windows and can't be used.
Look at the processing: high-quality aluminum alloy doors and windows, fine processing, exquisite installation, good sealing performance and convenient opening and closing. Inferior aluminum alloy doors and windows blindly adopt aluminum profile series and specifications, and the processing is shoddy. Saw instead of milling, not installed as required. Poor sealing performance, uncomfortable switch, not only air leakage and rain leakage, but also glass cracking. When encountering strong wind and external force, it is easy to scratch or touch the push-pull part or glass, damaging things and hurting people.
Look at the price: under normal circumstances, high-quality aluminum alloy doors and windows save about 30% energy than inferior aluminum alloy doors and windows because of their high production cost. Some aluminum alloy doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm are far below the relevant national standards in tensile strength and yield strength, so they are unsafe to use.
In addition, it is best to choose the products of regular aluminum alloy doors and windows manufacturers, and the products that are not processed according to the standards are not easy to meet the standards.
Broken bridge material
In terms of thermal insulation and sealing performance, the new energy-saving broken bridge aluminum alloy window leads the fashion. This profile adopts double thread technology, and uses reinforced nylon to isolate the inside and outside of aluminum window frame to avoid energy exchange between inside and outside. Among them, the thickness of aluminum alloy is very important. General windows are at least 1.2 mm, and the wall thickness of high-grade energy-saving aluminum alloy windows can reach 1.8 ~ 2.0 mm, which is warmer in winter.
When it comes to the price of aluminum alloy windows, there are seven or eight high-end brands on the market, such as Meichi, Senying, Jinan VEKA, Schwier and Gemstone. , the price is more than 654.38+10,000 yuan, the price of mid-range brands is around 800 yuan to 900 yuan, and the low-end products are 500 to 600 yuan. According to experts, when consumers buy this kind of broken bridge aluminum alloy window, the price is at least higher than that in 600 yuan, and the quality is relatively reliable, because inferior products with lower price may use plastic instead of aluminum alloy in the middle of broken bridge. First, it is not strong, and second, it expands with heat and contracts with cold, which reduces the thermal insulation coefficient.
Double-layer insulating glass
When it comes to windows, you can't help mentioning glass. In the past, windows were all single-layer glass or ordinary double-layer glass. In recent years, insulating glass has appeared in China. In fact, insulating glass was invented by Americans in 1865 and was used in the army at that time. This product has been recognized by all countries in the world for its excellent heat insulation, sound insulation, sealing, anti-freezing and dustproof properties. At present, there are regulations in Beijing that all windows near the road should be made of insulating glass.
Insulating glass seals the edges of two or more pieces of glass together to form electrostatic drying gas between the glasses, which has certain vacuum performance. Its main materials are aluminum alloy gasket, angle bolt, butyl rubber, polysulfide adhesive and desiccant.
According to experts from Meichi doors and windows, the sealing and heat insulation performance of insulating glass is very good, mainly because of its special material. It is very simple to distinguish whether insulating glass is qualified in winter, just look at whether it is frozen inside and outside, and if it is frozen, it will be unqualified. Because the insulating property of insulating glass is that the polysulfide glue it uses can prevent water vapor from penetrating; Butyl rubber can be adhered to two pieces of glass to make it tightly sealed; There is a desiccant in the aluminum alloy partition to absorb water.
Generally speaking, the effective life of insulating glass is 8 ~ 10 years. During its use, there may be water vapor infiltration and water droplets, but it is a long process. According to national regulations, insulating glass can be regarded as a qualified product if water vapor appears after five years of use.
At present, insulating glass of some high-grade doors and windows brands on the market can be safely used, such as Meichi, Garbo, Schweier and other brands. And some small factory insulating glass will produce inferior products. The so-called insulating glass is simply to fix two pieces of glass together, and consumers should carefully distinguish them so as not to affect the heat preservation in winter.
Hardware appliance
Although hardware is only a small part of the window, its role must not be underestimated. The sealing quality of hardware is very important, which also affects the price of windows.
The hardware of high-grade windows is made of metal, and its internal strength, appearance and performance directly affect the performance of windows. Many middle and low-grade plastic steel windows are plastic hardware, and there are great hidden dangers in quality and life. Hardware mainly identifies its flexibility, tightness, wear resistance and corrosion resistance, while accessories mainly consider the lining steel placed in the profile cavity. For plastic-steel doors and windows, a good lining steel should be galvanized A3 steel with a wall thickness of at least1.2mm. ..
The quality of hardware accessories greatly affects the price of windows. For example, the quality difference between imported hardware and domestic hardware is very large. Imported hardware is generally used 20,000 times without failure. At present, the hardware of high-grade doors and windows such as Meichi is imported from Germany. Better manufacturers use imported products in key parts and domestic products in general parts. The windows produced by some small manufacturers are made in China, so the price is at least half cheaper.
How to check the installation quality of doors and windows
1. Window surface: the window frame should be clean, flat and smooth, with no scratches and bumps on the large surface, and the profile should not be damaged by welding.
2. Hardware: The hardware should be complete, correctly positioned, firmly installed and flexible to realize their respective functions.
3. Glass sealing strip: The contact between sealing strip and glass and glass notch should be smooth, and curling or groove removal is not allowed.
4. Sealing quality: When the doors and windows are half open, there is no obvious gap between the fan and the frame, and the sealing strip on the sealing surface should be in a compressed state.
5. Glass: The glass should be flat and firmly installed, without looseness. Single-layer glass should not directly contact the profile. The inner and outer surfaces of double-layer glass should be clean, there should be no dust and water vapor in the glass interlayer, and the gasket should not be inclined.
6. Pressing: The batten with sealing strip must be completely attached to the glass, there should be no obvious gap between the batten and the profile, and the joint gap should be less than or equal to1mm.
7. Assembly materials: The assembly materials shall be closely connected with the window frame and sealed with caulking paste, and shall not shake. Screw spacing should be less than or equal to 600 mm, and both ends of reinforced steel lining should be firmly fixed with holes.
8. Switch components: the horizontal, sliding or rotating windows should be closed tightly.
9. Connection between the frame and the wall: The window frame should be horizontal, flat and vertical, with the same height, the distance between the fixing pieces should be less than or equal to 600 mm, the frame and the wall should be firmly connected, the gaps should be filled with elastic materials, and the surface should be sealed with joint paste without cracks.
10. Drainage hole: the position of the drainage hole should be correct and unobstructed at the same time.
How to identify the quality of windows
At present, the quality of windows produced in the market is mixed. How to identify its advantages and disadvantages? It can be mainly observed from three aspects: profile, hardware fittings and processing technology.
1. profile, profile surface smoothness, cavity structure rationality, profile wall thickness and profile matching rationality are all standards to measure profile quality. At present, there are some brand-name products produced by fixed-point manufacturers in Shanghai for window profiles, which are basically formulated with foreign patents and have stable and reliable quality.
2. In terms of hardware fittings, its advantages and disadvantages mainly depend on its flexibility, sealing, wear resistance and corrosion resistance. Accessories mainly consider the lining steel placed in the profile cavity. A good lining steel should be galvanized A3 steel, and the wall thickness should be at least1.2mm. At present, some production stalls often cheat the lining steel to reduce the price, attract business and make consumers cheated.
3. From the perspective of processing technology, its quality mainly depends on the appearance quality of doors and windows, the accuracy of processing size, the strength of edges and corners and the matching rationality of hardware accessories.