Insulating glass knowledge
Insulating glass was invented by Americans in 1865. This kind of product is superior to ordinary double-layer glass due to its heat insulation, sound insulation, bees, frost resistance and dustproof, so it has been recognized by all countries in the world.
Insulating glass is to seal two or more glass edges together, forming a static dry gas between the glass, and has a certain vacuum performance. The main material is aluminum spacer, angle plug, butyl rubber, poly Sulfur glue, desiccant.
Features of empty glass:
A. Insulation performance: the conduction heat coefficient k is less than 3.0kw/mm.k.
B. Sound insulation performance: but the external noise is reduced by 27-53 decibels.
C. Frost resistance: the dew point on the glass can reach -40 degrees Celsius.
D. Sealing performance: It is not easy to enter dust.
E. Stability: not easy to break, wind pressure, long service life.
How to check the quality of plastic windows
1. Look at the window surface: the window frame should be clean, voucher, smooth, no scratches, bruises, no cracks in the profile.
2. Look at the hardware: the hardware must be complete, the position should be correct, the installation is firm, and the use is flexible.
3. Look at the glass sealing strip: the contact between the sealing strip and the glass should be flat, without curling and grooving.
4. Look at the quality of the seal: when the door and window are closed, there is no obvious gap between the fan and the frame, and the seal should be in a compressed state.
5. Look at the glass: the glass should be flat, the installation is firm, there should be no looseness, the inner and outer surfaces of the double-layer glass should not have dust and water vapor, and the spacers should not be lifted.
6. Look at the bead: the bead must be completely in close contact with the glass, and the gap between the joints of the profile should be less than or equal to 1 mm.
7. Look at the puzzle: the paste material should be tightly connected with the window frame and sealed with the caulking paste, and should not be loose.
8. Look at the switch components: half open, pull up or rotate the window should be closed tightly.
9. Look at the frame and the wall: the window frame should be horizontal and vertical, the height is consistent, and the frame and the wall should be firmly connected.
10. Look at the drain hole: the drain hole should be in the correct position and at the same time be unblocked.
Why do plastic steel doors and windows require elastic installation?
Plastic steel doors and windows have the characteristics of thermal expansion and contraction, so the seal between the plastic steel doors and windows and the wall interface is a moving state seal. Generally, the expansion and contraction value of plastic steel doors and windows can reach more than 10mm. In order to ensure that the plastic steel doors and windows can be freely expanded and contracted after installation, the inner cavity of the gap between the door and window and the wall should be filled with elastic material. If it is sealed with dry hard cement mortar, it can not meet this requirement. Because of the high thermal conductivity of the mortar, it will shrink and crack over time, which will affect the airtightness, watertightness and sound insulation of doors and windows.
In addition, the elastic materials are shock-resistant, crack-proof, waterproof, fire-proof, heat-insulating, and strong in adhesion, which are unmatched by dry hard cement mortar. The elastic materials currently used are cold felt strips, foamed plastics, silicone foam sealants, polyurethane foaming agents, and foaming agents are widely used.
How to identify the advantages and disadvantages of Wanggang doors and windows?
At present, there are many manufacturers of plastic steel doors and windows on the market, but the quality of the products is not good. How to identify the advantages and disadvantages of plastic steel doors and windows? Mainly from three aspects, namely profiles, hardware accessories, processing technology. From the aspect of profile, the surface finish of the profile, the rationality of the cavity structure, the wall thickness of the profile and the rationality of the profile formulation are all criteria for measuring the pros and cons of the profile. At present, the main profiles used in aluminum-plastic door and window systems are Germany Kemeiling, Wuhu Conch, Dalian Shide, Tianjin LG, etc. These profiles are basically made of foreign patent formula, and the quality is stable and reliable. In addition, from the aspect of hardware accessories, the advantages and disadvantages of hardware accessories have greatly affected the price of plastic steel doors and windows. The hardware mainly identifies its flexibility, airtightness, wear resistance and corrosion resistance, while the accessories mainly consider the lining steel placed in the profile cavity. For plastic steel doors and windows, the good lining steel should be galvanized A3 steel. The wall thickness is at least 1.2mm. From the processing technology, the advantages and disadvantages of the processing technology determine the quality of the apparent quality of the door and window, the accuracy of the processing dimensions, the welding strength, and the matching rationality of the use of hardware accessories all affect the quality and performance of the doors and windows. In summary, only the use of stable performance profiles, reasonable and functional hardware accessories and sophisticated processing technology, can produce beautiful and elegant, high-performance plastic steel doors and windows.
There are several ways to open plastic steel doors and windows. What is the difference?
The opening methods of plastic steel doors and windows mainly include push-pull, outer opening, inner opening and inner opening, and the new opening method has push-pull upper hanging type.
Generally speaking, the sliding window has the advantages of simple and beautiful façade, flexible and safe use, long service life, large lighting rate, less space occupation, and convenient screen screen. The outer open window has the advantages of large opening surface, good sealing performance, ventilation and air permeability, excellent thermal insulation and impermeability. At present, the plastic steel doors and windows are mainly push-pull type, followed by the life of the external open plastic steel doors and windows?
Anti-aging and long service life are a feature of plastic steel doors and windows. According to the test results of weather resistance, heat preservation and sound insulation of plastic door and window frames, the aging process of rigid PVC is a very slow process, and the service life of plastic steel doors and windows can reach 30 years.
What is the difference between the sealing, heat preservation, sound insulation and decoration of plastic steel doors and windows and ordinary doors and windows?
Plastic steel doors and windows adopt special formulated materials, the material itself has a water absorption rate of less than 0.1%, and the frame fans are sealed with double seals. The gaps are equipped with excellent sealing strips, and the drainage holes are opened at appropriate positions of the frame materials. The corners are also formed by mechanical welding, so the sealing performance of plastic steel doors and windows is excellent, water-proof and moisture-proof, sound-proof. In terms of heat preservation, the frame material and glass of doors and windows are important factors affecting thermal conductivity, the material of plastic steel doors and windows, Its heat transfer coefficient is only l/1250 times that of aluminum. For doors and windows, the ratio of the heat transfer performance of PVC single glass doors and windows to aluminum single glass doors and windows is 1:2, so the heat insulation performance of plastic steel doors and windows of the same area is better than that of metal doors and windows, which can save energy consumption by more than 30%. In terms of sound insulation performance, the sound insulation effect of plastic steel doors and windows 6 meters away from the road and the sound insulation effect of aluminum alloy doors and windows 18 meters away from the road. Plastic steel doors and windows not only have the above excellent performance, but also have beautiful and elegant appearance, various colors, various forms, clean and easy to clean, so the decorative effect is also superior. In fact, steel doors and windows have been widely used in developed countries such as Europe.
Testing steel window lining is the focus
Plastic steel windows have been widely used in home decoration. How to judge the quality of plastic steel windows has become a topic of concern to consumers. First of all, the specification of the plastic-steel window is distinguished by the width of the slotted part of the window frame. In the STC77 type, the "T" refers to the push-pull, the "C" refers to the window, and the 77 refers to the width of the slot-shaped portion is 7. 7 cm; then the "P" in the SPC50 type in the plastic steel window is flat, and the "C" indicates the window, that is, the SPC50 type, that is, the width of the casement window is 5 cm. The steel lining of the plastic steel window in the plastic profile must be treated with anti-corrosion and anti-rust treatment, and the thickness should not be less than 1.2 mm. The inlay of the grooved steel lining in the plastic profile of the window frame is not only the reinforcement effect on the plastic steel. It mainly plays a certain role for the installation. The steel profiles of the four frames of the sash are embedded in the steel lining, which can increase the strength and reinforcement of the window against wind pressure.
Consumers have the following practices when identifying slotted steel in a steel window. First, it is possible to feel whether the steel lining is added to the plastic steel window from the weight. If the weight of the plastic steel window is relatively heavy, it is generally added with a steel lining, and vice versa. Secondly, you can carefully observe whether the shape of the window frame and the sash is exposed by the nails of the automatic nails or the rivets. Because the steel lining of the plastic steel is fixed with the plastic profiles, it must be fixed by automatic nails or rivets. Look at the outer wall of the window frame or sash, there is no nail cap, it is also a way to check the steel steel without adding steel lining.
In addition to this, it is also possible to use a magnet to check whether there is a steel lining in the plastic. When selecting steel products, in addition to the inspection of steel lining, it is crucial to choose a good brand and understand its product performance, quality and after-sales service. The high-performance plastic steel window should have high sealing effect, sound insulation and heat insulation function, various scientific opening methods, rainproof anti-theft and sturdy and durable characteristics, which is the first choice for high-grade decoration.
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