Aluminum alloy doors and windows have become the main building doors and windows products in our country due to their advantages of light weight, high strength, good service performance, strong decoration, economy and durability.
However, the quality of aluminum alloy doors and windows products in the current market is uneven. The inferior aluminum alloy doors and windows have poor sealing performance and are not easy to switch. They not only leak wind, rain and glass crack, but also encounter strong wind and external force, it is easy to scrape or bump the sliding part or glass, the doors and windows are aged, and the hinge is broken, which is the disadvantage of short service life.
Building is a hundred-year plan, which requires doors and windows to have a long enough service life. During the service life, except for a few vulnerable parts, the main structure and main accessories are not allowed to suffer from damage, deformation, corrosion, aging, obvious discoloration, fading and light loss on the surface. The main factors affecting the durability of doors and windows are:
1. Profile
after good surface treatment, aluminum profiles have good ability to resist atmospheric corrosion, not afraid of humidity, not afraid of sunlight, no deformation at high temperature, no embrittlement at low temperature, no burning, no aging, lightning protection, durable and stable, suitable for all kinds of climate environment.
The quality of profiles directly determines the quality of doors and windows. Doors and windows produced by inferior profiles have low strength and are easily discolored and deformed. Profile materials mainly include:
aluminum profiles used for high-quality aluminum alloy doors and windows, such as thickness, strength and oxide film, shall conform to relevant national standards and regulations. The wall thickness shall be above 1.2mm, and the tensile strength shall reach 157N per square millimeter, the yield strength should reach 108N per square millimeter, and the thickness of oxide film should reach 10 micrometers.
2. Structure of doors and windows
comprehensive: the outstanding advantages of insulated aluminum alloy doors and windows are high strength, good thermal insulation, good rigidity, good fire resistance, good atmospheric corrosion resistance, high comprehensive performance and long service life. Ordinary aluminum alloy doors and windows have relatively short service life due to their poor performance than insulation broken bridges.
3. Configuration of doors and windows
hardware is the main factor that determines the quality of the whole window. The quality of hardware accessories of doors and windows largely determines the service life of doors and windows. It can be said that door and window hardware is the core of the whole door and window, including handle, lock cylinder, hinge, etc. Each part works
main factors affecting the life of door and window hardware accessories:
1) humidity: because the moisture in the air condenses into liquid water mask, which is a necessary condition for the formation of corrosive primary batteries, when the humidity reaches a certain critical value, the surface forms water mask, and the corrosion rate increases.
2) temperature: when the temperature is high and the humidity is high, the temperature rises and the corrosion is accelerated. The longer the humidity is, the more serious the corrosion is.
3) atmospheric quality: Under normal circumstances, only oxygen in the air will corrode metals, but with the development of world industrialization, harmful gases and dust in the air will also increase greatly, such as coal, carbon dioxide, sulfur dioxide and other gases produced by gasoline combustion
4) anti-corrosion of hardware is very important. If hardware rusts, it will definitely affect the function and performance of doors and windows, and its service life will be greatly reduced, thus affecting the energy saving effect of doors and windows.
The key to the maintenance of door and window hardware lies in the following four points:
① other hardware of stainless steel handle and stainless steel can be scrubbed with brightening agent, which can increase the brightness.
② movable parts such as hinge, hanging wheel and caster may reduce their functions due to the adhesion of dust during long-term movement, and one to two drops of lubricating oil every half year can keep them smooth.
③ pay special attention to the direction of rotation and stretching of the handle, and do not use the dead force. In particular, children should be taught not to hang on the door handle, which is easy to cause danger and may cause harm to interior door.
④ when the rotation of the lock cylinder is not sensitive, a small amount of black powder can be scraped from the pencil leads and gently blown into the keyhole. This is because the graphite component is an excellent solid lubricant. Do not drip lubricating oil, because it will become easier to adhere to dust.
4. Processing level
production equipment and technological level determine whether the overall performance of doors and windows is excellent. High-quality aluminum alloy doors and windows, finely processed, smooth tangent, consistent angle, good sealing performance, easy to switch.
Inferior aluminum alloy doors and windows blindly choose aluminum profile series and specifications, rough processing, saw cutting instead of milling processing, not installed as required, poor sealing performance, not only air leakage, rain leakage and glass cracking phenomenon, moreover, in case of strong wind and external force, it is easy to scrape or bump the push and pull part or glass, damaging things and hurting people.
Therefore, it is recommended to choose high-quality high quality doors and windows when purchasing aluminum doors and windows. Of course, it also requires later maintenance and maintenance. Spend a little more money and worry more! Quality is very important!
