Aluminum alloy doors and windows are profiles that will undergo surface treatment. The door and window frame material components made by cutting, drilling, milling, tapping, window making, etc., are then assembled together with connectors, seals, and opening and closing hardware. Aluminum alloy doors and windows can be divided into sliding doors and windows, casement doors and windows, revolving doors and windows, screen doors and windows, shutters, fixed windows, hanging windows, etc. according to their structure and opening and closing methods. According to the different appearance and color, aluminum alloy doors and windows can be divided into silver white, golden yellow, bronze, bronze, black and yellow. According to the different production series (accustomed according to the width of the door and window profiles), aluminum alloy doors and windows can be divided into 38 series, 42 series, 50 series, 55 series, 60 series, 65 series, 78 series, 80 series, 110 series, 120 series, 188 series, etc. (1) The performance of aluminum alloy doors and windows Aluminum alloy doors and windows must undergo strict performance tests before leaving the factory, and can only be installed and used after reaching the specified performance indicators. Aluminum alloy doors and windows usually evaluate the following main properties: 1. strengthThe strength of aluminum alloy doors and windows is expressed by the level of air pressure applied during the compressed air pressurization test in the pressure box, and the unit is N/m2. The strength of aluminum alloy doors and windows with general performance can reach 1961-2353N/m2, and the high-performance aluminum alloy windows can reach 2353-2764N/m2. Under the above pressure, the maximum displacement of the center of the casement should be less than 1/70 of the height of the inner edge of the window frame.2. water tightnessThe aluminum alloy window is placed in the pressure test chamber, and a sine wave pulse pressure with a period of 2s is added to the outside of the window. At the same time, artificial rainfall of 4L per m2 per minute was injected into the window, and a continuous 10min 'wind and rain' test was carried out. There should be no visible water leakage on the indoor side. The water tightness is expressed by the average pressure of the pulsed wind pressure applied during the test. The general performance aluminum alloy window is 343N/m2, and the high-performance window for typhoon resistance can reach 490N/m2.3. Opening and closing forceWhen the glass is installed, the external force required to open or close the casement should be below 49N.4. sound insulationThe acoustic transmission loss of aluminum alloy windows is tested in the acoustic laboratory. It can be found that when the sound frequency reaches a certain value, the sound transmission loss of the aluminum alloy window tends to be constant. Using this method to measure the grade curve of sound insulation performance, the sound transmission loss of aluminum alloy windows with sound insulation requirements can reach 25dB, that is, the sound level can be reduced by 25dB after the sound passes through the aluminum alloy window. Aluminum alloy windows with high sound insulation performance, the sound transmission loss grade curve is 30 ~ 45dB.5. Nylon Guide Wheel DurabilityThe electric motor for sliding windows and movable casements is tested for continuous reciprocation through the eccentric linkage mechanism. The nylon wheel with a diameter of 12-16mm is tested 10,000 times; the nylon wheel with a diameter of 20-24mm is tested for 50,000 times; the nylon wheel with a diameter of 30-60mm is tested for 100,000 times. And the guide wheel and other accessories are not abnormally damaged.6. Opening and closing durability The opening and closing lock is driven by a motor on the test bench, and the continuous opening and closing test is carried out at a speed of 10 to 30 times per minute. When it reaches 30,000 times, there should be no abnormal damage. The use and maintenance of aluminum alloy doors and windows (1) During the use of aluminum alloy doors and windows, open and close gently, do not use too much force, and do not pull hard, so as not to damage the glass or door and window frame fan and bring unnecessary trouble to the use. (2) During the use of aluminum alloy doors and windows, soft gauze or cotton silk should be used to clean them frequently to keep the surface of aluminum alloy doors and windows clean and free from pollution. (3) During the use of sliding doors and windows, you should always check whether the spare parts are damaged. If there is damage, you should repair or replace them in time to avoid affecting the performance of the doors and windows. (4) It is strictly forbidden for acidic and alkaline chemicals to contact the surface of aluminum alloy doors and windows to avoid corrosion. (5) The rubber molding of aluminum alloy doors and windows to fix the glass is easy to shorten and become loose due to aging and shrinkage. It should be inlaid or replaced in time, otherwise the glass will be easy to loosen, resulting in gaps and easy leakage of wind and rain. (6) Aluminum alloy door and window glass can choose blue glass, because blue is most suitable for human eyes in terms of wavelength, so it is good for human vision. Brown glass is more suitable for bedrooms, and the brown color is softer, giving people a warm feeling. (7) When repainting the room, wrap the aluminum alloy doors and windows with cloth. When cleaning the glass (for sliding windows), it is best to remove the window sash and wipe it, which is easy to wipe clean and safer.