ã€China Aluminum Industry Network】Although aluminum alloy doors and windows hardware has a strong anti-corrosion, but due to the influence of air, climate and other factors, it still poses no small threat to aluminum doors and windows hardware. The air and environmental causes are mainly reflected in the air humidity, the ambient temperature, and the air pollution conditions.
1, air humidity
It is easy to understand that aluminum doors and windows hardware are exposed to moist air for a long period of time. The moisture in the air will condense and form liquid water droplets. As a result, corrosion cells are formed on the surface of the aluminum door and window hardware to accelerate the electrolytic corrosion of door and window hardware. . Therefore, the air humidity is the main cause, when the humidity reaches a certain critical value will have a water film type, so that aluminum alloy door and window hardware corrosion is inevitable.
Therefore, it is particularly important that we keep the doors and windows dry and the ventilation and drying of the indoor environment. In hot and humid weather, keep it well ventilated, but also be diligent in wiping to ensure that the doors and windows are dry.
2, temperature
In hot and humid summer, with the increase of temperature, the corrosion of aluminum doors and windows hardware will be accelerated. At the same time, the temperature difference between day and night will increase, which will cause a large amount of water vapor condensation at night and further accelerate the corrosion process. The wet time is longer and the corrosion of the aluminum doors and windows hardware is also more severe. Generally speaking, when the temperature difference between day and night is greater than 6°C, and the temperature changes within the range of 5°C to 50°C, fogging may occur as long as the relative humidity reaches 65% to 75%.
3, air pollution
In recent years, environmental pollution has become increasingly serious. The air is filled with PM2.5, sulfides, and corrosive media. Acid-alkaline substances will be adsorbed on the aluminum door and window hardware, causing acid and alkali corrosion to the hardware. At the same time because of air pollution, causing frequent acid rain, is also a threat to the aluminum doors and windows hardware. In addition to acid-base corrosion, carbon particles and metal powders in the air, which are adsorbed on the surface of aluminum doors and windows, may also become a surge with aluminum door and window hardware, causing electrolytic corrosion.
Therefore, the daily anti-corrosion work of aluminum doors and windows hardware, in addition to ensuring the clean and dry doors and windows, we also need to start from their own care for the environment.
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