Modern building doors and windows can be roughly divided into plastic windows, composite windows, and aluminum alloy windows according to the types of profiles. Among them, aluminum alloy windows are the main building doors and windows in my country today, accounting for a considerable proportion in today's buildings. In fact, aluminum alloy windows have their advantages in terms of wind pressure resistance, water tightness, air tightness, and environmental protection. This is because compared with plastic windows of the same section, the moment of inertia of aluminum alloy windows is 3-4 times that of plastic windows; with the use of thermal insulation bridges in aluminum alloy profiles, the thermal insulation and thermal insulation properties of aluminum alloy windows are greatly improved. It is very suitable for the energy-saving requirements that are vigorously advocated today.
Aluminum alloy door and window hardware accessories are an important part of it, and its performance and quality have an important impact on the function of doors and windows. Due to the continuous development of modern technology, door and window hardware accessories (handles, handrails, hinges, slide rails, connectors, etc.) are also increasingly pouring into the market. These products come in a wide variety of shapes and colors, adding to the practicality and appearance of doors and windows. However, due to the different parts materials and surface decorative layer materials, their service life (mainly referring to corrosion resistance, durability and strength) is very different. Even if the color and luster are the same, even the aluminum alloy window accessories with similar hand feel can have a gap of up to several times or even dozens of times. In addition to considering that aluminum alloy door and window hardware must have sufficient mechanical strength, it is also necessary to pay attention to whether the selected materials can maintain good corrosion resistance when they are used in contact with aluminum alloys. Whether the hardware of aluminum alloy doors and windows can meet the design life requirements is very important for the safety and durability of aluminum alloy doors and windows during use.