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In the late 1980s, doors and windows were made of aluminum alloy profiles, which solved some of the shortcomings of steel windows. However, the profile itself is made of metal materials, and the heat and cold conduction is fast. The K value of the whole window of steel windows and aluminum alloy windows is above 6.0w/(m2.K), which does not fundamentally solve the problems of sealing and insulation. Although it can be equipped with hollow glass, the K value of the whole window can only reach about 4.5w/(m2.K).

The deformation of aluminum alloy window frame can be repaired by the following methods:
Initial repair: Use plastic hammer, wooden hammer, aluminum hammer or flat hammer to make initial repairs to the bent area. If this there is difficulties to do so, just heat the area and hammer it again. When repairing the corners, the aluminum alloy plate should be knocked from the back to avoid scratches and knocks on the panel.

In the processing and treatment of aluminum products, surface treatment plays a vital role. As industrial design becomes increasingly sophisticated and consumers have higher requirements for product quality, the surface texture of aluminum products has become one of the important factors in evaluating their quality. Sandblasting, as an important surface treatment, has been revolutionized and applied in the aluminum products industry in recent years, bringing a more unique and advanced surface texture to aluminum products and opening up a new path to improve product quality.

1. Background introduction
Aluminum profiles are a lightweight, corrosion-resistant and easy-to-process material with wide applications in construction, transportation, electronics and other fields. With the acceleration of global industrialization and the improvement of environmental awareness, the aluminum profile manufacturing industry is facing new development opportunities and challenges.

Aluminum, as a lightweight, corrosion-resistant metal material, plays a pivotal role in modern industry. However, the original aluminum surface often lacks sufficient protection and is easily corroded and damaged by environmental factors, thus affecting its performance and lifespan. Therefore, surface treatment of aluminum materials has become a necessary technical means, which can not only improve the aesthetics of aluminum materials, but also significantly enhance its performance.

1. Push and pull lightly
When using aluminum alloy doors and windows, move gently and push and pull lightly. If you find any difficulties, do not push or pull it rudely, but you should eliminate the fault first.
2. Remove dust accumulation
Dust accumulation and deformation are the main reasons why aluminum alloy doors and windows are difficult to replace. Keep the door frame clean, especially the sliding groove. Use a vacuum cleaner to remove dust in the groove and door seal strips. When cleaning aluminum alloy doors and windows, do not step on the aluminum frame or hold the frame for support.