How to identify the quality of aluminum alloy doors and windows?

by:Zeyi     2021-12-06
Aluminum alloy doors and windows are favored by consumers for their unique advantages such as light weight, high strength, corrosion resistance, and extruded into a variety of new complex cross-section materials, and gradually replace plastic steel, wood and other materials doors and windows. In fact, to distinguish the quality of aluminum alloy doors and windows, just look at the two hands and three listening points. The specific identification of aluminum alloy doors and windows is as follows: 70 and 90 series aluminum profiles are commonly used in section thickness, and the national standard wall thickness is more than 1.2mm, high-quality The wall thickness of aluminum profile is 1.2mm~2.0mm. How to treat the degree of oxidation of special-shaped materials? In fact, it is very simple, that is, lightly scratch the surface of the profile when selecting and purchasing, and then see if the surface of the oxide film can be wiped off after scratching. Warm reminder, this test should not be performed on the sample window, it can be performed on the materials displayed by the merchant. Contour color light Generally, the cross-section color of high-quality aluminum profile is silvery white and the texture is uniform. If the color difference on the same profile is obviously inconsistent, or the color is dark, it is not recommended to choose and buy. Recycled aluminum or scrap aluminum can be used. to make. Contour surface smoothness. The surface of high-quality aluminum profiles is smooth and bright, without depressions or protrusions. The surface of aluminum alloy doors and windows processed by large manufacturers is relatively smooth and bright. The aluminum alloy doors and windows processed by small workshops will more or less have slight unevenness due to mechanical or raw material problems. The shape of this aluminum alloy profile is easy to oxidize and deform in the later stage. When purchasing the profile strength, you can bend the profile moderately by hand. If you don't work hard to bend the profile, you can conclude that the strength of the aluminum profile does not meet the standard. In addition, the strength of the profile is not as hard as possible. Aluminum has a certain degree of toughness and non-rigid material, which can be used for forging into different shapes. Therefore, the owner needs to identify the brand and observe carefully when buying. Contour glossy aluminum alloy doors and windows avoid obvious defects such as cavitation, slag, and cracks, burrs, and spalling of the profile. If the above phenomenon exists, it can be concluded that the secondary processing of recycled aluminum or scrap aluminum is caused by uneven texture and uneven alloy ratio, and it is easy to crack and oxidize in the later stage. Sound insulation and sealing, depending on the structural principle of the profile. When purchasing aluminum alloy doors and windows, it is necessary to pay attention to sound insulation and sealing as well as the construction principle to avoid using consumers’ ignorance of the product’s psychology and ignorance of the product. The cost of aluminum. Two kinds of top combined sealing methods are used to operate the sealing process, increase the number of sealing layers, reduce the number of sealing layers and air convection, and use automobile sealing tape to make the sealing performance better.
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