How to distinguish the quality of aluminum alloy d

2022-07-22
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Aluminum alloy doors and windows are widely appreciated by users for their excellent characteristics. In general, due to the high production cost, the price of high-quality aluminum alloy doors and windows is about 30% higher than that of low-quality aluminum alloy doors and windows. Some aluminum alloy doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have tensile strength and yield strength much lower than the relevant national standards, which is very unsafe to use. When selecting and ordering aluminum alloy doors and windows, attention should be paid to the identification of the following:

aluminum alloy doors and windows have been widely appreciated by users for their excellent characteristics. In general, due to the high production cost, the price of high-quality aluminum alloy doors and windows is about 30% higher than that of low-quality aluminum alloy doors and windows. Some aluminum alloy doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have tensile strength and yield strength much lower than the relevant national standards, which is very unsafe to use. When selecting and ordering aluminum alloy doors and windows, you should pay attention to the identification of the following items:

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look at the materials. The thickness, strength and oxide film of aluminum profiles used for high-quality aluminum alloy doors and windows should meet the relevant national standards. The wall thickness should be more than 1.2mm, the tensile strength should reach 157 Newtons per square millimeter, the yield strength should reach 108 Newtons per square millimeter, and the oxide film thickness should reach 10 microns. If it fails to meet the above standards, it is inferior aluminum alloy doors and windows, which cannot be used

manufacturers with formal or production license shall indicate the product marks on the obvious parts of their aluminum alloy door and window products, including: manufacturer name or trademark, product name, product model or mark, manufacturing date or number. There should be obvious “ Moisture proof &rdquo& ldquo; Handle with care ” And “ Up ” Words and signs of

second, processing. High quality aluminum alloy doors and windows, with fine processing, exquisite installation, good sealing performance and easy switching. Inferior aluminum alloy doors and windows blindly choose aluminum profile series and specifications, and the processing is rough. Sawing is used instead of milling. They are not installed according to the requirements. The sealing performance is poor, and the switch is not free. Not only air and rain leakage and glass cracking occur, but also when encountering strong winds and external forces, it is easy to scrape or bump the push-pull part or glass, damaging objects and hurting people

aluminum alloy door and window components shall be firmly connected, and corrosion-resistant filling materials are required to seal and waterproof the connecting parts. The surface quality of doors and windows directly affects the decorative effect of the whole wall after installation. When checking the surface quality of doors and windows, attention should be paid to the following aspects:

1. The decorative surface of doors and windows should not have obvious damage, which means that the protective film on the surface of doors and windows should not have scratch marks

2. The colored surface of adjacent components on doors and windows should not have obvious color difference

3. There should be no aluminum chips, burrs, oil spots or other stains on the surface of doors and windows, and there should be no overflowing adhesive at the assembly connection

third, look at the price. In general, due to the high production cost, the price of high-quality aluminum alloy doors and windows is about 30% higher than that of low-quality aluminum alloy doors and windows. Some aluminum alloy doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have tensile strength and yield strength much lower than the relevant national standards, which is very unsafe to use. In addition, at present, there are many self-employed people who process aluminum alloy doors and windows, and they do not understand the structural characteristics and performance of aluminum alloy doors and windows. In order to reduce costs, Jerry built products, shoddy products, the hidden dangers of larger products, generally should not be used. It is best to choose the products of regular aluminum alloy door and window manufacturers

link: how to distinguish the quality of plastic steel doors and windows

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