In-Depth Analysis of the 'Aluminum' in Aluminum Alloy Doors and Windows — Part 2

In the process of purchasing aluminum alloy doors and windows , the quality of aluminum is related to the service life and performance of Doors And Windows, so the choice of aluminum  is particularly important. For ordinary consumers, master the following several practical s kills, you can effectively identify the advantages and disadvantages of aluminum ,and make the right choice for their needs.

①．visual observation method

Cutting surface identification: the cut surface of high-quality aluminum presents a uniform silver-white metallic luster, as smooth and flat as a mirror. Observed with a magnifying glass, there should be no grayish areas, impurity spots or pores. If the cut surface appears blackened, yellowed or obvious granularity, it may be mixed with too much low-quality recycled aluminum.

Surface Inspection: High-quality aluminum after fine surface treatment, the coating is uniform and dense, without orange peel, hanging or color difference phenomenon. Available finger gently touch the surface of the profile, feel whether the smoothness of the bump. The corners of high-quality aluminum are handled rounded, without burr or seam marks.

②． the brand and certification verification

Recognition of well-known brands: domestic first-line aluminum brands such as Chalco (Chalco), Asia Aluminum (AsiaAlum), Fenglu aluminum (Fenglu), etc., its raw materials control is strict, mature production processes. These brands are usually embossed in the profile conspicuous brand logo, consumers can pay attention to check.

Certification document review: regular manufacturers must be attached to the product quality assurance certificate, indicating the composition of aluminum, mechanical properties and other key parameters. Focus on: ISO9001 quality management system certification, SGS test reports, environmental certification (such as green building materials certification). Require merchants to provide copies of recent (within one year) test reports.

③．Modern Hybrid Aluminum Buying Advice

Modern aluminum alloy doors and windows often use virgin aluminum and high-quality recycled aluminum mixed use strategy, not only to ensure the performance requirements, but also take into account the environmental benefits. The price of doors and windows using 100% recycled aluminum may be 30-40% lower than virgin aluminum products, but the service life is often shortened by more than 50%. Consumers are advised to choose according to the usage scenario:

Coastal high humidity areas: preferred high raw aluminum proportion (≥80%) products

Ordinary residential: choose balanced products with 60-70% primary raw aluminum

Temporary buildings: consider high-quality recycled aluminum products

The quality of “aluminum” in aluminum alloy doors and windows  directly affects the service life and performance of the product. Primary aluminum with its excellent physical and chemical properties to become the first choice for high-end  doors and windows ,while high-quality recycled aluminum with environmental characteristics and cost advantages to occupy a certain market share. Consumers in the purchase should not be based on price alone to make a decision, but should take into account the performance requirements, the use of the environment and the quality of the product, choose the most suitable for their aluminum alloy doors and windows products. At the same time, with the progress of melting technology, the quality of recycled aluminum is constantly improving, and is expected to replace virgin aluminum in more application scenarios in the future, to promote the development of the industry in a more environmentally friendly direction.