Definition of high reflectivity mirror aluminum sheet
High reflectivity mirror aluminum sheet is a kind of aluminum sheet with specially treated surface, which is characterized by extremely high reflectivity, usually reaching 95% or more, hence the name "high reflectivity" or "super mirror" aluminum sheet. This material is made by precision rolling, grinding and other advanced surface treatment processes, making the surface of the aluminum sheet present a mirror-like gloss and smoothness.
Compared with ordinary mirror aluminum sheet (reflectivity is about 86%), high reflectivity mirror aluminum sheet is more outstanding in reflection effect and can reflect light more effectively. It is often used in application scenarios that require high brightness reflection or high aesthetic requirements.
This type of aluminum sheet not only has excellent optical properties, but also often has good corrosion resistance, durability and processability. Some products will also undergo additional surface protection treatment to ensure that its reflectivity is stable, not easy to change over time, and can extend its service life. Due to its excellent performance,mirror aluminum sheet is widely used in lighting reflectors, solar collectors, indoor and outdoor architectural decoration, electronic products, automotive decoration, furniture and various high-end decoration fields.
How to produce high reflectivity mirror aluminum sheet
The production of mirror aluminum sheets mainly involves the following key steps and processes:
- Alloy selection and smelting: First, select a suitable aluminum alloy as raw material, such as 5N5 high-purity aluminum or specific industrial pure aluminum (such as 1070, 1085, etc.). These alloys are suitable as mirror aluminum sheets due to their good polishing performance and stability. basic materials. The material is precisely smelted and cast into shape.
- Hot rolling and cold rolling: The initially formed aluminum sheet will go through hot rolling and cold rolling processes to adjust the thickness and improve the flatness of the material. Hot rolling helps to form, while cold rolling further refines the grains and improves the material's mechanical properties and surface quality.
- Mechanical polishing: After obtaining a basic straight board surface, use mechanical polishing technology to remove surface flaws and micro-irregularities. This step can significantly improve the surface finish.
- Electropolishing: This is a chemical treatment process that uses electrolysis to remove an extremely thin layer of surface metal to obtain a smoother, highly reflective surface. The choice of electrolyte (e.g. perchloric acid type or sulfuric acid-phosphoric acid type) is critical to the final surface quality and reflectivity.
- Continuous rolling: For some high-end products, a continuous rolling process may be used to repeatedly roll the surface of the aluminum sheet through high-precision mirror rollers. This step is particularly critical to improving the flatness and mirror effect of the surface.
- Surface protection treatment: In order to maintain long-term high reflectivity and prevent oxidation, the surface of the polished aluminum sheet will undergo anti-oxidation treatment, such as anodizing, coating or other forms of sealing treatment to enhance corrosion resistance and maintain gloss.
- Quality inspection and cutting and packaging: Finally, the finished products are subjected to strict surface quality and reflectivity testing to ensure that they meet the expected standards, and then they are cut and packaged according to customer needs.
The entire production process needs to be carried out in a strictly controlled environment to ensure the purity of the material, processing accuracy and surface treatment quality, so as to obtain a high reflectivity mirror aluminum sheet.
What are the applications of high reflectivity mirror aluminum sheet?
Lighting industry: As a reflector and decorative material for lamps, it improves the efficiency of light sources and enhances the beauty of lighting.
Solar energy field: Used as a reflective material for solar collectors and photovoltaic power generation systems to improve the efficiency of light energy absorption and conversion.
Architectural decoration: Indoor and exterior wall decoration, using its high reflective properties to create a sense of modernity and space, and can also be used for ceilings, wall decorative panels and curtain wall systems.
Tubular Daylighting Devices (TDD): Tubular Daylighting Devices (TDD) is an innovative green lighting technology that aims to bring natural light into buildings, especially those spaces that are difficult to get sufficient natural light directly through windows.
Special applications: Such as reflective parts of optical instruments, art installations, and custom projects that require precise reflection or aesthetic effects.
Huawei high reflectivity mirror aluminum sheet
The high reflectivity aluminum sheet provided by Huawei is a PVD anodized aluminum mirror sheet, the reflectivity of which can reach more than 99%. Huawei Aluminum provides mirror aluminum sheets with various reflectivities. We can customize 1000-8000 series aluminum sheets and aluminum sheets with different reflectivities according to customer needs.
