Aluminium round circles are typically made from pure or low-alloy aluminum through rolling and shearing, without surface coating, preserving the inherent metallic texture and basic properties of aluminum. Their core advantages lie in their high processing flexibility and manageable costs. They can be subjected to secondary processing such as stamping, stretching, and bending as needed. Therefore, they are widely used in applications where surface decorative effects are less demanding but ductility and thermal conductivity are required.
In the kitchenware industry, aluminum disc circles are commonly used in frying pans, pressure cooker bases, and rice cooker inner pots. Aluminum's excellent thermal conductivity ensures even heat transfer, preventing localized overheating. Stamped and stretched aluminum discs can be tailored to the desired shape of the cookware, and their relatively low cost makes them suitable for large-scale production. For example, the inner base of a common, affordable non-stick pan is often made from ordinary aluminum discs, which are then upgraded with a non-stick coating.
Aluminum round sheets are also commonly used in the lighting industry and transportation accessories. In lighting, aluminum can be processed into heat sinks for lamps, leveraging its thermal conductivity to dissipate heat and extend the lamp's lifespan. In the transportation sector, accessories such as wheel hubcaps and rearview mirror bases for small vehicles are also stamped from ordinary aluminum discs, reducing component weight while maintaining structural strength.
Compared to ordinary aluminum discs, the coated aluminum circle undergoes an additional "surface coating" process during production. Through processes such as roller coating and spraying, one or more functional coatings (such as polyester, fluorocarbon, and epoxy) are applied to the surface of the aluminum disc. These coatings not only enhance the aluminum disc's corrosion and wear resistance but also impart rich colors and textures, allowing the product to achieve both practicality and decorative appeal. These coatings are particularly suitable for applications requiring high surface performance and appearance.
Coated aluminum discs are particularly popular in home appliance exterior parts. Many applications, such as refrigerator side panels, washing machine control panels, and air conditioner housings, utilize polyester-coated aluminum discs. The polyester coating offers excellent weather and impact resistance, protecting against scratches, moisture, and dust from daily use. Furthermore, its diverse color options (such as white, silver, and light gray) complement the overall design of the appliance, adding a touch of sophistication. For example, a certain brand of vertical air conditioner uses light gray polyester-coated aluminum discs on its exterior housing, which prevents aluminum from oxidizing and darkening while also blending in with the home environment.
Painted aluminum discs also have a niche in outdoor decoration and architecture. Fluorocarbon-coated aluminum discs are often used in outdoor billboard panels, decorative components for landscape sculptures, and gussets for integrated ceilings. Fluorocarbon coatings offer excellent UV resistance, resisting fading and aging even with long-term exposure to sunlight. They are also waterproof and moisture-resistant, making them suitable for complex outdoor climates. For example, the circular decorative elements of a metal billboard downstairs in a residential building may be fluorocarbon-coated aluminum discs, which maintain their vibrant color and require minimal maintenance.
Colored aluminum discs also play a role in everyday products. For example, the outer shells of high-end cosmetic cases and the decorative panels on the body of thermos bottles often utilize textured aluminum discs. The coating creates effects such as frosted, brushed, and pearlescent finishes, enhancing the product's quality and appeal, satisfying consumers' pursuit of aesthetics.
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