Aluminum Type Aluminum is a non-ferrous metal that plays a significant role in various industries. It is commonly divided into two main categories: aluminum profiles and die-cast aluminum alloys. These materials are made by melting high-purity aluminum ingots (over 92% purity) and adding other elements like silicon, magnesium, or carbon to enhance strength, hardness, and wear resistance. This creates a range of aluminum alloys tailored for specific applications. 1.1 Aluminum Profiles Aluminum profiles are widely used in construction and furniture design, such as window frames, screen structures, and decorative components. They are manufactured through an extrusion process where the molten aluminum is forced through a mold to create complex shapes. The material meets national standards like GB6063 in terms of mechanical properties. One of the key benefits of aluminum profiles is their lightweight nature—only about 2.8 times denser than water. They are also corrosion-resistant, easy to customize, and offer a smooth finish after anodizing, which forms a protective oxide layer up to 0.12 mm thick. The wall thickness can vary between 0.5 to 5 mm depending on the design needs, and it's not always better to have thicker walls. Proper design and optimization are essential for structural integrity. However, there are some challenges with surface quality. Issues like warping, black lines, bumps, and uneven surfaces may occur. These defects can be minimized through advanced manufacturing techniques and careful mold design. During inspection, visual checks at a distance of 40–50 cm are typically used to identify any imperfections. Aluminum profiles are highly versatile and used in many applications, including furniture frames, hanging beams, table legs, handles, and decorative trims. Their flexibility allows for creative and dynamic designs. Despite these advantages, aluminum has some drawbacks. It is more expensive than iron products—about 3 to 4 times higher in cost. Also, unoxidized aluminum can degrade over time, and its surface is less scratch-resistant compared to plated materials. Its longitudinal strength is also lower than that of steel. 1.2 Die-Cast Aluminum Alloys Unlike aluminum profiles, die-cast aluminum alloys are produced using a different method. Raw materials are melted and then poured into a mold under high pressure. This process allows for intricate and detailed shapes, similar to toys or custom parts. Die-cast aluminum is known for its high hardness and can even be combined with zinc to form zinc-aluminum alloys. The production process includes several steps: die casting, rough polishing to remove excess material, and fine polishing for a smooth finish. However, this method requires expensive molds, and any design errors are costly to fix. The production cycle is longer, and polishing is more complex compared to injection molding. The cost of die-cast aluminum parts is also significantly higher—about 3 to 4 times that of injection-molded parts. Additionally, screw holes must be larger (around 4.5 mm in diameter) to ensure stability. These parts are commonly used in furniture components like table legs, connectors, decorative caps, and support structures for countertops and coffee tables. Wuxi Ding Guohua Hand drawn Wallpaper Co., Ltd , https://www.silkwallpaperasia.com
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