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The Material Structure Of Aluminum Wheel
Jul 24, 2017

Aluminum is one of the most widely used non-ferrous metal structural materials in industry. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. The rapid development of industrial economy, the increasing demand for aluminum alloy welded structural parts, so that the aluminum alloy welding research also will be in-depth. Aluminum is currently the most widely used alloy.

Material properties

Aluminum alloy density is low, but the strength is relatively high, close to or more than high-quality steel, plastic good, can be processed into a variety of profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, widely used in industry, The Some aluminum alloys can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance. Hard aluminum alloy AI-Cu-Mg system, generally contains a small amount of Mn, heat treatment enhanced. It is characterized by large hardness, but poor plasticity. Super-hard aluminum Al-Cu-Mg-Zn series, heat treatment enhanced, is the highest strength aluminum alloy at room temperature, but the corrosion resistance is poor, high temperature softening fast. Aluminium alloy is mainly Al-Zn-Mg-Si alloy, although the addition of many types of elements, but the content is small, which has excellent thermoplastic, suitable forging, it is also known as forged aluminum alloy.

Material structure

Pure aluminum has a low density (ρ = 2.7g / cm3), about 1/3 of iron, low melting point (660 ℃), aluminum is a face-centered cubic structure, so it has a high plasticity (δ: 32 ~ 40% Ψ: 70 ~ 90%), easy to process, can be made of various profiles, sheet, good corrosion resistance. But the strength of pure aluminum is very low, annealing state σb value of about 8kgf / mm2, it is not suitable for structural materials. Through long-term production practice and scientific experiments, people gradually to join the alloy elements and the use of heat treatment and other methods to strengthen the aluminum, which got a series of aluminum. The addition of certain elements to form the alloy in maintaining the advantages of pure aluminum and other advantages can also have a high strength, σb values up to 24 ~ 60kgf / mm2. This makes its "specific strength" (the ratio of strength to specific gravity σb / ρ) is better than that of many alloy steels, making it ideal for structural materials, widely used in machinery manufacturing, transportation machinery, power machinery and aviation industry. , Skin, compressor and other often made of aluminum to reduce their weight. Aluminum alloy instead of steel plate welding, structural weight can be reduced by more than 50%.

The hub, the alias rim, the tire inner frame to support the tire's drum-shaped, center-mounted components on the shaft. Common car wheels are steel wheels and Aluminum Wheel. Steel wheels with high strength, commonly used in large trucks; but the quality of steel wheels, shape a single, do not meet today's low-carbon, fashion concept, is gradually replaced by Aluminum Wheel. Currently on the market by car the original wheels are basically aluminum wheel.