Extruded Aluminium Rim for Bicycle

Today, bicycles have become the simplest, most practical and most used means of the vehicle in the world. Sharing Bikes, in particular, is becoming more and more popular. Now the fabric of the bicycle is mainly made of aluminium alloy, magnesium alloy, titanium alloy and carbon fiber. The bicycle frame greatly reduces the weight of the bicycle. The multi-speed transmission mechanism makes the bicycle faster and faster.

While the performance of bicycle has greatly improved, the stability of bicycle operation has been paid more and more attention by consumers, especially the mountain bike. Bicycle wheel or rim is an important part that keeps the bike running smoothly. Because that aluminium alloy is cheaper than the magnesium alloy, titanium alloy, and carbon fiber material, and possesses the advantages of lightweight, not rust, therefore, the most current used is aluminium alloy rim.

Currently, the common aluminium rim contains Single-wall and Double-Wall aluminium rim. Because the spoke & nipple directly touches the inner tire in Single-wall aluminium rim, it's easy to wear out inner tire. But double-wall aluminium rim is to overcome this shortcoming, at the same time, strengthen the intensity. Therefore double-wall aluminium rim has more advantages.

The material of aluminium bicycle rim is aluminium alloy 6061-T6; alloy 6061 belongs to Al-Mg-Si series, moderate intensity, and has good plasticity and excellent corrosion resistance. In particular, there is no stress corrosion cracking tendency, it has good welding property, corrosion resistance and cold processing. The surface can be anodized oxidation and applied enamel to lacquer. Because alloy 6061 contains a small amount of Cu, the strength and quenching sensitivity is higher than alloy 6063.