6061 Aluminum alloy wheels for commercial vehicles

With the gradual establishment and implementation of the national energy conservation and emission reduction, green environmental protection policy and regulation system, with the pace of building a friendly society

The concept of speeding up and lightweighting of automobiles has been paid more and more attention by enterprises. On the one hand, light metal materials for automobiles are concentrated on the body, and at the same time, the amount of rotating parts and vibration parts is also increasing day by day. In terms of mass, wheels occupy the first place. By using lightweight aluminum wheels, not only can the energy consumption of the vehicle be reduced during acceleration, but also a small tangential force can be achieved when the wheels are connected to the body suspension, which is beneficial to the size design and quality optimization of the body and the walking system. of.

At the same time, the unsprung mass is reduced due to the use of aluminum wheels, and the driving performance and driving comfort of the car are also improved incidentally.

The lightweight of automobiles is essentially the lightweight of components. In general, all wrought aluminum alloys can be used for forging, but by

Most of the forgings are based on strength, so commercial vehicle aluminum wheels should be forged with high-strength and easily heat-treated deformed aluminum alloys (such as 6061 recommended in the ASTM B 247M-02a standard). The chemical composition is shown in the attached table as follows:

The use of forged 6061 aluminum alloy wheels can greatly reduce the weight of the car. For example, a 40t heavy truck semi-trailer transport system has a total of 22 wheels, plus a total of 24 front and rear spare tires. Calculated based on the currently commonly used steel wheels, if it is replaced with forged aluminum alloy wheels, the weight can be Lose nearly 600kg. Not only that, because aluminum alloy materials have the characteristics of good heat dissipation and prevent tire rubber aging, trucks, buses and trailers equipped with forged aluminum alloy wheels can save 26% of tire consumption, which shows that the effect of energy saving and emission reduction is quite obvious.

Compared with ordinary steel wheels, 6061 aluminum alloy wheels have three major advantages:

• One is lightness. The weight of the forged aluminum wheel is only 1/2 of that of the steel wheel. After the forged aluminum wheel is installed, the weight of the whole vehicle is reduced, the rotational inertia of the wheel is reduced, and the acceleration performance of the vehicle is improved.
• The second is to reduce fuel consumption. It can reduce the friction of tire parts, reduce unnecessary power consumption of passenger cars, and save 2% to 8% of fuel.
• Third, the product is more safe and reliable. Due to the characteristics of forged wheels, the wheels are not easily deformed and are safer to use.

Due to the high specific strength of aluminum alloy wheels, they can carry a high load under a lighter self-weight, and have higher safety. For cars, it will undoubtedly improve their own grades and selling points; and forged aluminum alloy wheels High strength and high load characteristics, more suitable for heavy-duty trucks and luxury buses. The application of forged aluminum wheels to heavy-duty vehicles and luxury buses is only in the initial stage of promotion abroad, and it is basically blank in China. Therefore, wheel manufacturers should gradually focus on commercial vehicles such as heavy-duty vehicles, light-duty trucks, and luxury buses while supporting cars. For commercial vehicles, the significance and advantages of using aluminum wheels have become more and more obvious in terms of energy saving, cost-effectiveness, or national mandatory laws and regulations. It is also becoming more and more mature, and these will become a positive driving force and effective measures to promote the lightweight process of commercial vehicles.