Wheel hub is an important driving component of a car. To put it more vividly, if the tire is a shoe, then the wheel hub is the foot. With the growth of China's automotive parts industry, the wheel hub industry has gradually developed and grown. According to the "2013-2017 Analysis Report on Market Outlook and Investment Strategy Planning of China's Automotive Wheel Hub Industry", macroeconomic policies that focus on stimulating domestic demand have provided a foundation and guarantee for the steady development of the automotive industry since 2010.

The history of wheels can be traced back to 6000 years ago, but they were originally made of stone or wood as materials. Nowadays, the wheel hub made of magnesium alloy is the most advanced, and it bears an important part of the load during the driving process of the car. What kind of transformation has it undergone to achieve today's wheel hub? Let me lead you to explore this mysterious history together:

Wheels made of stone and wood materials

Stones held a special position in ancient times as the primary tool for moving objects. Later, someone discovered that rolling wooden stakes can be used to move heavy objects, saving a lot of trouble and making the effect more obvious. So it became more stable, smooth, and easy to control. In the 1st century BC, the Romans used wooden bars to support wooden wheels. Especially the royal and aristocratic carriages are particularly green and narrow.

In 1887, the British used iron bars as support and combined them with inflatable rubber tires to bid farewell to bumps and discomfort. From then on, bicycles became a popular means of transportation. With the development of society, humans have used great wisdom to create motorcycles with spoke wheels, making them wider, wider, and more aesthetically pleasing. Compared with bicycles, they have higher strength, better toughness, save physical energy, and have wider adaptability in the wild.

In the early days, car wheels inherited spokes, and densely packed spokes were the main feature of wheels during this period, radiating from the wheel hub to the wheel steel.

With the development of technology, steel wheels that we are very familiar with have emerged. The first steel wheels were completely bare, but they looked heavy and simple, and their appearance was not beautiful. However, their advantage lies in the metal hardness, which is suitable for rough and bumpy roads.

Further development is aluminum alloy wheels, which have obvious advantages such as light weight, high heat dissipation efficiency, superior and stable shock absorption, and are also very beautiful.

Magnesium alloy material is a lightweight material with a density of 1.74-1.85 g/cm3, which is about 2/3 of aluminum and less than 1/4 of cast iron. During the casting process, a large pouring and injection force is used; Its elastic modulus is 45 GPa, which is about 2/3 of iron and 1/4 of cast iron. It is prone to significant deformation under external forces, which can prevent excessive stress concentration in the load-bearing components and make the force more uniform; The cutting resistance is about 1/3 of cast iron and 1/2 of aluminum alloy, and the consumption of molds is small during processing, resulting in high production efficiency.

So, the advantages of magnesium alloy die-casting parts and magnesium alloy wheels are as follows:

1. Comfort of driving forward

Magnesium alloy wheels have the characteristics of absorbing vibration and rebound force, with high dimensional accuracy, small deflection and jumping, and good balance processed by CNC machine tools, making the car travel smoothly and comfortably.

2. Safety of driving forward

The heat dissipation coefficient of magnesium alloy wheels is two to three times that of general wheels. In addition, the structural characteristics of magnesium alloy wheels can simply transfer the heat generated by the braking system to the air. Even if the braking system is continuously applied during long-term driving, it can maintain a lower temperature and ensure the safety of the vehicle.

3. The beauty of the whole vehicle moving forward

The appearance planning of magnesium alloy wheels is exquisite, with diverse shapes, and the beauty of the entire vehicle is highlighted in the planning, highlighting the distinctive and luxurious feeling.

4. Stability in driving forward

The widening of the tires enhances the grip and braking function, and provides useful handling and driving interest for forward driving.

5. Forward acceleration time

The use of magnesium alloy casting wheels effectively reduces the overall weight of the vehicle and reduces acceleration time.

6. Forward fuel saving ability

The lightweight of magnesium alloy wheels reduces the rolling inertia of the wheels, enhances the acceleration of the car, and reduces the energy demand for braking, thereby reducing fuel consumption.

7. Advancing environmental protection skills

Reducing the weight of the wheels while lowering fuel consumption is of great significance to the environment, and reducing carbon dioxide emissions is of great importance to environmental protection.

8. Forward Economy

The weight reduction of cast wheels can reduce fuel consumption by 2% to 6% compared to cast wheels, which has significant economic benefits.

The above is the development history of automotive wheels, describing the different wheels used in different eras, as well as the shortcomings and advantages of various wheels. Today, magnesium alloy wheels have multiple advantages. We believe that in the future development trend, the application of magnesium alloy will continue to be used in various fields, strengthening the introduction of new energy!