How to repair the out-of-roundness of the aluminum alloy wheel hub of the automobile

How to repair the out-of-roundness of automotive aluminum alloy wheels is a high-tech enterprise in my country that focuses on the research and development, design, production and sales of aluminum alloy wheels, and an export base of auto parts in my country. It is located in Guangde Economic Development Zone, Anhui (the junction of Jiangsu, Zhejiang and Anhui) Office), the geographical position is superior and the transportation is convenient. The company covers an area of ​​120 mu, with a registered capital of 118 million yuan, total assets of nearly 180 million yuan, and more than 300 employees. It has 11 authorized inventions, 18 utility model patents, and 40 design patents. The company's stock was listed on the New Third Board on August 12, 2016. The stock code is 838269. The stock is referred to as "Technology". Special new "small and medium-sized enterprises, provincial high-tech cultivation enterprises.

On average, each aluminum alloy wheel is 2 kg lighter than a steel wheel of the same size, and a five-wheeled vehicle can save 10 kg. Although aluminum alloy wheels are more expensive than ordinary steel wheels, the fuel cost savings will be enough to offset the cost of driving 20,000 kilometers per car. The impact resistance, tensile strength and thermal strength of aluminum alloy wheels are higher than those of steel wheels.

This is also one of the reasons why aluminum alloy occupies an important position in my country's imitation industry and aviation industry. The precision can be as high as 0.05mm, and the balance performance is good, which is beneficial to eliminate - in addition, the general body length and steering wheel vibration. How to repair the out-of-roundness of automobile aluminum alloy wheels The company has accumulated many years of production experience in line with the principles of technological innovation and independent research and development, and always adheres to the marketing purpose of "customer first, honest management"; the demand is "to satisfy all customers", strong research and development Ability; the company has a complete and scientific quality management system.

The company's integrity, strength and product quality have been recognized by the industry. Taking quality as the core, adhering to the business philosophy of "internationalization, branding, and scale", it is committed to "continuous improvement, pursuit of high-quality products, improvement of service quality, and satisfaction client needs". The compressive strength of aluminum alloy wheels is quite high, and the compressive capacity of ordinary household wheels is more than 20 tons. The use of such wheels in actual trucks can meet the requirements, but the brittleness of aluminum alloy materials is poor, that is, when the compression limit is 20 tons, the elastic deformation space before fracture is very small, as long as the standard basic fracture moment is exceeded.

Therefore, off-road vehicles often do not use aluminum alloy wheels. Occasionally flying will easily cause the wheel to break, but again, the possibility of such a situation is very small for off-road domestic vehicles. The wheels of this material can meet various paved and normal non-paved roads. road commuting. The company was founded in 2011. After more than seven years of development and operation, the company has become a large-scale enterprise in the domestic aluminum alloy wheel industry with product serialization, large-scale production and brand management. In order to ensure the safety and reliability of the vehicle to a large extent, no matter how old the vehicle is, it is necessary to check the wheel hub of the car frequently, and pay attention to whether there are early warning signs of wear, including friction noise when turning or suspension combination wheel turning. Abnormal deceleration.

If you hear car wheel bearing noise, first, it is important to find out where the noise is coming from. Many moving parts may create noise, or some rotating parts may be in contact with non-rotating parts. If it is confirmed that the bearing is noisy, the bearing may be damaged and needs to be replaced.

Since the failure conditions of the bearings on both sides caused by the front hub are similar, even if only one bearing is damaged, it is recommended to replace it in pairs. Prepare the color according to the original color of the rim, and choose different types of sandpaper for grinding according to the degree of damage. We need to repaint the car rim. But before painting, we tried to use waste newspapers to isolate the edge of the wheel hub to prevent the spray paint from splashing on the tires.

Put it in the equipment at 100-120℃ to dry for 60 minutes, then grind it again to a matte finish. If it still feels a little hairy, you can continue to smooth it with sandpaper. Cover the rim with a universal shielding film, wipe the surface of the rim with a degreaser, dry it with equipment, and wipe the surface dust with a dustproof cloth.

Automobile wheels are mainly divided into steel wheels and light alloy wheels according to their materials. Light alloy wheels are mainly made of aluminum alloy and magnesium alloy. In today's automobile market, steel wheels are rare, and most models use aluminum alloy wheels, that is, light alloy wheels. The aluminum alloy materials used to make aluminum wheels include A356, 6061, etc., among which A356 is widely used as cast aluminum wheels.

A356 aluminum alloy has the characteristics of small specific gravity and good corrosion resistance. It is mainly composed of aluminum, silicon, magnesium, iron, manganese, zinc, copper, titanium and other metal elements, and aluminum accounts for about 92%, which is a mature aluminum alloy material. How to repair the out-of-roundness of the aluminum alloy wheel hub of the car The slight deformation cannot be seen with the naked eye, and the deformation cannot be seen inside the wheel hub of the car.

At this time, when driving fast, the steering wheel shakes, indicating that the wheel hub of the car may be deformed, and it is time to balance it. Hub flanges are divided into inner flanges and outer flanges. The outer flange is visible, but the inner bridge is not.

However, when getting out of the car at high speed, you can pay attention to whether there is vibration in the steering wheel or whether the tire is leaking. If there is one of these two cases, it must be deformed. If the hub of a car is cracked in a big pit, it will definitely be deformed.

At this time, it is necessary to repair the deformation when repairing the crack.