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As the development of the automobile market is getting better and better, and the quality of automobiles has been greatly improved, our automobiles generally have to be driven for at least ten years, especially for ordinary people. Although the quality of this car is better, we should also pay attention to some issues, such as maintenance, this car is a larger part, its internal parts are various, if it is used for a long time, it must be replaced , otherwise it will have a certain impact on the car.

On October 11, Michelin (China) Investment Co., Ltd. announced the launch of a new tubeless fuel-efficient tire product for trucks and buses - Michelin Liqihang 12R22.5XLineEnergyZ. This tire is upgraded on the basis of Michelin XCoachEnergyXZ and can be widely used for long-distance transportation under good road conditions such as highways, which will bring better fuel-saving effect, stronger wet grip, and better long-mileage performance. Mr. Xia Maoting, Senior Vice President of Michelin (China) Investment Co., Ltd., said: "Today's release of this new and upgraded fuel-efficient tire is another example of Michelin's long-term commitment to the Chinese market. With the continuous development of China's transportation industry, Chinese consumers The requirements for tire products are constantly improving. In order to better meet the needs of the Chinese truck and bus tire market for fuel efficiency and long mileage, Michelin has comprehensively upgraded the tire's formula and pattern to further improve tire performance." Michelin Lee Its line 12R22.5XLineEnergyZ improves the rubber formula and carcass structure by using Michelin fuel-saving technology, thereby significantly reducing the rolling resistance of the tire to achieve a good fuel-saving effect. Under normal conditions of use, the fuel-efficient tire can achieve at least 3% reduction in fuel consumption compared with ordinary radial tires. This product also uses Michelin durability technology. The technology is a complete set of breakthrough technologies that integrate tread pattern and tire structure, taking tire performance to new heights. Among them, Michelin's patented double-wave three-dimensional tread pattern design significantly improves the tire's grip performance on wet and slippery roads, bringing drivers a safer driving experience. The special rubber formula designed for good roads such as highways further enhances the wear resistance of the tire. The interlocking design of double wave patterns inside the pattern effectively reduces abnormal wear and improves mileage performance. In addition to the comprehensively upgraded tire products, in order to help users choose the right product, Michelin Group recently launched a new product name for truck and bus tires. This new product released this time adopts a new and upgraded naming pattern. After the upgrade, users can easily understand the correct use of the tire from the new name of the tire. The new tire name will be directly related to the use characteristics of the tire, and it will be accompanied by a vivid image description. The name also clarifies the use of the tire and the correct position of the tire installed on the vehicle, so that users in various countries can understand the meaning of the name at a glance. . In order to better meet the needs of users in the Chinese truck and bus market, Michelin China's truck and bus tire product line has added a simple and easy-to-understand Chinese name to each product series. It is believed that Chinese truck and bus users can use the tires correctly through their Chinese names, so as to maximize the high-performance advantages of Michelin tires.

type of tire International standard tire code, expressed in millimeters as a percentage of section height and aspect ratio. Add: tire type code, rim diameter (inch), load index (allowable bearing quality code), allowable speed code. For example: 175/70R 14 77H in 175 means the tire width is 175MM, 70 means the aspect ratio of the tire section is 70%, that is, the section height is 70% of the width, the rim diameter is 14 inches, the load index is 77, and the allowable speed is H class.

China occupies a very important position in the world aluminum wheel industry. In terms of technology of passenger car aluminum wheels, domestic brands have been recognized by international high-end passenger car brands. On November 3, 2014, "China Quality Miles" made an exclusive interview with Wang Xiaodong, Deputy Secretary-General of the Wheel Committee of China Association of Automobile Manufacturers. Wang Xiaodong said that China occupies a very important position in the world aluminum wheel industry. After more than 20 years of rapid development in the aluminum wheel industry in China, domestic manufacturers led by CITIC Dicastal have ranked first in the world in terms of production scale. In addition, in terms of the technology of passenger car aluminum wheels, domestic brands have been recognized by international high-end passenger car brands, and there are cases of successful matching. The development status of China's aluminum wheel industry With the rapid development of my country's automobile market and the continuous introduction of technology, the manufacture and application of aluminum alloy wheels have also developed rapidly. In 1988, my country's first aluminum alloy wheel enterprise, Dicastal Aluminum Wheel Manufacturing Co., Ltd., was established. Since then, aluminum alloy wheels have been rapidly promoted in my country. Talking about the status quo of the development of China's aluminum wheel industry, Wang Xiaodong summed up a set of numbers "65431" based on the data in 2013: "6" means that China's aluminum wheel production capacity is equivalent to 60% of the world's annual production capacity; "5" means China's aluminum wheel production capacity. More than half of the wheels are exported; "4" means that the annual output of China's top four manufacturers (CITIC Dicastal, Lizhong, Liufeng, Wanfeng Auto) is close to 50% of the total output; "3" means the current aluminum wheels in China The industry has 3 state-level enterprise technology centers, 3 listed companies (Wanfeng Auto, Lizhong, Yueling), and 3 executive director units under the Automobile Industry Association; "1" means that China's aluminum wheels are used in all auto parts. Exit first. Wang Xiaodong in the office "At present, China's aluminum wheel industry is ahead of other domestic auto parts. Judging from the data of '65431', it can be concluded that China's aluminum wheel industry has the 'three things', that is, scale, technology, There is a brand. The healthy development of the industry is inseparable from the quality assurance system of the enterprise, which has promoted the progress of the entire industry.” Wang Xiaodong said. Types of aluminum wheels According to Wang Xiaodong, there are currently two main types of aluminum alloy wheels: 5° deep groove wheels, which are mainly used for passenger cars; and 15° deep groove wheels, which are mainly used for commercial vehicles. In recent years, the state has issued guiding or mandatory industrial policies and regulations to promote the adjustment and upgrading of automobiles and related structures. For example, supporting the development of radial tires and restricting the expansion of the production scale of bias tires have created conditions for the promotion of tubeless wheels for commercial vehicles. However, due to the serious overloading of domestic vehicles, some manufacturers take the method of thickening wheel materials in order to solve the damage caused by overloading of wheels, which is not conducive to the development and application of new materials and new processes in the wheel industry, and affects technological progress. my country's aluminum wheel manufacturing technology From the aspect of molding technology, low-pressure casting is the most widely used molding method at present, about 85%, and the equipment automation degree is relatively high, which is more suitable for OEM matching. Gravity casting has also been used to a certain extent, and has shifted from pure manual casting to robotic automatic casting. Casting and spinning process is the direction of development in recent years, and it is an effective means to achieve lightweight. At present, the application of forging and spinning technology is not common in domestic car wheels. It is mainly used in truck aluminum alloy wheels. At present, the domestic target market is not large. From the perspective of heat treatment technology, the traditional well-type heat treatment furnace is transformed into a continuous roller frame heat treatment furnace. Continuous heat treatment furnaces are also available in frame type, single-layer stepping type, and single-layer continuous type. The advantages of the latter in terms of equipment temperature control, transmission cycle, etc. are very obvious. At the same time, many domestic wheel manufacturers have also begun to do some exploratory research on heat treatment technology, starting from the traditional single-stage T6 aging, and b

After the invention of vulcanized rubber by Charles Goodyear in 1839, rubber tires began to be widely used in various vehicles. But until the end of the 19th century, the rubber tires on cars were solid. These tires have poor ability to absorb road impact, resulting in violent vibrations and loud noises when the car is driving. Although the speed of the car was very slow at the time, in order to cope with the impact of the road, the suspension and body had to be designed very heavy to increase the mechanical strength.

Driving on the road, suddenly found that the tire was punctured, which is a phenomenon that all car owners do not want to see. But if the punctured tire is to continue to be used, it is necessary to pay close attention to the tire repair. There is a question when filling tires: should it be repaired internally or externally?

1. Overview of the current situation of wheel products There are three main product types of automobile wheels: tubeless wheels for cars (passenger cars); tubeless wheels for commercial vehicles; tubeless wheels for commercial vehicles (section steel). Among them, the first two are divided into steel wheels and aluminum wheels, and the latter also uses aluminum alloy materials in very rare cases.