Tire protection has been in place for the past four months, but it has continued to spread. What is the impact of a tire special security case on China's entire tire industry? Insiders believe that at best, it can only be "stretched", but it will definitely not "move bones." Because after many years of development, the quality of domestic tires has been moving on a new road. "In fact, compared with the world's top level, the production process, technology level and product quality gap of domestically produced tires are not large, and it can even be said that it is very close to the international level." Deng Yaxi, secretary general of the China Rubber Industry Association, said in an interview with this reporter. Ma Liangqing, deputy director of the State Rubber Tire Quality Supervision and Inspection Center, told reporters that the quality of domestic tires has been very stable, regardless of the tests they performed or the quality of tire products. Already small. At present, the safety performance and performance of domestic tires are no different from those of foreign products. Even in certain specifications, they are superior to foreign ones. However, in terms of comprehensive performance, such as stability of operation, noise control, and comfort Sex, etc., have a certain gap with the products of developed countries. What are the causes of these differences? The reporter conducted visits from raw materials and process design. Raw material "glue" urgent “At present, the international mainstream is radial tires, and the domestic market is basically the world of radial tires. There are few skew tires,†said He Hailiu, secretary general of the tire and automotive rubber products technology division of the China Automotive Engineering Society. The so-called radial tire refers to a pneumatic tire in which the carcass ply is arranged at an angle of 90 degrees or nearly 90 degrees to the direction of the surrounding tangential line, and the carcass is tightened by the belt. Huang Qiang, deputy director of the Department of Science and Technology of the Beijing Rubber Industry Research and Design Institute, pointed out that radial tires are based on the use of different types of skeleton materials. Common all-steel radial tires and semi-steel radial tires are common. The former belt and carcass layers are made of steel cords, generally mid-sized and light-duty truck tires; the latter belts are made of steel cords, and the material of the carcass layer is a fiber cord, such as nylon cord, polyester. Curtains, etc., are generally light load and car tires. It is not difficult to see that the raw materials of tires are mainly composed of two parts, one is rubber, which is the core material of tire production, and the other is the material of skeleton (nylon, polyester cord or steel wire, etc.). In addition, there are some chemical additives, including fortifiers, vulcanizing agents, vulcanization accelerators, vulcanization accelerators, viscous agents, anti-aging (aging) agents, and the like. It is understood that as the core material of tire rubber is divided into natural rubber and synthetic rubber two. The former is a raw material extracted directly from nature, while the latter is manufactured through chemical methods. In general, the comprehensive performance of natural rubber is superior to that of synthetic rubber, so senior tires mostly use natural rubber. However, the natural rubber tree is a tropical rain forest tree, the planting area is basically distributed in the latitude 15 °C north and south, mainly concentrated in Southeast Asia, accounting for about 90% of the world's natural rubber planting area. The main producing countries are Thailand, Indonesia and Malaysia. Natural rubber and coal, steel and petroleum are listed as the four major industrial raw materials, and they are the only renewable raw materials. At present, China has become the world's largest consumer and importer of natural rubber. “All-steel radial tires are dominated by natural rubber, and semi-steel radial tires are mostly made of synthetic rubber.†He Hailiu said: “Our country had successfully achieved the planting of natural rubber in Hainan Province through scientific and technological research and development, but after all, the weather conditions are not The optimum environment for the growth of natural rubber is still a gap between the overall quality and natural rubber grown in Southeast Asia." Huang Xiangqian told reporters that at present, the quality of synthetic rubber in China has basically reached the world level, and there has been an excess of production. The quality of raw materials has an important impact on the quality of finished tires. Due to the raw materials of domestic tires, whether they are rubber or steel wire, there is a gap between quality and the world's top brands, directly affecting the gap in the quality of tires. Zheng Yusheng, senior engineer of the National Rubber and Plastics Design and Technology Center, said: "Although China can import natural rubber, its quality is not exactly the same, because international tire giants such as Michelin have their own rubber plantations in Southeast Asia, starting with the cultivation of rubber. , Strict quality control until it becomes the raw material for tire production. Domestic brands are constrained by their strength and it is difficult to control them from the source at present. In addition, China's steel wire technology is also different from developed countries like Japan, and the final product quality There is a reasonable difference." Design and R&D into short boards When rubber, steel wire and other raw materials are ready to go to the tire production line to “reportâ€, the work on how to put them together in the best way and eventually produce first-rate quality tire products has started ahead of time. This is the design and development of tire products. “As a result of the overall strength, domestic tires generally lack investment in research and development in terms of manpower, material resources, financial resources, etc. In particular, some basic work, many companies are unwilling to invest in. Even if some companies start to make a difference in these aspects, but also Far less than a systematic project, lack of continuity." Zheng Yusheng said, "Foreign brands are different, honing design has become a fixed issue, they will continue to invest in research and development. From equipment, facilities, software design, etc. At the beginning, we will not only vigorously design our products, but will also always maintain the R&D of new products. It should be said that there is a clear gap between domestic tires and foreign top brands." He Hailiu believes that the lack of design in domestic tires is related to the history of tire development in China. After all, tire manufacturing technology is transferred from abroad to China, and our country can only begin to absorb foreign production lines and then absorb and eventually form its own technology to achieve localization. However, at present, domestic tyres are still largely at the stage of learning and imitating foreign products, especially in terms of design, they may be able to imitate them, but they will cause a situation that “we don’t know what is happeningâ€, and naturally it will cause a design. Become a short board. Huang Qian pointed out that after the rapid development of China's tire industry, it can basically meet the needs of industrial development, but it is inadequate in terms of tire design theory. Such designs include the need to first control the computer, find what kind of design can be the most fuel-efficient, comfortable And so on, and then also die. Because most tire products are not developed by the Chinese people, it is difficult to fundamentally improve. If the manpower, material resources, and financial resources of the enterprise cannot keep up, it will be difficult to support large-scale R&D. Industry analysts say that the gap between design and development is caused by the overall gap in the overall strength of the company, and it is also difficult for the company to change overnight. Perhaps raw materials can be imported, production equipment can be imported, and production technology and production technology can be studied, but R&D The results of the design and the design are the core secrets of the company and it is difficult to break through overnight. Zhang Keshun, head of the Shandong Linglong tire planning department, said that from the point of view of technology, equipment, and R&D, there is still a gap between China's tire companies and foreign countries, especially in terms of R&D. This has led to a clear gap in the “greenâ€. For high-end tire products such as environmental protection, the quality of domestic tires is not as good as that of foreign products. It is understood that the so-called "green tires" are mainly reflected in changes in raw materials, such as the use of environmentally friendly materials, there is a breakthrough in energy conservation, such as reducing fuel consumption, etc. These have to invest in R & D and design. "Green tires are more physical performance, such as low noise, low rolling resistance, and it is not a strict classification of tires. However, compared with foreign brands, our country has quality in terms of some new concept tire products. There are indeed gaps, such as run-flat tires, snow tires, etc., said Ma Liangqing. Usb Powered Dehumidifier,Usb Rechargeable Dehumidifier,Usb Dehumidifier For Car,Dehumidifier Usb Powered Yuyao Veedai Electrical Appliance Co., Ltd , https://www.kxveed.com
October 15, 2023