Chongqing tire remanufacturing technology breaks f

2022-10-24
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Chongqing tire remanufacturing technology breaks foreign monopoly

Chongqing's major scientific and technological breakthrough project - the key technology and demonstration project of waste automobile tire remanufacture has passed the expert review and acceptance a few days ago, and the automobile tire remanufacture production line with an annual output of 200000 tires and 300000 tread rubber has been officially put into operation in the same period, marking the gradual industrialization of technological innovation. China's automobile tire remanufacture technology has made a major breakthrough. However, the industry was not happy when the good news came. The CS [2011] No. 115 document issued at the end of last month abolished the value-added tax preference for tire turnover, thereby inhibiting the development of the tire remanufacturing industry. In addition, the popularity of no "Three Guarantees" tires makes the tire remanufacturing line face the dilemma of insufficient tire supply at the beginning of production

automobile tire remanufacturing technology is a remanufacturing industrial technology encouraged by China. In May, 2010, the national development and Reform Commission and other 11 departments jointly issued the "opinions on promoting the development of remanufacture industry", which listed large-scale old tire retreading as a key area for the development of remanufacture industry. Chongqing chaoke Industrial Development Co., Ltd. and Chongqing University jointly undertook the key technology and demonstration project of waste automobile tire remanufacturing, and successfully developed a series of new technologies, new processes and key equipment, such as ultra-low temperature pre vulcanization technology, which broke the technological monopoly of foreign companies and formed independent intellectual property rights

according to Li Shuqing, a professor at the school of environment and resources, Chongqing University, there are two kinds of tire retreading processes, namely, the traditional model method (also known as "hot turning") and the pre vulcanized tread method (also known as "cold turning"). The latter is an internationally popular new process developed in recent 30 years. Due to the low vulcanization temperature, it can effectively prevent the aging of the carcass, so as to increase the number of tire retreading and prolong the service life of the tire. Yuguanghua, chief engineer of chaoke company, told that the ultra-low temperature pre vulcanization technology developed by them can reduce the quantitative temperature of water in the sulfur water supply system of tire turnover to 90 ~ 95 degrees Celsius, which is lower than 95 ~ 100 degrees Celsius of Michelin and Bridgestone, and even lower than 115 degrees Celsius commonly used at home and abroad

but it was unexpected that the automobile tire remanufacturing line was in a dilemma at the beginning of production. Huang Yirong, chairman of chaoke company, told that the CS [2011] No. 115 document abolished the value-added tax preference for tire turnover, which would be a heavy blow to the promotion and application of new technologies and the improvement of SPF of this series of products. In addition, although the State prohibits the production, sale and distribution of non "San Bao" tires, the relevant enterprises do not abide by the law and the relevant departments do not enforce the law strictly, resulting in the popularity of non "San Bao" tires, which cannot be refurbished after being used

To this end, jiangzhongqin, chief economist of Beijing rubber industry research and Design Institute, and other industry experts called on the state to maintain the coordination and stability of policies, take practical and effective measures, and vigorously support the healthy development of tire remanufacturing industry

vigorously support the recycling of resources

QIAN min

every technological progress in the field of automobile tire remanufacture is of great significance to China, the world's largest rubber consumer. To build a resource-saving and environment-friendly society, China needs more tire remanufacture technology to support the cause of domestic resource recycling

China's dependence on natural rubber is more than 80%, while the global output of vanadium products in 2016 was 76530 tons (vanadium content). The rubber resources consumed in the production accounted for more than 70% of the total rubber consumption in China. Therefore, focusing on the remanufacture of old tires and the recycling of waste tires should become an important direction for the rubber industry to implement the scientific concept of development

at present, the new year's output of tires in China is only 13million, with a retreading rate of less than 5%, while the retreading rate of tires in developed countries is more than 45%. The average number of tire retreading in China is 1.3, while it has generally reached more than 3 in developed countries. It can be seen that there is a lot of room for the development of domestic tire remanufacturing industry

but it cannot be avoided that in order to catch up with the world's advanced level in this regard, China still needs the joint efforts of all parties concerned. In the design of new tires, we must consider the retreading rate and times, and strictly prohibit the production and sales of non "San Bao" tires, cut standard tires, etc. At the same time, in order to ensure personal safety, we must severely crack down on the production, marketing and use of fake and inferior tires

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