A long time ago, 18 pneumatic tire was made of wood, iron and other materials. Unfortunately, because there is no canvas in the inner layer, it cannot maintain a certain cross-sectional shape and width.
1895 With the appearance of automobiles, pneumatic tires have been widely developed. The first batch of automobile tire samples appeared in France on 1895. It is a single inner tube tire made of plain canvas, with tread rubber but no pattern. It was not until 1908 to 19 12 that obvious changes took place in the tire, that is, patterns appeared on the tread rubber to improve the service performance, which opened the history of tire tread patterns, increased the cross-sectional width of the tire and allowed lower internal pressure to ensure better cushioning performance.
1892, curtain cloth was invented by Berimir in England, and was used in production in 19 10. This achievement has improved the quality of tires, expanded the variety of tires, and made it possible to mold outer tires. With the improvement of tire quality requirements, the quality of cord fabric has also been improved. Cotton cord fabric was replaced by rayon, which was replaced by nylon and polyester cord with better strength and heat resistance in the late 1950s. With the development of radial tire, steel cord has strong competitiveness.
1904, Matt created carbon black reinforced rubber, which was widely used to reinforce tread rubber after tire cord fabric was used. Because before this, canvas was damaged faster than tread in tire use. The amount of carbon black in rubber mixture increases rapidly. In 1930s, only about 20 parts of carbon black were used in every 100 part of raw rubber. At this time, the tread is mainly made of carbon black, and the carcass is not used, reaching more than 50 copies. Before carbon black is added to the tread, the tire is polished after driving about 6000km; After adding carbon black, the mileage of the tire will be obviously improved soon. A set of truck tires can travel about 654.38+ million kilometers, and even 200,000 kilometers on good roads.
19 13 ~ 1926, the invention of cord and carbon black tire technology laid the foundation for the development of tire industry. With the standardization of tire outer edge and the gradual improvement of manufacturing technology, the production speed is higher than before, and the output of tire is increasing day by day.
With the development of automobile industry, tire technology is constantly improving and improving. For example, from the early 1920s to the mid-1930s, automobile tires changed from low-pressure tires to ultra-low-pressure tires; In the 1940 s, tires gradually transitioned to wide rims; Tubeless tires appeared in the late 1940s. In the late 1950s, low-profile tires came out and so on. The emergence of many new technologies is nothing more than the radial tire pioneered by Michelin in France in 1948. This kind of tire is known as the revolution of tire industry because of the remarkable improvement of service life and performance, especially the fuel saving during driving.