Bronze wheel
Around 2000 BC, people began to make wheels out of bronze. This kind of wheel is lighter and stronger than wooden wheels. The bronze wheel is made by connecting two bronze discs with rivets, and then using wood as spokes. This kind of wheel was widely used in ancient Europe and Asia until the Middle Ages.
Iron wheel
Around 1000 BC, people began to use iron wheels. This kind of wheel is more durable than bronze wheel. The iron wheel is made by bending iron bars into a circle and then connecting them with rivets. This kind of wheel was widely used in the Middle Ages.
rubber tire
/kloc-At the beginning of the 9th century, British chemist Charles Gold invented rubber tires. This kind of tire can reduce the vibration and noise of the vehicle and improve the speed and comfort of the vehicle. Rubber tires are made by heating natural rubber and then mixing other chemicals. These rubber sheets are then bonded to the wheels to form tires.
Modern tire
At the beginning of the 20th century, people began to use steel wire and nylon to strengthen the tire structure. This kind of tire is more durable than rubber tire. The modern tire manufacturing method is to put rubber sheets and steel wires into a tire forming machine and process the tire at high temperature and high pressure.
final result
From ancient wooden wheels to modern rubber tires, the evolution of tires has gone through thousands of years. With the progress of science and technology and the improvement of materials, the quality and performance of tires are constantly improved, which brings more convenience and comfort to people's traffic. However, with the popularization of automobiles and the increase of traffic volume, the manufacture and use of tires are also facing more challenges and pressures. In the future, people need to constantly explore and innovate, and make more efforts and contributions to the sustainable development of tires and environmental protection.