What is the production process of tire rubber?

The production process of tire rubber is a complex and delicate process, mainly including several key steps such as raw material preparation, mixing, extrusion, assembly, and vulcanization. The following is a detailed tire rubber production process:

1、 Raw material preparation

The main raw materials of tire rubber include natural rubber, synthetic rubber (such as styrene butadiene rubber, polybutadiene rubber, butyl rubber, etc.), chemical additives (such as carbon black, silicon, antioxidant, ozone inhibitor, anti-aging agent, etc.), fiber materials, steel wires, etc. The selection and ratio of these raw materials will be adjusted according to the specific purpose and performance requirements of the tire.

2、 Internal refining

Mixing is a crucial step in blending rubber, ingredients, and additives together. In the mixer, the rubber mixture is extruded and mixed under high temperature and pressure to ensure uniform dispersion of various components. During the mixing process, temperature control is crucial to avoid damaging additives or affecting the performance of the mixture. After the mixing is completed, the obtained rubber mixture will be transported to the subsequent process line.

3、 Squeeze out

Extrusion is an important step in processing rubber mixtures into various components of tires. During the extrusion process, the rubber mixture is fed into the extruder, and after heating, mixing, and pressurization, it is formed into the tread, sidewall, and other components of the tire at the head of the extruder. The temperature and speed parameters of the extruder need to be adjusted according to the performance of the rubber mixture and the required component size.

4、 Assembly

Assembly is the process of combining the various components of a tire together. This includes assembling components such as tire beads, belt layers, curtain layers, and airtight layers together in a specific order and manner. During the assembly process, it is necessary to ensure good adhesion and fit between various components to ensure the overall performance and safety of the tire.

5、 Sulfurization

Vulcanization is the final step in the tire manufacturing process and a crucial step in transforming the tire from a plastic state to an elastic state. During the vulcanization process, uncured tires are placed into molds and undergo chemical reactions under high temperature and pressure, connecting the sulfur bridges in the rubber mixture to form a stable elastic structure. During the vulcanization process, the patterns and identification text inside the mold will be imprinted onto the surface of the tire. After vulcanization, the tire needs to undergo testing and quality control to ensure that it meets relevant standards and requirements.

In summary, the production process of tire rubber is a complex and delicate process that requires strict control of parameters and quality in each link. Through advanced technology and equipment, high-performance, safe and reliable tire products can be produced.