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The Molding Process and Requirements of All-steel Radial Tires

The processing accuracy of all-steel radial tires is very high. In order to ensure the accurate positioning of each component during the forming operation and the belt layer to basically maintain the design dimensions of the finished all-steel radial tire, the all-steel radial tire must use specialized high-precision molding equipment and processes.

Ⅰ. The molding process of all-steel radial tires

The sidewall, inner liner, steel wire splint covering, cushion rubber, bead, belt and tread that meet the design size standards are accurately and symmetrically combined into a single unit according to the processing order and positioning requirements of the components. The processing process of the vulcanized tire blank is called the forming process of the all-steel radial tire.

The forming process is an extremely important key process in the entire manufacturing process of all-steel radial tires. The quality of the forming process is extremely obviously related to the internal and external quality and use quality of the finished product.

To achieve the quality requirements of uniformity and compactness of all-steel radial tires, some requirements must be paid attention to in the molding process.

Ⅱ. Requirements for the building process of all-steel radial tires

1. The accuracy of the forming machine;

2. Setting and stability of the process parameters of the molding machine;

3. The quality of semi-finished parts;

4. The operating technical level of the forming process;

5. The temperature and humidity environment of the molding area.

There are two molding methods for all-steel radial tires, namely, one-shot molding and two-shot molding. At present, tire manufacturers adopt either one-shot molding or two-shot molding in the molding process of radial truck tires or car radial tires.