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The making of bolt
Source: | Author:Vickey | Published time: 2021-04-25 | 1168 Views | Share:
Bolts can come in a wide range of different sizes and shapes, but the basic production process generally remains the same. It starts with cold forging steel wire into the right shape, followed by heat treating to improve strength and surface treating to improve durability, before being packed for shipment. However, for more advanced bolt designs, the production process can expand by a number of additional steps.

As one of the leading suppliers of fasteners to the automotive industry, Our Harbin Rainbow Technology  is highly proficient in every step and facet of bolt production.
Cold forging starts with large steel wire rods, which are uncoiled and cut to length. The grade of steel is standardized across the industry, Using special tooling, the wire is then cold forged into the right shape. This is basically where the steel is molded, while at room temperature, by forcing it through a series of dies at high pressure. The tooling itself can be quite complex, containing up to 200 different parts with tolerances of hundredths of a millimeter. Once perfected, cold forging ensures bolts can be produced quickly, in large volumes, and with high uniformity.

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