Production Process

Wire Drawing:The process starts with wire drawing, where raw steel wire is pulled through a series of dies to reduce its diameter and improve its surface finish.

Coiling:The drawn wire is then fed into a coiling machine where it is wound into the desired spring shape. This process forms the basic structure of the coil spring.

Tempering:The coiled springs undergo a tempering process, which involves heating them to a specific temperature and then cooling them down slowly. Tempering enhances the spring's toughness and durability.

Quenching:Following tempering, the springs are quenched by rapidly cooling them. This step helps to further strengthen the springs and achieve the desired hardness.

 

Grinding:After quenching, the springs undergo grinding to remove any irregularities, surface imperfections, or excess material, ensuring a smooth and precise finish.

Testing:The springs are subjected to various tests, including tension and compression tests, to verify their mechanical properties and ensure they meet quality standards.

Polishing:Polishing is carried out to improve the surface finish of the coil springs, providing a visually appealing appearance and reducing the risk of corrosion.

Setting:Springs may undergo a setting process, where they are compressed or extended beyond their normal range to stabilize their dimensions and eliminate any residual stresses.

 

Powder Coating:The coil springs are coated with a layer of powder paint to enhance their corrosion resistance and provide a protective finish. This step also allows for customization in terms of color.

Packing:Finally, the finished coil springs are carefully packed, often according to customer specifications, and prepared for shipment to automotive manufacturers or other end-users.

These processes ensure that auto coil springs meet the required standards for performance, durability, and quality.