When we manufacture springs, after the spring is formed, it generally needs to go through a low temperature of 220 to 330 degrees Celsius for stress relief annealing or quenching treatment. Sometimes, depending on the different working conditions of the spring and the properties of the material used to compress the spring, quenching and tempering treatment may be necessary to improve the spring force of the spring.

When heat treating compressed springs, the coil may shrink, and we should use fixtures to help shape it. When working, pay attention to firmly clamp the spring and shaft rod.

After the spring is formed, if it bends, you can choose to use a coil to perform multiple longitudinal frictions along the axis while the spring is tensioned. The force should be strong until the surface of the spring is locally hardened.

In addition, we also need to pay attention to some details, such as removing the edges and corners of the compression spring at both ends, as well as the burrs inside and outside the coil, in order to manufacture a qualified and beautiful compression spring.