6.5 Technical requirements for cylindrical spiral springs

1. Springs made of cold drawn steel wire quenched in a lead bath and formed by cold rolling should generally undergo stress relieving tempering treatment. The specifications for stress relieving tempering treatment are shown in Table 12-15-5.
2. Springs formed by annealing or hot rolling (with large material diameter and thickness) should undergo quenching and tempering treatment. The specifications for quenching and tempering treatment of commonly used spring materials can be referred to Table 12-15-10.
3. The heat treatment method for manufacturing springs with stainless spring steel is described in Section 2.6 of Chapter 15.
4. Springs formed from copper alloy materials should be subjected to corresponding heat treatment or aging treatment according to different materials. The heat treatment specifications for copper alloy materials can be found in Section 2.7 of Chapter 15.
5. When the surface coating of the spring is zinc, chromium, and cadmium, hydrogen removal treatment should be carried out in a timely manner after electroplating. The method is to perform hydrogen removal treatment at a temperature of 180-200 ℃ for 6-24 hours.
6. It can be subjected to standing treatment, pressure treatment, heating and pressure treatment, or shot peening treatment as needed.