Common materials of tension spring

The common materials of tension spring are mainly carbon spring steel, which is relatively cheap, but the elastic limit is low; Low manganese spring steel has good strength and hardenability, but it is easy to crack after quenching; Silicon manganese spring steel has improved the elastic limit and good mechanical properties; Chromium-vanadium steel has good toughness and strength, and its price is also a little expensive.

The tension spring is generally of equal pitch, and the section is mostly circular. When the tension spring is not under pressure, there is no gap between each coil and each coil, and the connection is very compact. The application range of extension spring is very wide. In medical treatment, not only respiratory equipment, mobile equipment, motion control, but also some home care equipment are used. Mechanical and electronic protection hardware, actuators and hand tools, as well as some mechanical and switching equipment are used for extension spring.