The service life of stainless steel bellows is very long, about 5-7 years. But many people will ask, is there any way to extend the service life of stainless steel bellows and make it longer?

Through the analysis of stainless steel bellows. The main factors affecting the service life of stainless steel bellows are the correct installation of stainless steel bellows, the control of the working environment and the manufacturing process.

1. Correct selection and installation of stainless steel bellows: whether the correct installation is directly related to the service life of the bellows. There are many products on the market. Make sure to use the same bellows instead of mixing them randomly.

2. Use environment: Try to avoid long-term contact and long-term direct contact, which may cause deformation of the bellows and affect its service life.

3. Usage skills: Do not use it under overload. The greater the load, the service life of the bellows will be shortened, and it must be used within the allowable range of the bellows and must not exceed its use range.

4. Learn to watch: look at the craftsmanship, choose high-quality bellows, and check for damage when buying.

In addition, sometimes it is not ruled out that products that fully meet the required standards may have some problems in actual use. Stainless steel bellows such as the National Compensation Joint were displaced before the end of the year. The out-of-plane instability is easy to close during the pressure test. The large diameter closed type has been fully compensated. The joint displacement of the working position of the bellows is prone to circumferential instability. The small diameter double rod type has been fully compensated. The compensation joint displacement condition of the column hinge joint is easy to be unstable. The large deformation of stainless steel bellows not only affects the stability, but also provides favorable environmental conditions for stress corrosion.

Stainless steel bellows compensators are widely used in many industries in addition to their good compensation capabilities. This is also the main reason for high reliability. Its reliability is ensured by design, manufacturing, installation, operation and management. Any drop in the control compensator will lead to life or even failure. Bellows are considered as design factors in three aspects: compressive strength, stability and fatigue performance.

The large deformation of the stainless steel bellows not only affects the stability. And it provides favorable environmental conditions for stress corrosion. The comprehensive stress compensation amount of bellows compensator fatigue life depends on its fatigue life. The higher the fatigue life, the smaller the single wave offset of the metal bellows. In order to reduce costs and improve single wave compensation, some manufacturers set the allowable fatigue life of the bellows compensator too low. This leads to a large meridian bending stress caused by the displacement of the bellows and a high comprehensive stress, which greatly reduces the compensation of the bellows. The stability of the equipment reduces the use time of the stainless steel bellows.