Author： FOSHAN BOWAH VACUUM EQUIPMENT CO.,LTD
Metal bellows components have a wide temperature range and are generally given before the design and manufacture of elastic components. Some special-purpose bellows pass through liquid oxygen (-196℃) or lower temperature liquid nitrogen in the inner cavity, and the pressure resistance is up to 25MPa. Large-scale corrugated expansion joints (nominal diameter sometimes exceeding lm) used for pipe network system connection require a pressure bearing of 4MPa, temperature resistance of 400°C, and a certain corrosion resistance stability. The temperature adaptability of the elastic element depends on the temperature resistance of the elastic material used. Therefore, according to the operating temperature range of the elastic element, the elastic material with appropriate temperature performance parameters can be selected to process and manufacture qualified bellows components.
Various expected load values act on metal bellows and other elastic elements, such as concentrated force F, pressure p, and moment M, etc. When metal bellows-like elastic elements are used, in addition to the given load value, the action direction and action position of the load must also be given. For pressure loads, also specify whether the elastic element is subjected to inner cavity pressure or outer cavity pressure.
The maximum load value or full-scale value that the metal bellows and other elastic components are allowed to use under normal working conditions. It is usually an expected design value or a revised design value after the actual testing of the product prototype.