D28 Edge Welded Vacuum Bellows

As a flexible connection and compensation component specially designed for vacuum environments, the D28 Edge Welded Vacuum Bellows is widely used in high-end industry, scientific research experiments, aerospace and other fields with strict requirements on vacuum degree and reliability

Description

D28 Edge Welded Vacuum Bellows

edge welded vacuum bellows

I. Core Application Scenarios

As a flexible connection and compensation component specially designed for vacuum environments, the D28 Edge Welded Vacuum Bellows is widely used in high-end industry, scientific research experiments, aerospace and other fields with strict requirements on vacuum degree and reliability, relying on its precise dimension control, excellent sealing performance and multi-directional flexibility. The specific scenarios are as follows:

（I）Vacuum Equipment and System Field

This is the core application scenario of the D28 edge welded vacuum bellows, which is suitable for pipeline connection and working condition compensation of various high-vacuum and ultra-high-vacuum equipment. For example, the pipeline connection of vacuum coating machines, vacuum drying ovens, vacuum distillation equipment and vacuum coating equipment can effectively absorb axial, lateral and angular displacements during equipment operation, while maintaining an extremely low leak rate of the system (usually ≤1×10⁻⁹ mbar·l/s) to ensure the stability of the vacuum environment. In addition, in the connection between vacuum pumps and measuring instruments, as well as vacuum valves and chambers, it can also play a role in vibration isolation, reducing the impact of equipment vibration on the accuracy of the vacuum system and avoiding seal failure caused by vibration.

（II）Semiconductor and Electronic Industry Field

Semiconductor chip production, electronic component manufacturing and other scenarios have extremely high requirements on environmental cleanliness, vacuum tightness and displacement compensation accuracy, and the D28 edge welded vacuum bellows can perfectly meet such needs. In photoresist transportation, special gas transmission, wafer processing equipment (such as wafer handling robots, pedestal lift components), its all-metal welded structure has no easily worn or polluting components such as elastomers or O-rings, which can avoid impurity release and pollute the process environment. At the same time, through precise expansion and contraction and angle adjustment, it meets the requirements of precise positioning and operational stability of the equipment. In addition, it can also achieve reliable flexible sealing and displacement compensation in the vacuum chamber connection and beamline components of semiconductor testing equipment.

（III）Aerospace and National Defense Scientific Research Field

The extreme working conditions of aerospace equipment (such as high-altitude and high-vacuum, alternating high and low temperatures, strong vibration) put forward strict requirements on the environmental resistance and reliability of bellows. The D28 edge welded vacuum bellows can be used in satellite vacuum chambers, vacuum pipelines of rocket propulsion systems, pressure compensation components of aviation instruments, etc. Its excellent high and low temperature resistance (usually suitable for -250℃ to 450℃, depending on the material) and anti-fatigue life can ensure long-term stable operation in extreme environments. In the field of national defense scientific research, such as the pipeline systems of particle accelerators and high-vacuum laboratories, it can realize reliable connection and displacement compensation in ultra-high vacuum environments, ensuring the accuracy of experimental data.

（IV）Medical and Biomedical Field

Medical equipment (such as vacuum freeze dryers, medical vacuum systems, cardiovascular monitoring equipment) and biomedical experimental equipment (such as vacuum distillation, sample preparation devices) have strict requirements on hygiene, tightness and stability. The D28 edge welded vacuum bellows is made of corrosion-resistant and easy-to-clean metal materials such as 316L stainless steel. The welded structure has no dead corners for hygiene, which can avoid bacterial growth or medium residue. At the same time, the extremely low leak rate can ensure the reliability of medical processes and experimental processes. In the connection of medical vacuum valves and drug delivery equipment, it can also absorb equipment operation displacement through flexible compensation and reduce the impact of vibration on equipment accuracy.

（V）Petrochemical and Precision Instrument Field

In the low-temperature, high-pressure, corrosive medium vacuum processing systems of the petrochemical industry, the D28 edge welded vacuum bellows can be used as a flexible component of actuators, connectors and sensors. Its corrosion-resistant materials (such as customized options like Hastelloy and Inconel alloys) can resist the erosion of corrosive media such as acids and alkalis, and the high strength of the welded structure can withstand high-pressure fluctuations. In precision measuring instruments (such as pressure sensors, gyroscopes), it can be used as a volume compensation component or a sealed isolation component. With precise spring rate and displacement control, it ensures the measurement accuracy and stability of the instrument.