Innovative solutions brought by VAT welding bellows.
The main features of VAT welded bellows are high airtightness, cleanliness, and repeated lifespan. 1. We have sufficient experience in flexibly responding to customer requirements while proposing the best materials and shapes that are more in line with actual usage environments and conditions. 2. We have sufficient reliability based on continuous operation in a state where axial expansion and contraction movements are combined with movements in the axial perpendicular direction, as well as durability tests under differential pressure and heating environments. 3. We can also provide high purity products with extremely low particle generation, produced from manufacturing processes in ISO Class 5 clean environments.
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basic information
Stamping Optimized diaphragm stamping (simultaneous punching and embossing) supports the stable mass production of standard-sized welded bellows. Cleaning VAT offers a three-stage cleaning process tailored to individual requirements. Standard cleaning is performed in an ISO 8 environment. Purchased parts are rinsed with ultra-pure water after alkaline cleaning. The parts are then managed in a controlled environment for final assembly and packaging. In the high-purity cleaning line, additional processes such as UV-A and visual inspection are included alongside standard cleaning. In the highest purity cleaning line, cleaning and packaging are performed in a fully automated environment under ISO 5 conditions. Production VAT's automation processes are conducted in clean rooms under ISO 8 conditions. The advanced automation of laser welding machines is ideal for mass production. For the production of a variety of small sizes, manual production using micro-plasma devices or laser devices is most suitable. Quality Control To ensure high airtightness and durability, VAT conducts: - Leak tests on all units using helium mass spectrometry - Manufacturing in ISO 9001 certified factories.
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Applications/Examples of results
Vacuum Valve Inside the vacuum valve, the welded bellows are used as a feedthrough to separate the atmosphere in the valve opening and closing drive section. Coating The coatings used in the semiconductor and solar cell industries require high cleanliness, necessitating the most technologically advanced welded bellows. Research VAT's welded bellows are used in a wide variety of accelerators around the world. The wide range of sizes and materials of the welded bellows can accommodate any usage situation. VAT's flexibility, creativity, and technical know-how enable the provision of high added value. Medical Welded bellows are used as part of medical devices implanted in patients' bodies. They are also used in medical equipment such as CT scanners. To adapt to the materials required for medical devices, they are produced in various materials, including F67 (pure titanium) and SST316L. Automotive The damper capsule used in fuel injection systems suppresses pulsation in high-pressure pumps. This product, which applies welded bellows technology, is produced in millions of units annually through a fully automated system and is offered to the market.
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Company information
VAT is an innovation company that provides mission-critical solutions for cutting-edge research and development and manufacturing processes in fields requiring vacuum, such as semiconductor and display manufacturing, as well as solar panel research and development. Innovation and exceptional engineering drive VAT's technology solutions and services. The products and services offered by VAT are highly customized. This reflects VAT's strong commitment to providing uncompromising solutions to its customers. Since its founding in Switzerland, VAT has established a leading position in the world by developing and providing innovative solutions in vacuum valves and related technologies in the global market, including Japan, over the past 60 years.
