Process of friction stir welding on tube end joints and a product produced thereby
US10247491B2 · kind B2 · utility
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40References
20Claims
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Assignee
Inventors
Key dates
| Filing date | Apr 21, 2017 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Apr 21, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49364
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A process of producing shell and tube heat exchangers where the ends of the tubes are secured to a tube sheet while reacting applied FSW forces without introducing a crevice or local deformation near the ends of the tubes. In particular, an interference fit is used to lock the ends of the tubes into the tube sheet without flaring or expanding the tube ends. A FSW process is then used to weld the ends of the tubes to the tube sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.