Method of friction stir welding and multi-section faced shoulderless retractable variable penetration friction stir welding tool for same
US7416102B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2005 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Jul 6, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/1265
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of friction stir welding and a non-consumable multi-section faced retractable shoulderless variable penetration friction stir welding tool. The tool includes a substantially cylindrical body portion, a head portion, and a tip section, each integral to the tool. The body portion has a longitudinal axis about which it is rotable, a diameter, a sidewall substantially parallel to the longitudinal axis, a proximal end, and a distal end. The head portion is located at the distal end of the body portion. The head portion includes a multi-section face, having a first face section and a second face section, that converges to the tip section. The tool is retractable, reduces overheating, improves weld quality by reducing internal voids and lack of fusion, and facilitates variable penetration welds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.