Double-shouldered welding device for the friction stir welding of parts, and welding method
US7931185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2008 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Sep 10, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/123
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a double shouldered welding device for the friction stir welding of parts, in which at least one shoulder has two concentric rings providing two plane concentric bearing surfaces, the rings being arranged so that the smaller-diameter ring is capable of compressing the stirred material of the parts to be welded during advance of the welding device and so that the larger-diameter ring is capable of forming a sink-in stop for the smaller-diameter ring. The invention also relates to a method of friction stir welding by means of the welding device according to the invention, in which said device is force-driven.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.