Tool for friction stir welding
US6676004B1 · kind B1 · utility
32Cited by
23References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Mar 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49321
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A friction stir welding tool for welding high-strength materials with one or more of the following features: 1) a curved transition geometry structure at the shoulder face and probe interface; 2) a tool material selected on the basis of an ultimate tensile strength determined at or above the temperature of the tool processing temperature; 3) a compressive stress at the point of crack fatigue introduced by mechanical or chemical means; and 4) a threaded probe with a) a major to minor thread diameter ratio that increases toward the distal end of the probe and/or b) with a curved thread root.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.