Friction stir extrusion of nonweldable materials for downhole tools
US10695861B2 · kind B2 · utility
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37References
20Claims
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Key dates
| Filing date | Jul 9, 2015 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Nov 3, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A non-weldable workpiece may be affixed to a weldable workpiece by friction stirring the weldable workpiece to plasticize and extrude at least a portion thereof into a recess in the non-weldable workpiece. The weldable workpiece may then be welded to a body of a downhole tool to enable the welding of a non-weldable workpiece onto a body to increase the wear-resistance of the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.