Repair insert for repairing metallic structure
US8651393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2010 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Jul 7, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49728
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rail repair insert enables repair of rails and rail-like structures. A rail defect is initially identified and removed as contained within a volumetric material portion so as to form a contoured void while maintaining continuity of the rail opposite the void. A pre-formed insert is then placed into the void thereby effecting a rail-to-insert interface. Current is driven through the interface as force directs the insert against the rail. Resistance heat and pressure weld the insert to the rail. The flash welding aspects remove oxides and other impurities from the interface, and the forge welding aspects create a robust solid state weld. Excess material, whether flash, rail, or insert-based, is removed during the finishing processes to provide a virtually seamless rail repair. The solid state weld repair insert may be used to repair any number of targeted metallic rail-like structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.