Flange hole repair
US7802350B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2007 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Feb 19, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49737
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention is a method of repairing an aperture and adjacent defect in a part which is started by removing one or more defects adjacent an aperture in a base material. The material is removed to create a weld seam that extends past an area of high stress concentration on the aperture. An insert of material containing a profile that corresponds to the profile of the base material removed adjacent the aperture and a combination top and runoff plate that encompasses the insert of material are provided. The insert of material is tack welded to the combination plate to assure a gap of less than about 0.003 inches between the combination plate and the insert. A backing plate is inserted underneath the combination top and runoff plate and insert such that there remains an air space between the backing plate and the combination plate which prevents the combination plate from becoming fused to the backing plate during a welding process. The insert is welded to the base material, and the backing plate is removed. Excess material is removed from the insert to obtain an aperture containing a profile essentially the same as the profile of the aperture prior to initiating the repair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.