Method of repairing surface defects using metallic filler material
US4008844A · kind A · utility
61Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1975 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Jan 6, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/3033
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In filling voids in or between metallic articles, as in the repair of cracks or other surface defects in castings, the void is filled with a powder mix which upon heat treatment fills the void. The filler powder mix is a blend of at least two distinct powder components and in terms of overall composition preferably corresponds to that of article being repaired. The components comprising the mix are selected to provide a transient liquid phase and isothermal resolidification of a portion of the mix at the temperature below the article melting point. A subsequent heat treatment is preferably utilized for homogenization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.