Unidirectionally solidified article, turbine rotor blade and unidirectionally solidified article repair method
US11131198B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Nov 12, 2019 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Feb 25, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/608
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A unidirectionally solidified article repair method according to one embodiment includes a step of forming a groove part overlapping only on one of a plurality of crystal grain boundaries in a base material made of a unidirectionally solidified alloy in which the plurality of crystal grain boundaries are aligned in one direction, and a step of forming a welded part having a metal composition similar to that of the base material by a metal used in welding with the base material in the groove part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.