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US 9,517,535 B2Granted
Method for repairing a piece
AssigneeGE Avio S.r.l.
InventorsGiovanni Paolo Zanon, Agostino Scialpi
Life of this patent
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Abstract
A material is deposited on the surface of a piece to be repaired, by means of two steps of electro-spark deposition alternated with an intermediate compaction step, which reduces the surface asperity of a layer of material deposited before another material is deposited; the compaction phase is defined by shot peening, performed by means of shots supported by at least one flexible element supported projecting from a rotating shaft.
Claims15
A method for repairing a piece, comprising the steps of:
- performing a first electro-spark deposition step so as to form a first layer of material on a surface to be repaired forming part of said piece;
- performing at least a second electro-spark deposition step so as to form a second layer of material on said first layer;
- performing an intermediate compaction step between said first and said at least second electro-spark deposition steps, so as to reduce surface asperities of the first layer of material before initiating the second deposition step;
- wherein said compaction step comprises the step of shot peening, performed by a plurality of shots supported by at least one flexible element, which extends radially with respect to an axis and the additional step of rotating the at least one flexible element about said axis thereby impacting the plurality of shots against the layer being compacted.
1 more element
A method for repairing a piece comprising the steps of:
- depositing by electro-spark deposition a first layer of material on a surface of a piece being repaired;
- depositing by electro-spark deposition a material so as to form a second layer of material on the first layer of material;
- performing an intermediate compaction step between the first and second material deposition steps so as to reduce surface asperities of the first layer of material before the second deposition step by rotating a plurality of confined shots against the deposited layer thereby permitting the depositing of a higher volume of material;
- and
- performing in an alternating manner the depositing by electro-spark deposition additional layers of material and the compacting of each of the additionally deposited layers of material to reduce surface asperities in each subsequently deposited layer prior to the next layer being deposited until a chosen deposited material thickness is achieved.
2 more elements
Dependencies are inferred from the claim text.