Powder bed additive manufacturing method of fabricating a porous matrix
US11001002B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Aug 23, 2018 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Nov 9, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for the additive manufacturing of a closed-cell porous matrix is described herein. A powder-bed, additive manufacturing process is used to create a piece with partially-closed cavities filled with unfused powder. Vacuum, negative pressure, positive pressure, or solvent is used to evacuate the powder from the cavities. Finally, a fresh layer of powder is used to cover the opening of the cavity and the powder is fused on top to close the opening.
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