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US 10,029,302 B2Granted
Dual investment shelled solid mold casting of reticulated metal foams
AssigneeUnited Technologies Corporation
InventorsRyan C. Breneman, Steven J. Bullied, David R. Scott
Life of this patent
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Abstract
A method to manufacture reticulated metal foam via a dual investment, includes pre-investment of a precursor with a diluted pre-investment ceramic plaster then applying an outer mold to the encapsulated precursor as a shell-mold.
Claims4
A method to manufacture reticulated metal foam via a dual investment, comprising:
- pre-investing a precursor with a pre-investment ceramic plaster to encapsulate the precursor;
- applying an outer mold to the encapsulated precursor as a shell-mold;
- coating the precursor in a molten wax to increase ligament thickness to provide an about 90% air to 10% precursor ratio;
- and
- wherein the pre-investment ceramic plaster is diluted more than about 39-42:100.
2 more elements
Dependencies are inferred from the claim text.