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US 9,789,536 B2Granted
Dual investment technique for solid mold casting of reticulated metal foams
AssigneeUnited Technologies Corporation
InventorsRyan B. Noraas, Steven J. Bullied, Mark F. Bartholomew
Life of this patent
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Abstract
A method to manufacture reticulated metal foam via a dual investment solid mold, includes pre-investment of a precursor with a diluted pre-investment ceramic plaster then investing the encapsulated precursor with a ceramic plaster.
Claims18
A method to manufacture reticulated metal foam via a dual investment solid mold, comprising:
- pre-investing a precursor with a diluted pre-investment ceramic plaster to encapsulate the precursor, wherein the diluted pre-investment ceramic plaster is about 55:100 water to powder ratio;
- and
- investing the encapsulated precursor with a ceramic plaster.
A method to manufacture reticulated metal foam via a dual investment solid mold, comprising:
- coating a precursor in a molten wax to increase ligament thickness;
- pre-investing the waxed precursor with a diluted pre-investment ceramic plaster to encapsulate the precursor, wherein the diluted pre-investment ceramic plaster is about 55:100 water to powder ratio;
- and
- investing the encapsulated precursor with a ceramic plaster.
1 more element
A dual investment solid mold, comprising:
- a precursor;
- a diluted pre-investment ceramic plaster over the precursor, wherein the diluted pre-investment ceramic plaster is about 55:100 water to powder ratio;
- and
- a ceramic plaster over the diluted pre-investment ceramic plaster.
1 more element
Dependencies are inferred from the claim text.