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US 9,789,534 B2Granted
Investment technique for solid mold casting of reticulated metal foams
AssigneeUnited Technologies Corporation
InventorsRyan B Noraas, Steven J Bullied, Mark F Bartholomew, John F Blondin, John Joseph Marcin
Life of this patent
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Abstract
A method to manufacture reticulated metal foam includes coating a precursor in a molten wax to increase ligament thickness; and investment coating the molten wax coated precursor with a ceramic plaster.
Claims16
A method to manufacture reticulated metal foam, comprising:
- coating a precursor in a molten wax to increase ligament thickness;
- coating the molten wax coated precursor with a ceramic plaster;
- and
- coating the precursor in the molten wax to increase ligament thickness to provide an about 90% air to 10% precursor ratio.
1 more element
A method to manufacture reticulated metal foam, comprising:
- coating a precursor in a molten wax to increase ligament thickness;
- coating the molten wax coated precursor with a ceramic plaster;
- and
- coating the precursor in the molten wax via a CNC machine to evenly form the wax coating precursor.
1 more element
A method to manufacture reticulated metal foam, comprising:
- coating a precursor in a molten wax to increase ligament thickness;
- coating the molten wax coated precursor with a ceramic plaster;
- attaching a wax gating to the coated precursor;
- forming a container to support the wax gating and the coated precursor attached thereto;
- and
- assembling an outer mold assembly to support therein the wax gating and the coated precursor attached thereto.
3 more elements
A method to manufacture reticulated metal foam, comprising:
- coating a precursor in a molten wax to increase ligament thickness;
- coating the molten wax coated precursor with a ceramic plaster;
- allowing the ceramic plaster to set up and dry to form a final mold;
- pre-heating the final mold for receipt of a molten metal into a pour cone of the final mold;
- pressurizing the final mold until the molten metal exits the final mold via a vent;
- and
- removing the reticulated metal foam via a citric-based solution that operates to dissolve the ceramic plaster.
4 more elements
A method to manufacture reticulated metal foam, comprising:
- coating a precursor in a molten wax to increase ligament thickness;
- coating the molten wax coated precursor with a ceramic plaster;
- allowing the ceramic plaster to set up and dry to form a final mold;
- and
- removing the reticulated metal foam via a citric-based solution that operates to dissolve the ceramic plaster of the final mold.
2 more elements
Dependencies are inferred from the claim text.