Variable Diameter Investment Casting Mold For Casting of Reticulated Metal Foams
US-2017001238-A1 · Jan 5, 2017 · US
Dual investment technique for solid mold casting of reticulated metal foams
US9789536B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9789536-B2 |
| Application number | US-201514600717-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 20, 2015 |
| Priority date | Jan 20, 2015 |
| Publication date | Oct 17, 2017 |
| Grant date | Oct 17, 2017 |
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- Title
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed: 1. 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. 2. The method as recited in claim 1 , wherein the precursor is a reticulated foam. 3. The method as recited in claim 1 , wherein the precursor is a polyurethane foam. 4. The method as recited in claim 1 , wherein the precursor is completely encapsulated with the diluted pre-investment ceramic plaster. 5. The method as recited in claim 1 , further comprising, coating the precursor in a molten wax to increase ligament thickness. 6. The method as recited in claim 1 , further comprising, coating the precursor in a molten wax to increase ligament thickness to provide an about 90% air to 10% precursor ratio. 7. The method as recited in claim 1 , wherein the ceramic plaster is more rigid than the diluted pre-investment ceramic plaster. 8. The method as recited in claim 1 , wherein the ceramic plaster is about 28:100 water to powder ratio. 9. 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. 10. The method as recited in claim 9 , wherein the precursor is a reticulated foam. 11. The method as recited in claim 9 , further comprising, coating the precursor in the molten wax to increase ligament thickness to provide an about 90% air to 10% precursor ratio. 12. The method as recited in claim 9 , wherein the ceramic plaster is more rigid than the diluted pre-investment ceramic plaster. 13. The method as recited in claim 9 , wherein the ceramic plaster is about 28:100 water to powder ratio. 14. 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. 15. The dual investment solid mold as recited in claim 14 , wherein the precursor is reticulated foam. 16. The dual investment solid mold as recited in claim 14 , further comprising, a molten wax over the precursor to increase ligament thickness to provide an about 90% air to 10% precursor ratio. 17. The dual investment solid mold as recited in claim 14 , wherein the ceramic plaster is more rigid than the diluted pre-investment ceramic plaster. 18. The dual investment solid mold as recited in claim 14 , wherein the ceramic plaster is about 28:100 water to powder ratio.
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Classifications
Patterns made from expanded plastic materials · CPC title
Compositions of refractory mould or core materials; Grain structures thereof (refractory materials in general C04B35/00); Chemical or physical features in the formation or manufacture of moulds · CPC title
by abrasive, water or air blasting · CPC title
Lost patterns · CPC title
- B22C9/22Primary
Moulds for peculiarly-shaped castings · CPC title
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Frequently asked questions
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- What does patent US9789536B2 cover?
- 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.
- Who is the assignee on this patent?
- United Technologies Corp
- What technology area does this patent fall under?
- Primary CPC classification B22C9/22. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 17 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).