Investment casting refractory material
US9539637B2 · kind B2 · utility
1Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2013 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jan 7, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An investment casting method involves producing a casting shell by applying a hardenable refractory material to a sacrificial pattern. The casting shell having a plurality of phosphate bonds in the hardenable refractory material, which provide increased structural integrity during casting and improved frangibility during shell removal. The casting shell may also have a plurality of gaseous pockets suspended in the refractory material, which do not degrade the structural integrity during casting and provide improved frangibility during shell removal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.