Manufacture of casting cores
US7334625B2 · kind B2 · utility
17Cited by
14References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2005 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Oct 2, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C7/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for forming an investment casting core comprises cutting a patterned core precursor from refractory metal-based sheet. The cutting forms recast along the cuts. An oxide is grown on non-recast areas. The recast is substantially chemically removed but substantially leaving the oxide. The core precursor may then be shaped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.