Composite, internal reinforced ceramic cores and related methods
US5947181A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1996 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jul 10, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/131
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of improving structural stability of a ceramic core used in the casting of turbine components includes the steps of a) providing a die having a predetermined geometry which gives the ceramic core a shape corresponding to interior spaces in the turbine component; b) inserting elongated strengthening members into interior or more areas of the die corresponding to one or more of the interior spaces; c) injecting a ceramic slurry into the die so as to substantially enclose the strengthening members; and d) firing the ceramic slurry to form a hardened ceramic core. A ceramic core used in a high temperature gas turbine component casting process includes a ceramic body having a geometry corresponding to internal passages of a gas turbine component; and at least one elongated rod or tube incorporated in the ceramic body, the rod or tube comprised of a material which retains structural stability at temperatures in excess of about 2600.degree. F. In a method of casting a gas turbine component having interior passages, and including inserting a ceramic core in a casting die wherein the ceramic core is shaped to correspond to the interior passages, pouring molten metal into the die, a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.