Casting mold composition with improved detectability for inclusions and method of casting
US9186719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2013 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jan 28, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00939
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A titanium-containing article casting mold composition includes calcium aluminate and an X-ray or Neutron-ray detectable element. A method for detecting sub-surface ceramic inclusions in a titanium or titanium alloy casting includes combining calcium aluminate, an element more radiographically dense than the calcium aluminate, and a liquid to form a slurry; forming a mold having the calcium aluminate and the radiographically dense element from the slurry; introducing a titanium aluminide-containing metal to the radiographically dense element-bearing mold; solidifying the titanium aluminide-containing metal to form an article in the mold; removing the solidified titanium aluminide-containing metal article from said mold; subjecting the solidified titanium aluminide-containing article to radiographic inspection to provide a radiograph; and examining the radiograph for the presence of the radiographically dense element on or in the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.