Mold and method for casting a single crystal metal article
US5062469A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Jun 22, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B11/002
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A mold is used to cast an article as a single crystal having selected primary and secondary orientations. The mold includes an article mold having a configuration corresponding to the configuration of the article to be cast. A starter section contains a starter cavity in which one or more crystals form. A seed crystal is disposed in the starter cavity. A crystal selector has a passage which extends between an upper end of the starter and a lower end of the article mold. To promote the growth in the crystal selector passage of a crystal having primary and secondary orientations corresponding to the selected primary and secondary orientations of the article, the longitudinal central axis of the crystal selector passage is disposed in a single plane which is parallel to a plane containing the selected primary orientation axis of the single crystal article and the selected secondary orientation axis of the single crystal article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.