Casting of metal objects
US5297611A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1993 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Sep 1, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D30/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The mould assembly comprises mould segments of generally non-thermally conductive material which define a mould cavity for receiving liquid metal through at least one in-gate. A thermal extraction member of a high thermally conductive material contacts a portion of the mould cavity through which heat can be extracted rapidly to establish positive thermal gradients in the casting and thereby promote directional solidification. The mould assembly is also provided with a seal to selectively isolate the mould assembly from the liquid metal source to allow the mould assembly to be removed from the casting station to the cooling station before any substantial solidification has occurred, providing a more efficient use of the casting station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.