Casting systems and methods with auxiliary cooling onto a liquidus portion of a casting
US6427752B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Feb 3, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B9/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A casting system with auxiliary cooling onto a liquidus portion of the casting can produce a metal casting that comprises a fine-grain, homogeneous microstructure. The microstructure is essentially oxide- and sulfide-free, segregation defect free, and essentially free of voids caused by air entrapped during solidification of the metal from a liquidus state to a solid state. The casting system with auxiliary cooling onto a liquidus portion of the casting can comprises an electroslag refining system as a source of liquid metal; a nucleated casting system; and at least one cooling system that supplies coolant onto a liquidus portion of the casting. The liquidus portion of the casting is cooled in a manner sufficient to provide a casting microstructure that comprises a fine-grain, homogeneous microstructure that is essentially oxide- and sulfide-free, segregation defect free, and essentially free of voids caused by air entrapped during solidification from a liquidus state to a solid state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.