Casting aluminum alloys with a mold header comprising delaminated vermiculite
US4773470A · kind A · utility
17Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Nov 19, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/059
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for continuous direct chill casting of aluminum alloys, particularly aluminum-lithium alloys. The molten alloy is cast in a mold containing a header comprising delaminated vermiculite or spodumene or lithium aluminate. The header preferably comprises delaminated vermiculite blended with wollastonite, lime, silica, and wood fiber. The mixture is slurried with water, molded into shape, compressed to expel water, steam cured, and dried. The header forms ingots of good quality and has excellent resistance to attack by molten aluminum-lithium alloys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.