Direct chill casting of aluminum-lithium alloys
US4709740A · kind A · utility
24Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Apr 11, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/1245
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for continuously casting lithium-containing alloys by a direct chill process includes cooling the alloy to form a continuous ingot having a solid shell and further cooling the ingot by direct chill with an organic coolant. The organic coolant in one aspect includes a modified hydrocarbon fluid, e.g., ethylene glycol, having less than a predetermined moisture content. The method includes recirculating coolant while controlling moisture content. An ingot formed by the present invention provides small dendrite arm spacing in a relatively large size ingot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.