Control of oxide growth on molten aluminum during casting using a high moisture atmosphere
US7267158B2 · kind B2 · utility
4Cited by
15References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2003 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Feb 28, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing aluminum castings which includes the steps of casting a molten alloy, contacting the surface of the molten alloy with a humidified atmosphere and solidifying the alloy. The method is particularly suited for aluminum-magnesium alloys such as AA 5XXX and 7XXX series alloys. In addition to reducing the thickness of the surface oxide layer formed during casting, the method also provides improved surface quality of cast products and reduces subsequent remedial re-work or scalping. An improved aluminum-magnesium cast alloy product is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.