Process for direct chill casting of metals
US4157728A · kind A · utility
59Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1977 |
| Grant date | Jun 12, 1979 |
| Priority date | — |
| Expiry date | Jul 29, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/07
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A direct chill casting of metals, particularly hot top casting of aluminum and its alloy, is improved by applying a gas pressure to the metals from directly below the overhang of a feed reservoir for receiving a melt to be cast. The direct chill casting is further improved by supplying a lubricating oil from a slit for conveying the gas to the inner wall of the mold. By using the process and the apparatus according to the invention, ingots having excellent smooth surfaces and reduced segregation can be reliably produced with a reduction in the amount of the lubricating oil used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.