Sequential casting of metals having similar freezing ranges
US8096344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Feb 8, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D9/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus are disclosed for sequentially direct chill casting a composite ingot made of metals having similar freezing ranges. Poor adhesion between the layers and low reliability of casting are addressed by adjusting the position of secondary cooling (created by applying water streams to the emerging ingot) relative to the upper surfaces of the molten metal pools compared to the conventional positions of first application of the secondary cooling. This can be achieved by moving one or more walls of the mold (when the secondary cooling emanates from the bottom of such walls), or adjusting the height of the molten metal pools within the mold and moving cooled divider walls between the pools. The relative temperatures and conditions of the metals at positions where they meet at the metal interface may therefore be optimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.