Processes for continuously producing fine grained metal compositions and for semi-solid forming of shaped articles
US6500284B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1998 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Jun 10, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2003/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided a continuous casting and rolling process for continuously producing a deformed fine grain solid metal composition suitable for semi-solid forming. The process is characterized by high throughput, continuity, and precise control of the process parameters, such as solidification rate, rolling temperature and speed and total deformation. The solidification rate is preferred to be in a range of 10 to 150° C./s, and the total deformation is controlled to be larger than a Mises effective strain of 2.3 to obtain a deformed fine grain structure with enough distortion energy. A method combining the continuous casting and rolling process of preparing semi-solid raw material with semi-solid forming of shaped articles is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.