Process for the lost-foam casting, under controlled pressure, of metal articles
US5088544A · kind A · utility
8Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Oct 9, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D27/13
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improvement to the process for the lost-foam casting of metal articles. According to the process, the casting takes place under a controlled pressure which initially increases at a rate between 0.003 and 0.3 MPa for a first period of at most 5 seconds from the begining of the rise in pressure. The pressure then increases during a second period at a rate higher than the rate of increase during the first period, until the maximum desired pressure is attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.