Low-pressure moulding process and apparatus
US4252173A · kind A · utility
5Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1978 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Mar 8, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D27/13
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process and an apparatus for improving the operation for low pressure casting of components such as aluminum and magnesium alloys by controlling the pressure of the inert gas used to cause the metal to flow downwards into the injection tube after the casting of a component at a value higher than that prevailing in the interior of the furnace, the difference between the two pressures being adjustable to a constant value, and enabling two different rates of flow of the inert gas to be established.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.