Controlled pressure casting
US7806162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2006 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D29/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of forming metal castings includes positioning a first end of a structural member in a first mold cavity and a second end of the structural member in a second mold cavity. The first and second mold cavities are fluidly coupled to a reservoir of molten metal. A main pressure is applied to the molten metal in the reservoir to force the molten metal into the first and second mold cavities. First and second auxiliary pressures are applied to the first and second mold cavities to densify the castings formed in the first and second mold cavities. Another method for casting includes maintaining a main pressure at or less than an initial, mold-filling pressure after the first and second mold cavities have been filled. Additionally, a method for detecting whether a first mold cavity is sufficiently filled with molten metal includes monitoring a moveable element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.