Automotive and aerospace materials in a continuous, pressurized mold filling and casting machine
US6637497B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 8, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | May 8, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C31/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Mold filling and feeding device (400) and process including using refractory filter cloth (202) to seal a mold line (100), in continuous conveyance, to a multi-stage pressurized filling and feeding device. The mold line (100) consists of vertically parted or horizontally parted green sand molds (101), or an extruded bed of media carrying various types of molds, including green sand, nobake, lost foam, investment casting shells, etc. These molds are bottom or side filled while moving for increased production rates. Feeding under pressure, while moving, is a second operation that improves casting integrity. The process includes a new and more efficient method of treating iron with magnesium for compacted graphite or ductile iron. A stitch (242) of filter cloth (202) holds modifying alloy (630) to the molds (101). A vacuum and pressure controlled column (550) provides consistent flow to thin walled castings, and pressurized feeding for heavy castings. Radiant energy losses are contained in the automatic system. The process and several special purpose machine components make a unified system for hardening liquid (600) such as molten metal in casting of aluminum alloy wheels or other me…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.