Apparatus for and method of producing slurry material without stirring for application in semi-solid forming
US6742567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2001 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Aug 17, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S164/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing a semi-solid material without stirring, including heating a metal alloy to form a metallic melt, transferring a select amount of the melt into a vessel, nucleating the melt by regulating the transferring of the melt into the vessel, and crystallizing the melt within the vessel by cooling the melt at a controlled rate to produce a semi-solid material having a microstructure comprising rounded solid particles dispersed in a liquid metal matrix. In one form of the invention, a temperature-controlled shot sleeve is provided for receiving and cooling an amount of metallic melt at a controlled rate to produce the semi-solid material. The shot sleeve has a number of heat transfer zones adapted to independently control the temperature of the melt disposed adjacent various portions of the shot sleeve. The shot sleeve also includes a ram operable to discharge the semi-solid material directly into a die mold to form a near-net-shape part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.