Method of fabricating metal composite compact
US6488887B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2000 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Oct 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A first compact (11) is molded by injection according to the MIM method in which a molding material composed of a mixture of metal powder and a binder is injected into a die for molding, after which a second compact (12) is molded by injection in close contact with the joining surface (110) of the first compact (11) thereby to fabricate a metal composite compact (1). The second compact (12) is molded by injection by making it flow and fill a die (8) in such a manner as to obtain a flow component (R) in the direction parallel to the joining surface (110) of the first compact (11) on the same joining surface (110). In a method according to another embodiment, cavity surfaces (60, 61) formed on a reference die (50) and a first replacement die (51), respectively, are placed in opposed relation to each other thereby to form a first cavity (71), in which the first compact (11) is molded by injection. Then, while leaving the first compact (11) in the cavity surface (60) of the reference die (50), only the first replacement die (51) is replaced by a second replacement die (52) having a cavity surface (62) of a different shape thereby to form a second cavity (72), into which the second comp…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.