Method of obtaining bimaterial parts by moulding
US5259437A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1991 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Jul 29, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D19/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The disclosure relates to a method of obtaining, by moulding, bimaterial parts formed by two aluminium alloys one of which constitutes the core and the other the matrix. The method consists in using a core, optionally containing a refractory skeleton, removing a natural coating of alumina present on the surface of the core and immediately afterwards coating the assembly thus obtained with a film impermeable to gas and consisting of a metal such as nickel, placing the coated assembly in a mould which is filled with the alloy of the matrix in the molten state at a temperature such that at least 30% of the core is superficially remelted. The method can be applied to the manufacture of motor vehicle parts such as engine cylinder heads and the insertion of ducts into aeronautical parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.