| 摘要 |
Process for obtaining by moulding two-material components made up of two aluminium alloys one of which forms the core and the other the matrix. …<??>This process consists in using a core, optionally containing a refractory skeleton, in removing the natural layer of alumina present at the surface of the core, in immediately afterwards coating the unit thus obtained with a gas-impervious film of a metal such as nickel, in placing the coated unit in a mould which is filled with the matrix alloy in the molten state at a temperature such that at least 30% of the core is superficially remelted. …<??>It finds its application in the manufacture of motor vehicle components such as engine cylinder heads and the insertion of conduits into aeronautical components. …<IMAGE>… |
