Method of obtaining bimaterial parts by moulding

Details Method of obtaining bimaterial parts by moulding Method of obtaining bimaterial parts by moulding

1991-07-29

1993-11-09

Rosenbaum, Mark

Metal founding

Process

Shaping liquid metal against a forming surface

164 98, B22D 1900

Patent

active

052594378

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.

REFERENCES:
patent: 3038248 (1962-06-01), Kremer
patent: 3720257 (1973-03-01), Beutler
patent: 3945423 (1976-03-01), Hannig
patent: 4102033 (1978-07-01), Emi
patent: 4643241 (1987-02-01), Yonekura
patent: 4687043 (1987-08-01), Weiss
patent: 4715178 (1987-12-01), Tsukuda
patent: 4997024 (1991-03-01), Cole

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