Metal working – Method of mechanical manufacture – Shaping mating parts for reassembly in different positions
Patent
1980-05-06
1981-11-03
Godici, Nicholas P.
Metal working
Method of mechanical manufacture
Shaping mating parts for reassembly in different positions
294205, B22F 324
Patent
active
042977770
ABSTRACT:
A method for the production of a composite hollow body formed of aluminum alloys and composed of two layers having differing structure. One layer of the hollow body is intended to operate in contact with a mobile surface and is produced by extruding a mixture of particles of a hypereutectic silicon alloy having fine grains and an addition product. The other layer is selected from among alloys having certain particular properties and has the structure of a cast and wrought product. The present method particularly consists of the step of joining the two layers by coextrusion on a mandrel in an inverse extrusion press. The composite hollow bodies so produced are used in the production of linings for internal combustion engines or for jacks.
REFERENCES:
patent: 3892030 (1975-07-01), De Pierre et al.
patent: 4099314 (1978-07-01), Perrot et al.
patent: 4135922 (1979-01-01), Cebulak
Kucza Jean-Claude
Mastrot Albert
Perrot Rene
Wattier Jean-Mary
Cegedur Societe de Transformation de l'Aluminium Pechiney
Godici Nicholas P.
Rising V. K.
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