Cegedur Societe De Transformation De L'aluminium Pechiney

Aluminium Pechiney

Pechiney

Alliages Frittes Metafram

Cegedur Societe De Transformation De L'aluminim Pechiney

Jean Meunier

Noel Huret

Michel Eudier

Marc Salesse

Engine liners having a base of aluminum alloys and of silicon grains

This invention relates to a process for obtaining extruded semifinished products from high resistance aluminum alloy powder. It is characterized in that there is used particularly a powder of an aluminum-lithium alloy obtained by atomization in a neutral gas. This powder is loaded in a jacket of aluminum alloy of the 5000 type, then hot degassed under a pressure less than the atmospheric pressure; after sealing of the jacket, the unit is subjected to hot inverted extrusion and heat treated in the ambient air. The plated composite semifinished product thus obtained exhibits a very high resistance and finds its application particularly in the aeronautical industry.

Process for obtaining extruded semifinished products from high

The invention relates to cylinder liners for internal combustion engines comprising a matrix based on aluminum alloys of high mechanical strength, obtained by powder metallurgy, and methods of producing them. The liners comprise a dispersion of grains of an added intermetallic compound, apart from the dispersion of such intermetallic compounds as may exist in the alloy, the added compound having a melting temperature of over 700.degree. C. The liners are obtained by extruding or sintering a mixture of powders. The liners of the invention may be used particularly in the automobile industry and in any kind of industry where liner-piston units of good compatibility must be obtained from aluminum alloys.

Engine cylinder liners based on aluminum alloys and intermetallic

This invention relates to inserts for pistons of diesel engines of aluminum-silicon alloys obtained by powder metallurgy. These inserts are characterized in that they contain elements such as iron and zirconium. They find their application in the manufacture of pistons intended to work at high temperatures for long periods and exhibit a good friction capacity.

Inserts for pistons of diesel engines of aluminum-silicon alloys having

This invention relates to a process for sintering aluminum alloy powders under pressure.

Growing community of inventors

Grenoble, France

Jean Meunier