EP 0019569 B1 19821124 - HOLLOW COMPOSITE ARTICLE AND PROCESS FOR THE MANUFACTURE THEREOF
Title (en)
HOLLOW COMPOSITE ARTICLE AND PROCESS FOR THE MANUFACTURE THEREOF
Publication
Application
Priority
FR 7913289 A 19790516
Abstract (en)
[origin: US4297777A] 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.
IPC 1-7
IPC 8 full level
B21C 23/22 (2006.01); B22D 19/08 (2006.01); B22F 3/20 (2006.01); B21C 23/01 (2006.01); B22F 5/12 (2006.01); B22F 7/06 (2006.01); F02F 1/08 (2006.01)
CPC (source: EP US)
B22F 3/20 (2013.01 - EP US); B22F 7/062 (2013.01 - EP US); F02F 1/08 (2013.01 - EP US); B22F 2998/00 (2013.01 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
CH DE GB NL SE
DOCDB simple family (publication)
EP 0019569 A1 19801126; EP 0019569 B1 19821124; BE 883300 A 19801114; DE 3061141 D1 19821230; FR 2456783 A1 19801212; FR 2456783 B1 19840330; IT 1130416 B 19860611; IT 8021940 A0 19800509; JP S57112922 A 19820714; US 4297777 A 19811103
DOCDB simple family (application)
EP 80420061 A 19800514; BE 200616 A 19800514; DE 3061141 T 19800514; FR 7913289 A 19790516; IT 2194080 A 19800509; JP 6465080 A 19800515; US 14722880 A 19800506