Search International and National Patent Collections

1. (WO1997009458) PROCESS FOR MANUFACTURING THIN PIPES

Pub. No.:    WO/1997/009458    International Application No.:    PCT/EP1996/003779
Publication Date: Mar 13, 1997 International Filing Date: Aug 28, 1996
IPC: C22C 1/04
C22F 1/043
C23C 4/12
C23C 26/00
Applicants: ERBSLÖH AKTIENGESELLSCHAFT
COMMANDEUR, Bernhard
SCHATTEVOY, Rolf
HUMMERT, Klaus
Inventors: COMMANDEUR, Bernhard
SCHATTEVOY, Rolf
HUMMERT, Klaus
Title: PROCESS FOR MANUFACTURING THIN PIPES
Abstract:
A process is disclosed for manufacturing thin-walled pipes made of a heat- and wear-resistant aluminium-based material. A billet or tube blank made of a hypereutectic AlSi material is produced, optionally overaged by an annealing process, then extruded into a thick-walled pipe. The thus produced pipe is hot shaped into a thin-walled pipe. This process is particularly suitable to manufacture light metal cylinder liners for internal combustion engines, since the thus manufactured cylinder liners have the required properties regarding wear-resistance, heat-resistance and lowered pollutant emissions.