发明名称 |
Process for manufacturing thin-walled pipes |
摘要 |
PCT No. PCT/EP96/03778 Sec. 371 Date Feb. 27, 1998 Sec. 102(e) Date Feb. 27, 1998 PCT Filed Aug. 28, 1996 PCT Pub. No. WO97/09457 PCT Pub. Date Mar. 13, 1997A 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 or round bar. The thus obtained preform is severed and extruded 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.
|
申请公布号 |
US6086819(A) |
申请公布日期 |
2000.07.11 |
申请号 |
US19980029679 |
申请日期 |
1998.02.27 |
申请人 |
ERBSLOH AKTIENGESELLSCHAFT |
发明人 |
COMMANDEUR, BERNHARD;SCHATTEVOY, ROLF;HUMMERT, KLAUS;RINGHAND, DIRK |
分类号 |
B21C23/14;B21D53/84;B22D23/00;B22F3/115;C22C1/04;C22C21/02;C22F1/00;C22F1/043;C23C4/12;C23C26/00;(IPC1-7):B22F7/00 |
主分类号 |
B21C23/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|