发明名称 |
PROCESS FOR MANUFACTURING THIN PIPES |
摘要 |
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 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 |
WO9709457(A1) |
申请公布日期 |
1997.03.13 |
申请号 |
WO1996EP03778 |
申请日期 |
1996.08.28 |
申请人 |
PEAK WERKSTOFF GMBH;COMMANDEUR, BERNHARD;SCHATTEVOY, ROLF;HUMMERT, KLAUS;RINGHAND, DIRK |
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 |
主分类号 |
B21C23/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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