发明名称 |
Herstellungsverfahren für ein Mehrschichtrohr zur Führung eines Wärmeübertragungsfluids und Mehrschichtrohr |
摘要 |
A first tube (24) is positioned with radial play within a second tube (18), and the tubes are connected via plastic forming of first and/or second tube. The second tube is positioned with radial play within a third tube (16), and connected by plastic forming of second and/or third tube. The forming force is applied to inner and/or the outer tube. All tubes have a circular cross section, and engage on each other or enclose a ring gap. - The outermost tube is placed in a mold, and the inner tube is expanded hydraulically or by a forming tool, until it forms a bond with a neighboring tube. The compound tube (10) has an inner/outer layer of a material with high heat conductivity, a material with high structural stability at relevant temperatures, and an anti-corrosion layer (22). |
申请公布号 |
DE502004004180(D1) |
申请公布日期 |
2007.08.09 |
申请号 |
DE20045004180T |
申请日期 |
2004.12.02 |
申请人 |
DEUTSCHES ZENTRUM FUER LUFT- UND RAUMFAHRT E.V. |
发明人 |
BUCK, REINER DR.;UHLIG, RALF |
分类号 |
B21C37/15;B21D26/02;B21D26/051 |
主分类号 |
B21C37/15 |
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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