发明名称 |
PROCEDE DE REALISATION D'UN TUBE METALLIQUE ET D'UN ECHANGEUR DE CHALEUR ET LES PRODUITS OBTENUS |
摘要 |
A method for conforming to a circular cross-section the end of a metallic tube of oblong cross-section for a heat exchanger, comprising two steps, one during which the end of the tube is subjected to a radial compression, and the other during which a punch having a diameter equal to that desired for the inner surface of the tube end is forcibly driven into said end. |
申请公布号 |
RO81366(A) |
申请公布日期 |
1983.06.01 |
申请号 |
RO19800101806 |
申请日期 |
1980.07.25 |
申请人 |
VALEO SOCIETE ANONYME FRANCAISE,FR |
发明人 |
COLLGON,CHARLES P.,FR |
分类号 |
B21D41/04;B21D41/00;B21D53/08;B23P15/26;F28F1/02;F28F9/16 |
主分类号 |
B21D41/04 |
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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