Title:
METHOD AND DEVICE FOR MOLDING METALLIC PIPE FOR HEAT EXCHANGER
Document Type and Number:
Japanese Patent JPS5626647
Kind Code:
A
Abstract:
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.
Inventors:
SHIYARURU PIEERU KORUGON
Application Number:
JP10300680A
Publication Date:
March 14, 1981
Filing Date:
July 25, 1980
Export Citation:
Assignee:
VALEO
International Classes:
B21D41/00; B21D53/08; B23P15/26; F28F1/02; B21D41/04; F28F9/16; (IPC1-7): B21D41/02; B21D53/08; F28F9/16
Domestic Patent References:
| JPS5013424A | 1975-02-12 | |||
| JPS51110752A | 1976-09-30 | |||
| JPS479091A | 1972-05-11 | |||
| JP53137514B |
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