EP 0133687 A2 19850306 - Method and apparatus for expanding heat exchanger tubes.
Title (en)
Method and apparatus for expanding heat exchanger tubes.
Title (de)
Verfahren und Vorrichtung zum Ausdehnen von Wärmetauscherrohren.
Title (fr)
Procédé et appareil pour évaser des tubes d'échangeurs de chaleur.
Publication
Application
Priority
JP 14399583 A 19830805
Abstract (en)
A heat exchanger tube is expanded externally, for instance for connecting it with a plate perimetrically of a hole in the plate through which it passes, by forcing through the bore of the tube a series of at least two expanders of progressively larger size. These expanders are secured on a tool steel rod so far apart from one another than before a trailing expander engages in the bore of the tube, the expander which led it has already emerged from the far end of the tube.
IPC 1-7
IPC 8 full level
B21D 39/08 (2006.01); B21D 53/08 (2006.01)
CPC (source: EP)
B21D 53/085 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0133687 A2 19850306; EP 0133687 A3 19860917; JP S6033837 A 19850221
DOCDB simple family (application)
EP 84109179 A 19840802; JP 14399583 A 19830805