EP 0226025 A2 19870624 - Method and apparatus for producing finned tubes.
Title (en)
Method and apparatus for producing finned tubes.
Title (de)
Verfahren und Vorrichtung zur Herstellung von Rippenrohren.
Title (fr)
Procédé et appareil de fabrication de tubes à ailettes.
Publication
Application
Priority
IT 2279885 A 19851112
Abstract (en)
A method for producing finned tubes for heat exchangers starting from a cylindrical tube (l) which is cut along at least one helical cutting line by means of relative rotatory and linear traversing motions between the tube (l) and a cutting tool (3); a continuous shaving or rib is obtained which remains integral with the wall of the tube (l) and which is folded outwards to form a helical fin (ll) by means of the bending and folding action of the cutting tool (3) which is provided with a sliding surface (3c) for the rib, running tangentially to the fin (ll). The tube is suitably guided and supported close to the cutting area.
IPC 1-7
IPC 8 full level
B21C 37/20 (2006.01)
CPC (source: EP)
B21C 37/207 (2013.01)
Designated contracting state (EPC)
DE ES FR GB NL SE
DOCDB simple family (publication)
EP 0226025 A2 19870624; EP 0226025 A3 19880831; IT 1215315 B 19900131; IT 8522798 A0 19851112
DOCDB simple family (application)
EP 86115385 A 19861106; IT 2279885 A 19851112