EP 1446245 B1 20060308 - METHOD AND DEVICE FOR RESHAPING TUBES
Title (en)
METHOD AND DEVICE FOR RESHAPING TUBES
Title (de)
VERFAHREN UND VORRICHTUNG ZUM UMFORMEN VON ROHREN
Title (fr)
PROCEDE ET DISPOSITIF POUR MODIFIER LA FORME DE TUBES
Publication
Application
Priority
- DE 0204310 W 20021119
- DE 10156978 A 20011121
- DE 10241641 A 20020905
Abstract (en)
[origin: US7251972B2] A method and an apparatus for reshaping a tube having an initial outside diameter, an initial wall thickness, and an initial length to form a tube have a reshaped outside diameter, a reshaped length, and a reshaped wall thickness, wherein at least one of the reshaped outside diameter, the reshaped length, and the reshaped wall thickness is different than a respective one of the initial outside diameter, the initial wall thickness, and the initial length. The method includes mounting the tube between two axially displaceable pressure rams with the ends of the tube against respective rams; applying an internal hydraulic pressure to the tube; applying an axial mechanical pressure to the tube via the rams; and simultaneously and uniformly cold-working the tube over its entire length by adjusting the internal hydraulic pressure and the axial mechanical pressure as a function of the reshaped outside diameter, the reshaped wall thickness, and the reshaped length.
IPC 8 full level
B21D 26/041 (2011.01); B21D 26/043 (2011.01)
CPC (source: EP US)
B21D 26/041 (2013.01 - EP US); B21D 26/043 (2013.01 - EP US); B21D 39/08 (2013.01 - EP US); Y10T 29/49805 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
US 2005000259 A1 20050106; US 7251972 B2 20070807; AT E319526 T1 20060315; AU 2002351694 A1 20030610; DE 50206047 D1 20060504; EP 1446245 A1 20040818; EP 1446245 B1 20060308; ES 2256572 T3 20060716; JP 2005510363 A 20050421; WO 03045604 A1 20030605
DOCDB simple family (application)
US 49624004 A 20040521; AT 02787390 T 20021119; AU 2002351694 A 20021119; DE 0204310 W 20021119; DE 50206047 T 20021119; EP 02787390 A 20021119; ES 02787390 T 20021119; JP 2003547094 A 20021119