EP 1184101 B1 20060705 - Method for forming metal tubular hollow items
Title (en)
Method for forming metal tubular hollow items
Title (de)
Verfahren zum Verformen von rohrförmigen Hohlkörpern aus Metall
Title (fr)
Procédé pour former des articles tubulaires creux métalliques
Publication
Application
Priority
DE 10042465 A 20000829
Abstract (en)
[origin: EP1184101A2] The hollow (10) is mechanically expanded and/or mechanically reduced in a first phase of treatment and is then annealed, repeating these two phases several times over, possibly annealing the body prior to the mechanical phase. Contraction or expansion should be performed at points showing the maximum change of section from original section after hydro-forming, and additional mechanical passes such as bending or forming should take place between the annealing and hydro-forming phases.
IPC 8 full level
B21D 26/033 (2011.01); B21D 41/00 (2006.01); B21D 41/02 (2006.01)
CPC (source: EP US)
B21D 26/033 (2013.01 - EP US); B21D 41/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1184101 A2 20020306; EP 1184101 A3 20021211; EP 1184101 B1 20060705; AT E332198 T1 20060715; DE 10042465 A1 20020328; DE 10042465 C2 20020801; DE 50110386 D1 20060817; DK 1184101 T3 20061023; ES 2267636 T3 20070316; US 2002073758 A1 20020620; US 6826943 B2 20041207
DOCDB simple family (application)
EP 01117698 A 20010725; AT 01117698 T 20010725; DE 10042465 A 20000829; DE 50110386 T 20010725; DK 01117698 T 20010725; ES 01117698 T 20010725; US 94226801 A 20010828