EP 1814679 B1 20090218 - METHOD FOR PRODUCTION OF A SEAMLESS HOT-FINISHED STEEL TUBE
Title (en)
METHOD FOR PRODUCTION OF A SEAMLESS HOT-FINISHED STEEL TUBE
Title (de)
VERFAHREN ZUM HERSTELLEN EINES NAHTLOS WARMGEFERTIGTEN STAHLROHRES
Title (fr)
PROCEDE POUR PRODUIRE UN TUBE D'ACIER SANS SOUDURE USINE A CHAUD
Publication
Application
Priority
- DE 2005001944 W 20051025
- DE 102004052406 A 20041025
- DE 102005052178 A 20051024
Abstract (en)
[origin: US8166792B2] In a method of making a seamless hot-finished steel pipe a billet heated to a shaping temperature is pierced by a first shaping to a thick-walled hollow ingot which subsequently undergoes a radial forging process using an internal tool inserted in the hollow ingot and at least two forging jaws of a forging machine. The forging jaws act on the outer surface area of the hollow ingot, wherein the hollow ingot is turned and axially advanced in a clocked manner in the idle stroke phase of the forging jaws.
IPC 8 full level
B21J 7/14 (2006.01); B21B 23/00 (2006.01); B21J 5/00 (2006.01); B21J 5/10 (2006.01); B21J 13/10 (2006.01)
CPC (source: EP KR US)
B21B 15/0035 (2013.01 - KR); B21B 19/06 (2013.01 - KR); B21B 23/00 (2013.01 - EP KR US); B21B 45/00 (2013.01 - KR); B21J 5/10 (2013.01 - EP KR US); B21J 7/14 (2013.01 - EP KR US); B21B 15/0035 (2013.01 - EP US); B21B 19/04 (2013.01 - EP US); B21B 19/06 (2013.01 - EP US); B21B 45/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
HR YU
DOCDB simple family (publication)
US 2009044883 A1 20090219; US 8166792 B2 20120501; AT E422978 T1 20090315; AU 2005299151 A1 20060504; AU 2005299151 B2 20110825; BR PI0516769 A 20080923; BR PI0516769 A8 20161108; BR PI0516769 B1 20181030; CA 2584461 A1 20060504; CA 2584461 C 20130917; DE 102005052178 A1 20060427; DE 102005052178 B4 20080619; DE 502005006668 D1 20090402; EA 009851 B1 20080428; EA 200700945 A1 20071026; EP 1814679 A1 20070808; EP 1814679 B1 20090218; ES 2321121 T3 20090602; HR P20090227 T1 20090531; JP 2008517766 A 20080529; JP 4633122 B2 20110216; KR 20070084387 A 20070824; MX 2007004965 A 20070614; PL 1814679 T3 20090731; RS 50967 B 20101031; WO 2006045301 A1 20060504
DOCDB simple family (application)
US 57793505 A 20051025; AT 05803680 T 20051025; AU 2005299151 A 20051025; BR PI0516769 A 20051025; CA 2584461 A 20051025; DE 102005052178 A 20051024; DE 2005001944 W 20051025; DE 502005006668 T 20051025; EA 200700945 A 20051025; EP 05803680 A 20051025; ES 05803680 T 20051025; HR P20090227 T 20090420; JP 2007537112 A 20051025; KR 20077011412 A 20070518; MX 2007004965 A 20051025; PL 05803680 T 20051025; RS P20090228 A 20051025