EP 2026917 A1 20090225 - RETAINED MANDREL ROLLING MILL FOR SEAMLESS TUBES
Title (en)
RETAINED MANDREL ROLLING MILL FOR SEAMLESS TUBES
Title (de)
WERK ZUM WALZEN MIT FESTGEHALTENEM DORN FÜR NAHTLOSE ROHRE
Title (fr)
LAMINOIR À MANDRIN RETENU POUR TUBES SANS SOUDURES
Publication
Application
Priority
IT 2006000438 W 20060612
Abstract (en)
[origin: WO2007144905A1] A rolling mill (10) for processing seamless tubes comprises a plurality of rolling units (U) that are sequentially arranged along a rolling axis (L), each of which is provided with at least three removable working rolls (12), which are each equipped with a groove (12a) for accommodating the tube to be worked the rolling mill comprises a mandrel suitable to be fitted in the tube cavity during the process; the tube is worked by being sequentially passed, with the mandrel (22) fitted in the tube cavity, within the grooves (12a) of the rolls (12) of the rolling units (U) such that the outer diameter of the tube (T) is reduced; in order to have low capital and production costs, each roll (12) of each rolling unit (U) has a fixed nominal diameter.
IPC 8 full level
B21B 17/04 (2006.01)
CPC (source: EP US)
B21B 17/04 (2013.01 - EP US); B21B 27/024 (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)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007144905 A1 20071221; WO 2007144905 A8 20080228; AR 061334 A1 20080820; AT E478741 T1 20100915; BR PI0621813 A2 20111220; CN 101460264 A 20090617; CN 101460264 B 20111221; DE 602006016499 D1 20101007; EA 014479 B1 20101230; EA 200802416 A1 20090630; EP 2026917 A1 20090225; EP 2026917 B1 20100825; MX 2008015709 A 20090325; SA 07280314 B1 20110622; US 2009090153 A1 20090409
DOCDB simple family (application)
IT 2006000438 W 20060612; AR P070102539 A 20070611; AT 06766322 T 20060612; BR PI0621813 A 20060612; CN 200680054938 A 20060612; DE 602006016499 T 20060612; EA 200802416 A 20060612; EP 06766322 A 20060612; MX 2008015709 A 20060612; SA 07280314 A 20070612; US 33288308 A 20081211