Global Patent Index - EP 2026917 A1

EP 2026917 A1 2009-02-25 - 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

EP 2026917 A1 (EN)

Application

EP 06766322 A

Priority

IT 2006000438 W

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 (invention and additional information)

B21B 17/04 (2006.01)

CPC (invention and additional information)

B21B 17/04 (2013.01); B21B 27/024 (2013.01)

Citation (search report)

See references of WO 2007144905A1

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

EPO simple patent family

WO 2007144905 A1 20071221; WO 2007144905 A8 20080228; AR 061334 A1 20080820; AT 478741 T 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 2683 B1 20110622; US 2009090153 A1 20090409

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