EP 2504112 A2 20121003 - A METHOD OF ROLLING RAILS AND APPARATUS FOR ROLLING RAILS
Title (en)
A METHOD OF ROLLING RAILS AND APPARATUS FOR ROLLING RAILS
Title (de)
VERFAHREN ZUM WALZEN VON SCHIENEN UND VORRICHTUNG ZUM WALZEN VON SCHIENEN
Title (fr)
PROCÉDÉ DE LAMINAGE DE RAILS ET DISPOSITIF DE LAMINAGE DE RAILS
Publication
Application
Priority
- EP 09014727 A 20091126
- EP 2010007102 W 20101124
- EP 10787018 A 20101124
Abstract (en)
[origin: WO2011063935A2] This invention relates to a method of rolling steel rails comprising : a method of rolling steel rails comprising: providing a rail blank (5), the blank comprising a foot portion (2), a head portion (3) and a web portion (4) connecting the foot portion to the head portion; finishing the rail blank to form a steel rail (6) in a multi-stand continuous tandem finishing mill comprising at least one horizontal stand (H) and at least five four-roll universal stands (U), wherein each universal stand (Ux) only contains flat vertical rolls for forming the lower foot portion (2a) and the head portion (3a) of the rail, and wherein each universal stand (Ux) contains two shaped horizontal rolls for forming the sides (6a, 6b) of the rail and particularly the web portion (4a, 4b) of the rail, wherein the rail blank is passed only once through said finishing mill, and wherein in at least one combination of two subsequent stands Ul and Ul+1 · the rail is worked on the foot and not on the head using the flat vertical rolls in Ul and wherein the rail is worked on the head and not on the foot using the flat vertical rolls in Ul+1; or · the rail is worked on the head and not on the foot using the flat vertical rolls in Ul and wherein the rail is worked on the foot and not on the head using the flat vertical rolls in Ul+1. The invention also relates to an apparatus for carrying out said method, and to a product produced therewith.
IPC 8 full level
B21B 1/085 (2006.01)
CPC (source: EP)
B21B 1/085 (2013.01); B21B 13/08 (2013.01)
Citation (search report)
See references of WO 2011063935A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2011063935 A2 20110603; WO 2011063935 A3 20111124; AP 2012006333 A0 20120630; EP 2504112 A2 20121003; RU 2012126553 A 20140110; UA 105251 C2 20140425; ZA 201203122 B 20130626
DOCDB simple family (application)
EP 2010007102 W 20101124; AP 2012006333 A 20101124; EP 10787018 A 20101124; RU 2012126553 A 20101124; UA A201206883 A 20101124; ZA 201203122 A 20120430