EP 2285506 A1 20110223 - METHOD AND APPARATUS TO SUPPRESS VIBRATIONS IN A ROLLING MILL
Title (en)
METHOD AND APPARATUS TO SUPPRESS VIBRATIONS IN A ROLLING MILL
Title (de)
VERFAHREN UND VORRICHTUNG ZUR UNTERDRÜCKUNG VON SCHWINGUNGEN IN EINER WALZANLAGE
Title (fr)
PROCÉDÉ ET DISPOSITIF DE SUPPRESSION DES OSCILLATIONS DANS UN SYSTÈME DE LAMINAGE
Publication
Application
Priority
- EP 2009055526 W 20090507
- AT 9792008 A 20080618
Abstract (en)
[origin: WO2009153101A1] The present invention relates to a method and to an apparatus for suppression of vibrations in a rolling mill. The problem of the invention is to create a method and an apparatus having a hydraulic roller actuator for the suppression of vibrations in a rolling mill, with which in particular the third-octave vibrations can be effectively suppressed and thereby the quality of the rolled material and/or the productivity of the rolling mill can be improved. This problem is solved by a method in which the control variable is supplied to an electro-hydraulic actuating unit and then due to this actuating unit at least one hydraulic actuator for the roller setting is actuated, wherein the electro-hydraulic actuating unit has a nominal rate of flow = 50 l/min and at least a portion of the frequency response at frequencies f = 80 Hz is characterized by a drop in value of = 3 dB, and in this frequency range, the phase drop ? satisfies the conditions (I) and ? < 90°.
IPC 8 full level
B21B 37/00 (2006.01)
CPC (source: EP US)
B21B 37/007 (2013.01 - EP US)
Citation (search report)
See references of WO 2009153101A1
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
AT 506398 A4 20090915; AT 506398 B1 20090915; BR PI0915724 A2 20151027; BR PI0915724 B1 20200505; CN 102083560 A 20110601; CN 102083560 B 20140108; EP 2285506 A1 20110223; EP 2285506 B1 20130703; MX 2010013754 A 20110121; RU 2011101570 A 20120727; RU 2503512 C2 20140110; US 2011120202 A1 20110526; US 8695391 B2 20140415; WO 2009153101 A1 20091223
DOCDB simple family (application)
AT 9792008 A 20080618; BR PI0915724 A 20090507; CN 200980122983 A 20090507; EP 09765681 A 20090507; EP 2009055526 W 20090507; MX 2010013754 A 20090507; RU 2011101570 A 20090507; US 99936509 A 20090507