Global Patent Index - EP 3600708 A1

EP 3600708 A1 20200205 - MILL STAND EQUIPPED WITH A DEVICE FOR CONTROLLING ROLLING STABILITY AND ASSOCIATED METHOD

Title (en)

MILL STAND EQUIPPED WITH A DEVICE FOR CONTROLLING ROLLING STABILITY AND ASSOCIATED METHOD

Title (de)

WALZGERÜST MIT EINER VORRICHTUNG ZUR STEUERUNG DER ROLLSTABILITÄT UND ZUGEHÖRIGES VERFAHREN

Title (fr)

CAGE DE LAMINOIR ÉQUIPÉE D'UN DISPOSITIF DE CONTRÔLE DE STABILITÉ DE LAMINAGE ET MÉTHODE ASSOCIÉE

Publication

EP 3600708 A1 20200205 (FR)

Application

EP 18714190 A 20180321

Priority

  • EP 17290048 A 20170331
  • EP 2018057085 W 20180321

Abstract (en)

[origin: WO2018177827A1] The present invention describes a mill stand provided with a pair of upper and lower working rolls (CTS, CTI), a pair of upper and lower intermediate rolls (CTS, CTI) and equipped with a device for controlling rolling stability by positioning the working rolls for the rolling of a moving metal product (PM) comprising: - said upper and lower working rolls (CTS, CTI) each acting on one of two faces of a metal product moving along a longitudinal axis (X), - longitudinal movement means (MDS1, MDS2, MDI1, MDI2) for moving said working rolls relative to a vertical axis (Z) that passes through at least one of the intermediate rolls transmitting a rolling force, by direct contact, onto at least one of the working rolls, the longitudinal axis (X) and the vertical axis (Z) defining an intersection at a point of origin (O) relative to which the working rolls are situated laterally at an offset distance; - measuring means (MMS1, MMS2, MMI1, MMI2) for measuring at least one measured parameter (P), said measured parameter being transmitted to a control unit (UC) supplying a control signal (Ssup1, Sinf1, Ssup2, Sinf2) to the longitudinal movement means, characterised in that: - the measured parameter is related to a discrepancy in the physical state of at least one of the working rolls relative to a previous physical state; - the measured parameter comprises at least one longitudinal component value of at least one of the forces (FSup, Finf) applied by each working roll to the active measuring means coupled to the movement means actually in contact with and under load with said working roll, - the upper and lower longitudinal movement means can be actuated individually in order to reposition the upper and lower working rolls according to individual offsets depending on the control signal.

IPC 8 full level

B21B 13/14 (2006.01)

CPC (source: EP)

B21B 13/145 (2013.01); B21B 2013/025 (2013.01); B21B 2013/028 (2013.01); B21B 2031/206 (2013.01)

Citation (search report)

See references of WO 2018177827A1

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)

EP 3381576 A1 20181003; CN 212143934 U 20201215; EP 3600708 A1 20200205; JP 3230298 U 20210121; KR 20190002909 U 20191126; WO 2018177827 A1 20181004

DOCDB simple family (application)

EP 17290048 A 20170331; CN 201890000687 U 20180321; EP 18714190 A 20180321; EP 2018057085 W 20180321; JP 2019600142 U 20180321; KR 20197000075 U 20180321