Global Patent Index - EP 1013362 A1

EP 1013362 A1 2000-06-28 - Process and plant for continuous casting slabs

Title (en)

Process and plant for continuous casting slabs

Title (de)

Verfahren und Vorrichtung zum Stranggiessen von Brammen

Title (fr)

Procédé et installation de coulée en continu de brames

Publication

EP 1013362 A1 (DE)

Application

EP 99124440 A

Priority

  • DE 19859346 A
  • DE 19916190 A

Abstract (en)

A continuous slab casting process, comprising dynamic coolant distribution control in the secondary cooling zone in accordance with heat flux distribution in the primary cooling zone, is new. A continuous slab casting process comprises (a) determining the energy or temperature distribution over the mould width at a certain location in the mould to obtain a first actual value for a regulating circuit; (b) estimating the deviation of the actual value from a desired value of energy or temperature distribution symmetrical to the strand center axis; (c) regulating secondary cooling over the width and length of the strand withdrawal roller guide (4.2) in dependence on the deviation of the actual value from the desired value by individual control of the supplied coolant quantities; and (d) determining physical properties of the slab (14.1), divergence of the slab path (7.1) and/or the slab geometry in the secondary cooling zone as a second actual value for input into the regulating circuit. An Independent claim is also included for continuous slab casting equipment for carrying out the above process.

Abstract (de)

Um beim Stranggießen von Brammen eine Bramme zu erhalten, die nach ihrer Durcherstarrung eine zur Brammenlängsachse symmetrische Energie- bzw. Temperaturverteilung sowie Geometrie aufweist, wird vorgeschlagen, Abweichungen der Energie- bzw. Temperaturverteilungen von einem symmetrischen Energie- bzw. Temperatuverlauf am Kokillenaustritt in der Primärkühlzone zur Regelung der Kühlmitteleinrichtungen der Sekundärkühlzone zu nutzen. <IMAGE>

IPC 1-7 (main, further and additional classification)

B22D 11/22

IPC 8 full level (invention and additional information)

B22D 11/22 (2006.01)

CPC (invention and additional information)

B22D 11/22 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT DE ES FR GB IT NL

EPO simple patent family

EP 1013362 A1 20000628; EP 1013362 B1 20030625; AT 243589 T 20030715

INPADOC legal status


2006-08-23 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

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2004-07-09 [EN] FR: TRANSLATION NOT FILED

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2003-12-03 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20031106

2003-12-01 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2003-07-31 [REF] CORRESPONDS TO:

- Document: DE 59906084 P 20030731

2003-06-25 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT DE ES FR GB IT NL

2003-06-25 [REG GB FG4D] EUROPEAN PATENT GRANTED

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2003-06-25 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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