Global Patent Index - EP 0625388 B1

EP 0625388 B1 2000-07-12 - Method for the controlled pre-rolling of thin slabs leaving a continuous casting plant, and relative device

Title (en)

Method for the controlled pre-rolling of thin slabs leaving a continuous casting plant, and relative device

Title (de)

Verfahren und Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbrammen

Title (fr)

Procédé et dispositif pour le prélaminage de brames minces sortant d'une installation de coulée continue

Publication

EP 0625388 B1 (EN)

Application

EP 94102876 A

Priority

IT UD930083 A

Abstract (en)

[origin: EP0625388A1] Method for the controlled pre-rolling of thin slabs (20) leaving a continuous casting plant, whereby the pre-rolling is carried out with a plurality of pairs of rolls (14-16) grouped together in one or more pre-rolling assemblies (10), the first of the pre-rolling assemblies (10) being positioned immediately downstream of foot rolls (12) of a mold (11), at least one displaceable roll (16) being included in the pairs of rolls (14-16), the pairs of rolls (14-16) being associated with pressure transducer means (18) and hydraulic capsule means (17), position transducer means (24) being included, the pressure transducer means (18) and position transducer means (24) can be associated with a data processing unit (21), at least the first of the pairs of rolls (14-16) processing a slab (20) which has just emerged from the mold (11) with a thin solidified skin. The method achieves a pre-rolling with a reduction of the thickness of the slab (20) leaving the last pair of pre-rolling rolls (14-16) by at least 10% so as to eliminate the liquid core and to bring into contact the zones in a two-phase condition in order that the central solidification structure be refined and the central separation be minimized. <IMAGE>

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

B22D 11/12; B22D 11/06; B22D 11/16

IPC 8 full level (invention and additional information)

B22D 11/06 (2006.01); B22D 11/12 (2006.01); B22D 11/16 (2006.01)

CPC (invention and additional information)

B22D 11/0602 (2013.01); B22D 11/0622 (2013.01); B22D 11/1206 (2013.01); B22D 11/16 (2013.01)

Designated contracting state (EPC)

AT BE DE DK ES FR GB IT NL PT SE

EPO simple patent family

EP 0625388 A1 19941123; EP 0625388 B1 20000712; AT 194527 T 20000715; BR 9401449 A 19941206; CA 2119987 A1 19941118; CA 2119987 C 19990330; CN 1043193 C 19990505; CN 1118719 A 19960320; DE 69425188 D1 20000817; DE 69425188 T2 20010322; DK 0625388 T3 20001030; ES 2147562 T3 20000916; IT 1262116 B 19960619; IT UD930083 A1 19941118; IT UD930083 D0 19930517; KR 100263779 B1 20000901; PT 625388 E 20001229; RU 2111083 C1 19980520; TW 276196 B 19960521

INPADOC legal status


2008-06-30 [PG25 PT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-03-31 [REG PT MF4A] REVOCATION OF NATIONAL PROTECTION

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2004-02-24 [REG SE ECNC] EUROPEAN PATENT HAS BEEN CANCELLED

2004-01-21 [27W] REVOKED

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2004-01-21 [GBPR] GB: PATENT REVOKED UNDER ART. 102 OF THE EP CONVENTION DESIGNATING THE UK AS CONTRACTING STATE

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2002-11-29 [REG PT MM4A] ANNULMENT/LAPSE DUE TO NON-PAYMENT OF FEES, SEARCHED AND EXAMINED PATENT

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- Effective date: 20020831

2002-08-31 [PG25 PT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-08-01 [NLR1] NL: OPPOSITION HAS BEEN FILED WITH THE EPO

- Opponent name: SMS DEMAG AG

2001-06-13 [26] OPPOSITION FILED

- Opponent name: SMS DEMAG AG

- Effective date: 20010411

2000-12-29 [REG PT SC4A] TRANSLATION IS AVAILABLE

- Free text: AVAILABILITY OF NATIONAL TRANSLATION

- Effective date: 20000929

2000-10-30 [REG DK T3] TRANSLATION OF EP PATENT

2000-09-16 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2147562 T3

2000-08-18 [ET] FR: TRANSLATION FILED

2000-08-17 [REF] CORRESPONDS TO:

- Document: DE 69425188 20000817

2000-08-10 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: STUDIO GLP S.R.L.

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT BE DE DK ES FR GB IT NL PT SE

2000-07-12 [REF] CORRESPONDS TO:

- Document: AT 194527 T 20000715

1999-09-22 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 6B 22D 11/12 A, 6B 22D 11/16 B, 6B 22D 11/06 B

1999-09-22 [RTI1] TITLE (CORRECTION)

- Free text: METHOD FOR THE CONTROLLED PRE-ROLLING OF THIN SLABS LEAVING A CONTINUOUS CASTING PLANT, AND RELATIVE DEVICE

1997-11-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19970930

1995-07-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19950426

1994-11-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE DK ES FR GB IT NL PT SE