EP0344095B1 - Procédé de laminage direct continu - Google Patents

Procédé de laminage direct continu Download PDF

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Publication number
EP0344095B1
EP0344095B1 EP89730119A EP89730119A EP0344095B1 EP 0344095 B1 EP0344095 B1 EP 0344095B1 EP 89730119 A EP89730119 A EP 89730119A EP 89730119 A EP89730119 A EP 89730119A EP 0344095 B1 EP0344095 B1 EP 0344095B1
Authority
EP
European Patent Office
Prior art keywords
thickness
flat product
flat
continuous casting
produced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89730119A
Other languages
German (de)
English (en)
Other versions
EP0344095B2 (fr
EP0344095A3 (fr
EP0344095A2 (fr
Inventor
Fritz-Peter Dr. Pleschiutschnigg
Lothar Parschat
Armin Burau
Werner Dr. Rahmfeld
Gerd Möllers
Hans-Jürgen Ehrenberg
Hans Georg Eberhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6355277&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0344095(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to AT89730119T priority Critical patent/ATE92797T1/de
Publication of EP0344095A2 publication Critical patent/EP0344095A2/fr
Publication of EP0344095A3 publication Critical patent/EP0344095A3/fr
Publication of EP0344095B1 publication Critical patent/EP0344095B1/fr
Application granted granted Critical
Publication of EP0344095B2 publication Critical patent/EP0344095B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands

Definitions

  • the invention relates to a method for the continuous casting-rolling of flat metal products, in particular of steel, according to the preamble of claim 1.
  • Flat products are the starting material for the production of sheets or strips.
  • Flat products of this type are also referred to as slabs or thin slabs. If slabs with a size exceeding a certain thickness are produced, segregation problems generally occur.
  • DE-OS 24 44 443 which is to be found, for example, as a description of the closest prior art, segregation in the case of such products is to be prevented by deformation in the continuous casting installation on the strand within the solidification section, as shortly before the solidification point as possible is exercised with a degree of reduction of 0.1 to 2%.
  • EP 0286862 A 1 a plant for producing a steel strip is known, the strand emerging from the continuous casting plant, which has already been reduced in thickness by being compressed, being rolled out into the actual strip in a subsequent rolling stand.
  • the invention is based on the object of specifying a method with which a product with a high proportion of roll structure is already made available with the continuous casting installation and which is capable of being coiled with the thickness dimension leaving the casting installation.
  • the object according to the invention is thereby achieved solved that the flat product produced in the continuous casting mold with a thickness of 50 to 100 mm cooled exclusively by internally cooled rollers and by means of the pairs of rollers the deformation in the solidified area at temperatures of the flat product just below the solidus temperature, in particular in the temperature range of 1500 - 1200 ° C becomes.
  • the thickness reduction of the flat product in the area of the solidification section and in the solidified area is coordinated with one another in such a way that the total reduction of the flat product is at least 60%.
  • the flat product thus produced is at a thickness of max. 35 mm coil capable, so that in a further embodiment of the invention, the flat product obtained is coiled after the casting-rolling process.
  • the flat product emerging from the mold by an atmosphere which prevents scaling of the flat product.
  • the atmosphere should be maintained over the entire area of the deformation path. This can be done in particular by maintaining an inert gas atmosphere within the strand guide section. If this is not possible for operational reasons, descaling the flat product within the deformation section is an equivalent measure.
  • the formation of the desired fine-grained structure can be supported in that the flat product leaving the mold is cooled exclusively by means of internally cooled rollers.
  • the rollers can be surface-coated in order to reduce the cooling effect caused by the rollers.
  • the temperature range of 1500 - 1200 ° C for further reduction has proven to be particularly favorable for maintaining an isotropic structure.
  • a continuous caster-type caster steel is poured into a mold with a cross-sectional dimension of 60 mm x 1200 mm.
  • the strand which partially solidifies over the cross section, is drawn off from the mold at a speed of approx. 3.5 m / min and guided by means of pairs of rollers.
  • the pairs of rollers can be adjusted individually or combined into segments against the strand and are pressed against the strand in such a way that in the area of the solidification section, i.e. from the end of the mold to solidification, the strand has a thickness of 36 mm (approx. 40% of the dimension at the mold exit) ) is reduced.
  • This area is followed by another area with pairs of rolls, in which a further reduction in thickness from 36 to 25 mm (30% from the already reduced strand thickness) is carried out.
  • a further reduction in thickness from 36 to 25 mm (30% from the already reduced strand thickness) is carried out.
  • the deformation in the area of the solidification section as well as after solidification can take place with one or more pairs of rollers.
  • the flat product produced in this way can then be wound up into the coil or fed directly to further processing by rolling.
  • a flat product is produced by the described method of operation, which already has a fine-grained structure corresponding to a rolled product when it leaves the continuous casting installation. Such a material can be coiled without difficulty. It has also surprisingly been found that the strength properties and toughness values of a flat product produced by the process according to the invention correspond to the properties of a rolled product even at these low degrees of deformation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Mold Materials And Core Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Claims (8)

1. Procédé pour le laminage de coulée continue d'éléments plats métalliques, en particulier en acier, par introduction d'un bain de fusion dans une coquille de coulée continue, dans laquelle l'élément plat est produit avec une épaisseur inférieure à 100 mm, par extraction au moyen de paires de rouleaux de la barre de coulée en partie solidifiée sur la section transversale de coulée, et par réduction de l'épaisseur de l'élément plat dans l'étendue de solidification d'au moins 10 % à 70 % de son épaisseur, et par déformation de l'élément plat solidifié avec une réduction supplémentaire de l'épaisseur d'au moins 30 %,
caractérisé en ce que l'élément plat, produit dans la coquille de coulée continue, avec une épaisseur de 50 à 100 mm, est exclusivement refroidi par des rouleaux refroidis intérieurement et, au moyen des paires de rouleaux, la déformation dans la zone solidifiée est effectuée pour des températures de l'élément plat juste au-dessous de la température de solidus, en particulier dans la plage de températures de 1500-1200 ° C.
2. Procédé selon la revendication 1,
caractérisé en ce que la réduction totale de l'épaisseur est réglée, de sorte qu'on obtient un élément plat avec une épaisseur de 35 mm au maximum.
3. Procédé selon la revendication 1,
caractérisé en ce que, après avoir quitté les paires de rouleaux, l'élément plat produit est bobiné.
4. Procédé selon la revendication 1,
caractérisé en ce que la réduction totale de l'épaisseur s'élève à au moins 60 %.
5. Procédé selon la revendication 1,
caractérisé en ce que l'élément plat, sortant de la coquille, est guidé, jusqu'à la fin de l'étendue de déformation, dans une atmosphère soumise à une oxydation.
6. Procédé selon la revendication 5,
caractérisé en ce que l'élément plat est guidé sous une atmosphère de gaz inerte.
7. Procédé selon la revendication 1,
caractérisé en ce que l'élément plat est désoxydé pendant la déformation.
8. Procédé selon la revendication 1,
caractérisé en ce que l'élément plat est refroidi par des rouleaux à revêtement de surface.
EP89730119A 1988-05-25 1989-05-11 Procédé de laminage direct continu Expired - Lifetime EP0344095B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89730119T ATE92797T1 (de) 1988-05-25 1989-05-11 Verfahren zum kontinuierlichen giesswalzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3818077A DE3818077A1 (de) 1988-05-25 1988-05-25 Verfahren zum kontinuierlichen giesswalzen
DE3818077 1988-05-25

Publications (4)

Publication Number Publication Date
EP0344095A2 EP0344095A2 (fr) 1989-11-29
EP0344095A3 EP0344095A3 (fr) 1991-03-06
EP0344095B1 true EP0344095B1 (fr) 1993-08-11
EP0344095B2 EP0344095B2 (fr) 2000-03-22

Family

ID=6355277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89730119A Expired - Lifetime EP0344095B2 (fr) 1988-05-25 1989-05-11 Procédé de laminage direct continu

Country Status (9)

Country Link
US (1) US4976306A (fr)
EP (1) EP0344095B2 (fr)
JP (1) JP3065321B2 (fr)
CN (1) CN1018157B (fr)
AT (1) ATE92797T1 (fr)
BR (1) BR8902396A (fr)
CA (1) CA1311991C (fr)
DE (2) DE3818077A1 (fr)
ES (1) ES2044205T5 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2089317T3 (es) * 1991-09-19 1996-10-01 Schloemann Siemag Ag Procedimiento e instalacion para la fabricacion de banda de acero.
DE4134159C1 (en) * 1991-10-11 1992-12-17 Mannesmann Ag, 4000 Duesseldorf, De Continuous casting process of steel, for redn. of scrap - comprises pouring molten steel into open-ended mould to produce strand, then reducing cross=section
AT398396B (de) * 1993-02-16 1994-11-25 Voest Alpine Ind Anlagen Verfahren zum herstellen eines bandes, vorstreifens oder einer bramme
DE4403048C1 (de) * 1994-01-28 1995-07-13 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Rechteck-Dünnbrammen
DE4403049C1 (de) * 1994-01-28 1995-09-07 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Dünnbrammen
CA2164343C (fr) 1994-04-04 2002-01-01 Yoshikazu Matsumura Procede de coulee en continu a double rouleaux et dispositif afferent
JP3008821B2 (ja) * 1994-07-29 2000-02-14 住友金属工業株式会社 薄鋳片の連続鋳造方法および装置
IT1280171B1 (it) * 1995-05-18 1998-01-05 Danieli Off Mecc Linea di colata verticale per bramme
DE19529049C1 (de) * 1995-07-31 1997-03-20 Mannesmann Ag Hochgeschwindigkeits-Dünnbrammenanlage
KR100368253B1 (ko) 1997-12-09 2003-03-15 주식회사 포스코 미니밀프로세스에의한열연판의제조방법
IT1302582B1 (it) * 1998-10-01 2000-09-29 Giovanni Arvedi Processo e relativa linea di produzione per la fabbricazione direttadi pezzi finiti stampati o imbutiti da nastro a caldo ultrasottile
DE19931331A1 (de) 1999-07-07 2001-01-18 Siemens Ag Verfahren und Einrichtung zum Herstellen eines Stranges aus Metall
FI116453B (fi) * 2000-12-20 2005-11-30 Outokumpu Oy Menetelmä kerrosmetallituoteaihion valmistamiseksi ja kerrosmetallituoteaihio
CN100427229C (zh) * 2005-07-26 2008-10-22 北京交通大学 一种钢背铝基复合板液液相复合方法及装置
CN100396391C (zh) * 2005-09-01 2008-06-25 中冶东方工程技术有限公司 薄带钢铸轧生产工艺
IT202000000928A1 (it) 2020-01-20 2021-07-20 Kverneland Group Ravenna Srl Rotopressa

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898135C (de) * 1948-12-19 1953-11-26 Adolf Reimitz Verfahren zum Herstellen von Blechen, Baendern, Profilen und Rohren aus Metallen durch Giessen duenner Vorprodukte im Walzenspalt
AT280191B (de) * 1966-12-01 1970-04-10 Gerb Boehler & Co Ag Verfahren zur Herstellung von Walzprodukten aus Stranggußerzeugnissen mit Hilfe von zwei Walzenpaaren
JPS5916862B2 (ja) * 1973-03-26 1984-04-18 日本鋼管株式会社 連続鋳造法
JPS5422777B2 (fr) * 1973-09-17 1979-08-09
JPS5160633A (en) * 1974-11-25 1976-05-26 Nippon Kokan Kk Haganeno renzokuchuzoho
JPS5180624A (en) * 1975-01-13 1976-07-14 Nippon Kokan Kk Haganenorenzokuchuzoho oyobi sonosochi
US4519439A (en) * 1977-07-26 1985-05-28 Jernjontoret Method of preventing formation of segregations during continuous casting
JPS5516752A (en) * 1978-07-24 1980-02-05 Nippon Steel Corp Directly rolling molten steel to thin sheet
JPS56119607A (en) * 1980-02-25 1981-09-19 Mitsubishi Heavy Ind Ltd Continuous manufacture of thin steel sheet
EP0286862B1 (fr) * 1987-04-13 1992-05-13 Thyssen Stahl Aktiengesellschaft Procédé pour fabriquer une bande d'acier

Also Published As

Publication number Publication date
CN1018157B (zh) 1992-09-09
DE3818077A1 (de) 1989-11-30
EP0344095B2 (fr) 2000-03-22
EP0344095A3 (fr) 1991-03-06
CN1038955A (zh) 1990-01-24
US4976306A (en) 1990-12-11
BR8902396A (pt) 1990-01-16
EP0344095A2 (fr) 1989-11-29
JPH0220650A (ja) 1990-01-24
ES2044205T3 (es) 1994-01-01
CA1311991C (fr) 1992-12-29
ATE92797T1 (de) 1993-08-15
ES2044205T5 (es) 2000-07-01
JP3065321B2 (ja) 2000-07-17
DE58905221D1 (de) 1993-09-16
DE3818077C2 (fr) 1991-06-20

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