WO2003013763A1 - Procede et installation pour produire des produits plats et allonges - Google Patents

Procede et installation pour produire des produits plats et allonges Download PDF

Info

Publication number
WO2003013763A1
WO2003013763A1 PCT/EP2002/008711 EP0208711W WO03013763A1 WO 2003013763 A1 WO2003013763 A1 WO 2003013763A1 EP 0208711 W EP0208711 W EP 0208711W WO 03013763 A1 WO03013763 A1 WO 03013763A1
Authority
WO
WIPO (PCT)
Prior art keywords
strand
cooling section
furnace
separating device
plant
Prior art date
Application number
PCT/EP2002/008711
Other languages
German (de)
English (en)
Inventor
Thomas Fest
Dirk Letzel
Adolf Zajber
Original Assignee
Sms Demag Aktiengesellschaft
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
Application filed by Sms Demag Aktiengesellschaft filed Critical Sms Demag Aktiengesellschaft
Priority to EP02794548A priority Critical patent/EP1414603B1/fr
Priority to AT02794548T priority patent/ATE286792T1/de
Priority to DE50202008T priority patent/DE50202008D1/de
Publication of WO2003013763A1 publication Critical patent/WO2003013763A1/fr

Links

Classifications

    • 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
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • 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

Definitions

  • the invention relates to a method for the production of flat and long products in a production plant, for example from thin slabs, thick slabs, billets, blooms, carrier pre-profiles or the like with a continuous casting installation, comprising a mold, a strand guide with a pulling and straightening machine, one Cooling section and a separating device for the strand, as well as a downstream compensation furnace.
  • the invention also relates to an apparatus for performing the method.
  • the precipitation of aluminum nitride is one reason for these problems due to the rapid heating in direct hot charging and in the rolling process.
  • Aluminum nitrides can be found in most aluminum-tempered steels. These are formed and precipitated at the austenitic grain boundaries when the steel goes through the transformation phase from austenite to austenite plus ferrite. If the cast strand is then placed in a furnace for reheating before rolling, the precipitates remain at the austenitic grain boundaries even if the steel changes phase back to full austenite.
  • the precipitation of aluminum nitride creates further problems with other deposits such as copper, vanadium, etc., with the result of an extremely break-sensitive microstructure. According to a teaching of document EP 0 650 790 A1, the following is proposed to solve the aforementioned problems:
  • a surface temperature between 400 and 900 ° C after "natural tempering", i.e. a reheating by residual heat contained in the block is sought.
  • the positioning of a quenching box is also provided immediately after the pulling and straightening machine and before the separating device.
  • the document DE 44 16 752 A1 describes a method and a production plant for the production of hot wide strip.
  • the corresponding production plant consists of a continuous casting plant for thin slabs between 40 and 70 mm, a compensating furnace and a rolling mill, the exit temperature of the thin slab from the continuous casting machine being above 950 ° C. Between the continuous casting machine and the leveling furnace, the surface temperature of the slab is lowered to such an extent that a structural change from austenite to ferrite / pearlite occurs.
  • the cooling section used is designed as a water cooling section and consists of several chilled beams that can be switched on and off.
  • the previously known method preferably provides that the temperature of the thin slab is lowered to below 600 ° C. to a depth of at least 2 mm below the surface by choosing the cooling intensity.
  • the average surface temperature should not fall below the martensite threshold of the respective material quality.
  • the cooling time is chosen so that at least 70% austenite is converted into ferrite / pearlite.
  • the document EP 0 587 150 A1 describes a method for the heat treatment of continuously cast slabs or steel blocks, whereby surface brittleness can be effectively avoided. In particular, the occurrence of surface cracks can be effectively suppressed in the case of aluminum-calmed steels, even if the steels contain a proportion of 0.0080 to 0.0300 percent by weight of nitrogen and / or 0.03 to 0.25 percent by weight of lead.
  • the process comprises the steps:
  • the invention has for its object to provide a method for improving the surface of steel strands for all continuous casting formats, which offers independence from the casting speed and avoids "natural tempering" with core heat of the casting strand.
  • the invention proposes in a method according to the preamble of claim 1 that the positioning of the cooling section is carried out downstream behind the separating device, preferably in the immediate vicinity of the compensating furnace or preheating furnace.
  • the amount of water and the pressure gives the possibility of regulating the strand transport speed.
  • Another embodiment of the method provides that for the intensive removal of heat from the cooling section, this is enclosed with a covering and from it steam and residues of undevaporated cooling water are forcibly drawn off.
  • the invention advantageously provides that the water quantity and water pressure are controlled or regulated according to the current strand transport speed.
  • the positioning of the cooling section downstream behind the separating device the dependence of the cooling section on the speed of the casting process is eliminated.
  • a further embodiment of the method according to the invention provides that the distance between the pulling-out and straightening machine and the separating device is used for homogenizing the temperature of different strand areas, for example on edges or surfaces.
  • a further embodiment of the method according to the invention provides that the cooling section is arranged in an area of the strand guide with the highest possible temperature of the strand between the separating device and the compensating furnace.
  • a system for the production of flat or long products in a production system for example from thin slabs, thick slabs, billets, blooms, carrier pre-profiles or the like with a continuous casting system, comprising a mold, a strand guide with a pulling and straightening machine, a cooling section and a separating device
  • the equalizing furnace be arranged as close as possible behind the cooling section and that these be arranged as close as possible behind the separating device.
  • a mold 11 can be seen, which is designed for the continuous casting of a cast strand 6. Below this are segments 12 to 14 of a strand guide 1 with a large number of guide rollers.
  • the pulling and straightening machine 2 ensures that the strand 6 is pulled out and transported evenly. Behind it is the separating device in the transport direction. device 3 provided. It can be a pair of scissors or an oxy-fuel cutting machine. This is arranged at a comparatively close distance behind the pulling and straightening machine 2.
  • a suction device 10 with a powerful exhaust port is connected to the housing 9, which sucks off the steam generated during quenching and the unused water spray particles and forcibly withdraws it from the cooling section 4.
  • the compensating furnace or preheating furnace 5 is arranged at a close distance behind it, wherein recrystallization of the structure in the direction of pearlite / ferrite is initiated by external heat supply.
  • the "natural quenching" which is disadvantageous for the surface quality of the cast strand is avoided in this way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

La présente invention concerne un procédé de production de produits plats et/ou allongés dans une installation de production, par exemple à partir de brames minces, de brames épaisses, de billettes, de blooms, d'ébauches de profilé de support ou d'éléments similaires, au moyen d'une installation de coulée continue. Cette installation comprend une lingotière (11), un système de guidage de barre (1) comprenant une machine d'étirage et de dressage (2), une section de refroidissement (4) et un système de séparation (3) pour la barre (6), ainsi qu'un four de compensation ou un four préchauffeur (5), situé en aval. Afin d'améliorer la surface des barres d'acier, la section de refroidissement (4) est placée en aval, derrière le système de séparation (3), de préférence à proximité immédiate du four de compensation ou du four préchauffeur (5). La présente invention concerne également une installation de production de configuration correspondante.
PCT/EP2002/008711 2001-08-07 2002-08-05 Procede et installation pour produire des produits plats et allonges WO2003013763A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02794548A EP1414603B1 (fr) 2001-08-07 2002-08-05 Procede et installation pour produire des produits plats et allonges
AT02794548T ATE286792T1 (de) 2001-08-07 2002-08-05 Verfahren und anlage zur produktion von flach- und langprodukten
DE50202008T DE50202008D1 (de) 2001-08-07 2002-08-05 Verfahren und anlage zur produktion von flach- und langprodukten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10138794A DE10138794A1 (de) 2001-08-07 2001-08-07 Verfahren und Anlage zur Produktion von Flach- und Langprodukten
DE10138794.6 2001-08-07

Publications (1)

Publication Number Publication Date
WO2003013763A1 true WO2003013763A1 (fr) 2003-02-20

Family

ID=7694701

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/008711 WO2003013763A1 (fr) 2001-08-07 2002-08-05 Procede et installation pour produire des produits plats et allonges

Country Status (4)

Country Link
EP (1) EP1414603B1 (fr)
AT (1) ATE286792T1 (fr)
DE (2) DE10138794A1 (fr)
WO (1) WO2003013763A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087893A1 (fr) * 2006-01-11 2007-08-09 Sms Demag Ag Procede et dispositif de coulee continue
CN101351285B (zh) * 2006-01-11 2011-12-28 Sms西马格股份公司 用于连铸的方法和装置
CN107866359A (zh) * 2017-12-20 2018-04-03 南通亿思特机器人科技有限公司 一种浸塑补偿链生产设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048567B4 (de) 2008-10-23 2022-07-21 Sms Group Gmbh Verfahren und Anordnung zum Kühlen eines Gießstrangs in einer Stranggießanlage
DE102009049897B4 (de) 2009-10-20 2023-09-14 Sms Group Gmbh Verfahren und Vorrichtung zum Stranggießen eines Metallstranges

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997005971A1 (fr) * 1995-07-31 1997-02-20 Mannesmann Ag Unite de production de brames minces a haute vitesse
JPH11254115A (ja) * 1998-03-09 1999-09-21 Daido Steel Co Ltd 連続鋳造・分塊圧延における鋳片・鋼片の表面品質オンライン判定方法および判定装置
JP2000246411A (ja) * 1999-02-26 2000-09-12 Sanyo Special Steel Co Ltd 連続鋳造ブルームの製造方法
DE19953252A1 (de) * 1999-11-04 2001-05-10 Sms Demag Ag Verfahren zur Oberflächenbearbeitung eines kontinuierlich gegossenen Stahlproduktes und Einrichtung hierzu

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997005971A1 (fr) * 1995-07-31 1997-02-20 Mannesmann Ag Unite de production de brames minces a haute vitesse
JPH11254115A (ja) * 1998-03-09 1999-09-21 Daido Steel Co Ltd 連続鋳造・分塊圧延における鋳片・鋼片の表面品質オンライン判定方法および判定装置
JP2000246411A (ja) * 1999-02-26 2000-09-12 Sanyo Special Steel Co Ltd 連続鋳造ブルームの製造方法
DE19953252A1 (de) * 1999-11-04 2001-05-10 Sms Demag Ag Verfahren zur Oberflächenbearbeitung eines kontinuierlich gegossenen Stahlproduktes und Einrichtung hierzu

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 14 22 December 1999 (1999-12-22) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12 3 January 2001 (2001-01-03) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087893A1 (fr) * 2006-01-11 2007-08-09 Sms Demag Ag Procede et dispositif de coulee continue
AU2006337470B2 (en) * 2006-01-11 2010-02-04 Sms Siemag Aktiengesellschaft Method and apparatus for continuous casting
KR101037078B1 (ko) 2006-01-11 2011-05-26 에스엠에스 지마크 악티엔게젤샤프트 연속 주조 방법 및 장치
CN101351285B (zh) * 2006-01-11 2011-12-28 Sms西马格股份公司 用于连铸的方法和装置
US8522858B2 (en) 2006-01-11 2013-09-03 Sms Siemag Aktiengesellschaft Method and apparatus for continuous casting
US8596335B2 (en) 2006-01-11 2013-12-03 Sms Siemag Aktiengesellschaft Method and apparatus for continuous casting
CN107866359A (zh) * 2017-12-20 2018-04-03 南通亿思特机器人科技有限公司 一种浸塑补偿链生产设备

Also Published As

Publication number Publication date
DE50202008D1 (de) 2005-02-17
DE10138794A1 (de) 2003-02-27
ATE286792T1 (de) 2005-01-15
EP1414603B1 (fr) 2005-01-12
EP1414603A1 (fr) 2004-05-06

Similar Documents

Publication Publication Date Title
DE69431178T3 (de) Verfahren zur thermischen Oberflächenbehandlung eines Stranges
EP1752548B1 (fr) Procédé de fabrication de bande en acier magnétique à grains orientés
EP1937429B1 (fr) Procede et dispositif de coulee continue
EP2416900B1 (fr) Procédé et dispositif servant à préparer un produit de laminage à chaud
RU2294386C2 (ru) Способ изготовления стальной полосы
EP1951451B2 (fr) Procede de fabrication d'un feuillard d'acier lamine a chaud et installation combinee de coulee et de laminage en vue de la mise en oeuvre du procede
EP2349612B1 (fr) Procédé et installation de coulée continue pour la production de brames épaisses
DE102008020412A1 (de) Verfahren und Vorrichtung zum Herstellen eines Metallbandes durch Gießwalzen
EP1981660B1 (fr) Procédé destinés à la production de bandes métalliques laminées à chaud, notammment de bandes en acier à qualité de surface élevée
WO2010121763A1 (fr) Procédé et dispositif de coulée continue d'une brame
DE102009036378A1 (de) Verfahren und Vorrichtung zum Herstellen eines mikrolegierten Stahls, insbesondere eines Röhrenstahls
WO2009141207A1 (fr) Procédé et installation de coulée continue pour la fabrication de brames épaisses
DE102009060256A1 (de) Verfahren zum Warmwalzen einer Bramme und Warmwalzwerk
EP3495086A1 (fr) Procédé et dispositif de fabrication d'un matériau composite en forme de bande
EP1414603B1 (fr) Procede et installation pour produire des produits plats et allonges
EP2483014B1 (fr) Procédé de coulée de bandes d'acier et installation de coulée en bandes
EP0808672B1 (fr) Procédé et installation de fabrication des tôles en acier inoxydable ou en acier de carbone à partir des brames minces coulées
DD284175A5 (de) Verfahren zum kuehlen eines metallischen gegenstandes waehrend des stranggiessens
EP1093866A2 (fr) Procédé et dispositif pour améliorer la qualité de la surface d'une barre coulée dans une installation de coulée continue
DE19913498C1 (de) Verfahren zum Herstellen eines Warmbandes und Warmbandlinie zur Durchführung des Verfahrens
DE10333589B9 (de) Verfahren zur Herstellung eines bandförmigen Verbundwerkstoffes für die Gleitlagerherstellung und Vorrichtung zur Durchführung des Verfahrens
EP0563786B1 (fr) Procédé de coulée continue du type courbe d'acier hautement allié
DE10333591B4 (de) Fließer zum Aufbringen einer Flüssigkeit, insbesondere einer Metallschmelze auf ein Substrat
DE102011082163A1 (de) Verfahren und Vorrichtung zur Entzunderung einer Oberfläche eines metallischen Halbzeugs

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EC EE ES FI GB GD GE GH HR HU ID IL IN IS JP KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NO NZ OM PH PL PT RU SD SE SG SI SK SL TJ TM TN TR TZ UA UG US UZ VN YU ZA ZM

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZM ZW AM AZ BY KG KZ RU TJ TM AT BE BG CH CY CZ DK EE ES FI FR GB GR IE IT LU MC PT SE SK TR BF BJ CF CG CI GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2002794548

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002794548

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 2002794548

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP