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EP0746434A1 - Procede et dispositif de refroidissement d'acier en fusion - Google Patents

Procede et dispositif de refroidissement d'acier en fusion

Info

Publication number
EP0746434A1
EP0746434A1 EP95910398A EP95910398A EP0746434A1 EP 0746434 A1 EP0746434 A1 EP 0746434A1 EP 95910398 A EP95910398 A EP 95910398A EP 95910398 A EP95910398 A EP 95910398A EP 0746434 A1 EP0746434 A1 EP 0746434A1
Authority
EP
European Patent Office
Prior art keywords
gas
strand
steel
steel strand
cooling
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.)
Granted
Application number
EP95910398A
Other languages
German (de)
English (en)
Other versions
EP0746434B1 (fr
Inventor
Wolfgang Reichelt
Ulrich Urlau
Paul Freier
Karl-Heinz Spitzer
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=6512282&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0746434(A1) "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
Publication of EP0746434A1 publication Critical patent/EP0746434A1/fr
Application granted granted Critical
Publication of EP0746434B1 publication Critical patent/EP0746434B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0697—Accessories therefor for casting in a protected atmosphere
    • 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

Definitions

  • the invention relates to a method for cooling molten steel, in particular strip casting, in which at least part of the liquid metal emerging from a nozzle of a metallurgical vessel solidifies by contact with a cooling surface, and an apparatus for carrying out the method.
  • the liquid metal is led into a cooled form, whereby a solidification front forms from the outside to the inside of the strand due to the contact with the cooling form.
  • an inert gas it is known to supply them with an inert gas.
  • the gas used here is introduced into the housing in an undirected manner and is used exclusively for cooling and usually to reduce scale formation.
  • the inert gas was brought into contact with either the liquid or the already solidified surface.
  • BandgieQen as is known from DE 38 10 302, for example, the liquid metal is placed on a cooled endless belt and the free surface of the belt strand cools during its transport on the conveyor belt, so that the free surface in the front area near the nozzle is still free is liquid and then solidifies by cooling.
  • the invention has set itself the goal of creating a method and a corresponding device with which influence on the surface of the metallic extrudate is exerted both on its shape and on its quality.
  • a gas stream is directed onto the surface of the freely accessible liquid steel strand immediately after it leaves the metal nozzle of the metallurgical vessel.
  • the strand surface is exposed to a gas that forms an inert atmosphere at least until the steel strand has completely solidified.
  • inert gases such as argon or nitrogen are used in particular.
  • the use of the gas in the vicinity of the nozzle specifically influences the heat dissipation and the surface tension.
  • the inventors propose either to heat the gas and thereby prevent the strand surface from solidifying for a predeterminable distance, or in another embodiment to cool the 6as to such an extent that it is in liquid form is promoted.
  • the temperature of the gas can be pre-set in both extreme areas.
  • the gas can also be used at room temperature.
  • the gas in a quantity and at a speed to the surface of the steel strand in such a way that the shape of the casting strand is influenced.
  • the surface can be deliberately pressed in and, for example, the profile can be given a crown in the form of a crown.
  • the gas can also be controlled in such a way that the gas kinetics additionally have a positive influence in reducing the formation of bumps.
  • Figure 1 schematically shows a longitudinal section through the casting machine
  • Figure 2 schematically shows a cross section.
  • FIG. 1 shows a metallurgical vessel 11, in which a metal melt M flows out of a metal nozzle 12.
  • the melt M is fed onto a conveyor belt 43, which is held as an endless belt by a drive drum 41 and a deflection drum 42.
  • a cooling device 44 is provided on the underside of the upper run of the conveyor belt 43, which cools the steel strand S, which is transported in the conveying direction s.
  • the metal strand 5 is surrounded by a housing 31, of which it is surrounded at the outlet 32 by a seal 33 to minimize the gas leakage.
  • Gas nozzles 25 are passed through the ceiling of the housing 31. These nozzles 25 have an angle between 0 and 45 ° with respect to the steel strand S. These gas nozzles 25 are connected to gas distributors 26 which are connected to a compressor 21 via feed lines 23. The gas nozzles 25 can be shut off individually by shut-off elements 24.
  • a heat exchanger 22 is arranged between the compressor 21 and the nozzles 25, with which the temperature of the gas forming a reduced atmosphere or of the inert gas can be predetermined.
  • the compressor 21 is connected to a gas supply station 29.
  • a connecting line 28 is provided, which connects the gas supply station 29 to the housing 31 in the region of the strand outlet 32 via a gas manifold 27.
  • FIG. 2 shows a cross section through a strip casting machine using the same position numbers as FIG. 1.
  • the arrangement of several gas nozzles 25 next to one another is shown, each of which has a shut-off element 24 and is connected to a distributor 26 which has the feed line 23.
  • a seal 34 is provided in the upper area of the deflection drum 42, which minimizes the leakage between the side cheeks of the housing 31 and the side plates of the drum 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Details (AREA)

Abstract

Selon un procédé de refroidissement d'acier en fusion, notamment par coulée en feuillards, au moins une partie de la masse fondue qui sort d'un récipient métallurgique par une buse se solidifie au contact d'une surface de refroidissement. Selon l'invention, un courant de gaz qui forme une atmosphère réductrice est dirigé sur la surface de la bande d'acier liquide librement accessible immédiatement après sa sortie par la buse et la surface de la bande d'acier est exposée à cette atmosphère gazeuse au moins jusqu'à se solidifier complètement.
EP95910398A 1994-03-04 1995-02-10 Procede et dispositif de refroidissement d'acier en fusion Expired - Lifetime EP0746434B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4407873 1994-03-04
DE4407873A DE4407873C2 (de) 1994-03-04 1994-03-04 Verfahren und Vorrichtung zum Kühlen schmelzflüssigen Stahls
PCT/DE1995/000196 WO1995023661A1 (fr) 1994-03-04 1995-02-10 Procede et dispositif de refroidissement d'acier en fusion

Publications (2)

Publication Number Publication Date
EP0746434A1 true EP0746434A1 (fr) 1996-12-11
EP0746434B1 EP0746434B1 (fr) 1998-12-30

Family

ID=6512282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95910398A Expired - Lifetime EP0746434B1 (fr) 1994-03-04 1995-02-10 Procede et dispositif de refroidissement d'acier en fusion

Country Status (13)

Country Link
US (1) US5836377A (fr)
EP (1) EP0746434B1 (fr)
JP (1) JP3016594B2 (fr)
KR (1) KR100295950B1 (fr)
CN (1) CN1046447C (fr)
AT (1) ATE175136T1 (fr)
AU (1) AU679342B2 (fr)
BR (1) BR9506980A (fr)
CA (1) CA2184719C (fr)
DE (1) DE4407873C2 (fr)
RU (1) RU2122919C1 (fr)
WO (1) WO1995023661A1 (fr)
ZA (1) ZA951664B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19811434C2 (de) * 1998-03-17 2002-05-16 Mannesmann Ag Verfahren und Vorrichtung zum Vergleichmäßigen eines schmelzflüssigen Metallfilmes
DE19823440C1 (de) * 1998-05-19 1999-12-09 Mannesmann Ag Verfahren und Vorrichtung zum endabmessungsnahen Gießen von Metall
US6527043B2 (en) 2001-05-01 2003-03-04 Antaya Technologies Corporation Apparatus for casting solder on a moving strip
ITMI20021506A1 (it) * 2002-07-10 2004-01-12 Danieli Off Mecc Dispositivo di regolazione della temperatura del nastro in un impianto di colata continua di nastro metallico
KR100537429B1 (ko) * 2003-05-13 2005-12-19 한국기계연구원 휠밴드 연속주조에 의한 마그네슘합금의 판재 제조장치 및제조방법
US7451804B2 (en) * 2006-11-22 2008-11-18 Peterson Oren V Method and apparatus for horizontal continuous metal casting in a sealed table caster
DE102009031236B3 (de) * 2009-06-26 2010-12-02 Salzgitter Flachstahl Gmbh Verfahren und Vorrichtung zum Erzeugen von Stahlbändern mittels Bandgießen
DE102010063093B4 (de) 2010-12-15 2023-07-06 Sms Group Gmbh Vorrichtung und Verfahren zum horizontalen Gießen von Metallbändern
DE102017103046A1 (de) 2017-02-15 2018-08-16 Salzgitter Flachstahl Gmbh Horizontale Bandgießanlage mit optimierter Gießatmosphäre
DE102017104279A1 (de) * 2017-03-01 2018-09-06 Salzgitter Flachstahl Gmbh Horizontale Bandgießanlage mit optimierter Kühlung
DE102017105570A1 (de) 2017-03-15 2018-09-20 Salzgitter Flachstahl Gmbh Horizontale Bandgießanlage mit optimiertem Gießband
CN110355339B (zh) * 2019-07-26 2024-03-26 武汉高智达连铸智能科技有限公司 一种去除扇形段末端氧化铁皮的装置及方法
CN113245528A (zh) * 2021-05-11 2021-08-13 大连交通大学 一种真空液态连续流变挤压成套设备及成形方法

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Publication number Priority date Publication date Assignee Title
GB1341024A (en) * 1970-10-29 1973-12-19 Ici Ltd Anthraquinone disperse dyestuffs
US4648438A (en) * 1982-04-28 1987-03-10 Hazelett Strip-Casting Corporation Method and apparatus for feeding and continuously casting molten metal with inert gas applied to the moving mold surfaces and to the entering metal
DE3227132A1 (de) * 1982-07-20 1984-01-26 Canadian Patents and Development Ltd., Ottawa, Ontario Verfahren und vorrichtung zum kontinuierlichen giessen von aluminiumhaltigen stahl- und legierungsschmelzen
JPS59150646A (ja) * 1983-02-17 1984-08-28 Kawasaki Steel Corp 金属板の連続鋳造方法およびその装置
JPS60199552A (ja) * 1984-03-23 1985-10-09 Nippon Steel Corp 金属薄帯の製造方法
DE3423834A1 (de) * 1984-06-28 1986-01-09 Mannesmann AG, 4000 Düsseldorf Verfahren und vorrichtung zum kontinuierlichen giessen von metallschmelze, insbesondere von stahlschmelze
DE3425092A1 (de) * 1984-07-07 1986-02-06 SMS Schloemann-Siemag AG, 4000 Düsseldorf Verfahren und vorrichtung zum kuehlen von kontinuierlich gefoerderten giessstraengen in einer stranggiessanlage
JPS6138747A (ja) * 1984-07-31 1986-02-24 Ishikawajima Harima Heavy Ind Co Ltd 連続鋳造方法
GB8426804D0 (en) * 1984-10-23 1984-11-28 Ciba Geigy Ag Pyridazinones preparations
DE3505537C2 (de) * 1985-02-18 1995-06-14 Knorr Bremse Ag Tastventil für Druckluftbremsen von Schienenfahrzeugen
JPS6277151A (ja) * 1985-09-30 1987-04-09 Nippon Steel Corp 双ロール型連続鋳造装置
BE1000490A4 (fr) * 1987-04-22 1988-12-27 O C C Company Ltd Procede de coulee continue d'un ruban metallique.
DE3810302A1 (de) * 1988-03-24 1989-10-12 Mannesmann Ag Giesseinrichtung zur kontinuierlichen herstellung von metallband
JPH03142046A (ja) * 1989-10-28 1991-06-17 Furukawa Electric Co Ltd:The 連続鋳造方法
US5299628A (en) * 1991-07-03 1994-04-05 Olin Corporation Method and apparatus for the casting of molten metal
JP3502107B2 (ja) * 1991-08-29 2004-03-02 Ｔｄｋ株式会社 永久磁石材料の製造方法

Non-Patent Citations (1)

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Title
See references of WO9523661A1 *

Also Published As

Publication number Publication date
DE4407873C2 (de) 1997-04-10
AU1753595A (en) 1995-09-18
JPH09511451A (ja) 1997-11-18
KR100295950B1 (ko) 2001-10-24
CN1143340A (zh) 1997-02-19
DE4407873A1 (de) 1995-09-07
CA2184719C (fr) 2005-05-10
US5836377A (en) 1998-11-17
ATE175136T1 (de) 1999-01-15
CN1046447C (zh) 1999-11-17
WO1995023661A1 (fr) 1995-09-08
AU679342B2 (en) 1997-06-26
CA2184719A1 (fr) 1995-09-08
RU2122919C1 (ru) 1998-12-10
JP3016594B2 (ja) 2000-03-06
EP0746434B1 (fr) 1998-12-30
BR9506980A (pt) 1997-09-16
ZA951664B (en) 1996-02-09

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