EP1340565A2 - Dispositif et procédé de coulée continue d'une bande à partir d'un métal liquide - Google Patents

Dispositif et procédé de coulée continue d'une bande à partir d'un métal liquide Download PDF

Info

Publication number
EP1340565A2
EP1340565A2 EP03001818A EP03001818A EP1340565A2 EP 1340565 A2 EP1340565 A2 EP 1340565A2 EP 03001818 A EP03001818 A EP 03001818A EP 03001818 A EP03001818 A EP 03001818A EP 1340565 A2 EP1340565 A2 EP 1340565A2
Authority
EP
European Patent Office
Prior art keywords
casting
cast strip
casting roll
roll shield
gap
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
EP03001818A
Other languages
German (de)
English (en)
Other versions
EP1340565A3 (fr
EP1340565B1 (fr
Inventor
Wilhelm Dipl.Ing. Mankau
Werner Dipl.Ing. Schümers
Guido Dr.Ing. Stebner
Manfred Dr.-Ing. Walter
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.)
Outokumpu Nirosta GmbH
Original Assignee
ThyssenKrupp Nirosta GmbH
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 ThyssenKrupp Nirosta GmbH filed Critical ThyssenKrupp Nirosta GmbH
Publication of EP1340565A2 publication Critical patent/EP1340565A2/fr
Publication of EP1340565A3 publication Critical patent/EP1340565A3/fr
Application granted granted Critical
Publication of EP1340565B1 publication Critical patent/EP1340565B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • 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

Definitions

  • the invention relates to an apparatus and a method for the continuous casting of molten metal, in particular molten steel, to cast tape.
  • molten metal in particular molten steel
  • Devices are two each during the casting process counter rotating, axially parallel and internally cooled casting rolls available, which the Long sides of a casting gap formed between them limit. So much is poured into this casting gap poured liquid melt that above the Pouring gap forms a melt sump. The one from this Melt sump getting onto the casting rolls solidifies and is poured into the casting gap by the casting rolls promoted. In the pouring gap, the so on the Casting rollers formed shells and even more flowable Melt the cast tape, which is then formed deducted and sent for further processing.
  • the invention was based on the object of a device and a method of the type discussed above create where the burden of from that Cast tape emitted heat is reduced.
  • This task is based on the above explained prior art by a device for Pouring molten metal, in particular Melting steel, loosened to cast tape, with two in the casting operation counter rotating casting rolls, which the long sides of one formed between them Limit the casting gap with a conveying path for removal the cast strip emerging from the casting gap, and with a preferably below the casting gap arranged casting roll shield, in which the from the Casting gap emerging belt through an inlet opening enters, is equipped, the Casting roll shielding defines a cooling zone in which a temperature prevails during the casting operation that is lower than the temperature of the cast strip warmed gases.
  • the above task is accomplished by a Process for casting molten metal, in particular Melting steel, dissolved into cast strip, in which the Molten metal in one between two in the casting shop counter-rotating casting rolls Casting gap cast into a belt and over a conveyor path is removed, the cast tape at Leaving the casting gap goes through a cooling zone in which maintaining a temperature which is lower is the temperature of the one heated by the cast tape Gases.
  • a device according to the invention is close a zone adjacent to the exit area of the casting gap trained in the targeted lowering of the temperature is brought about. Through this cooling the natural, thermal flow ("chimney effect") interrupted, in which the of the cast tape at its Transport via the conveyor path heated gases against the Ascending direction of the belt.
  • the procedure according to the invention thus forms a cooling zone Barrier that prevents that Band heated hot gases are used to hold the rollers achieve the required components.
  • the at conventional belt casting devices as a result of Heating of the gas is inevitable chimney effect effectively counteracted.
  • the effect of the cooling zone is in an inventive Device supported by that of a Casting roll shielding is bounded.
  • This shield on the one hand represents a physical obstacle through which is the flow of hot gases to the rolls or one in the area of the rollers, for example Working platform is interrupted.
  • Casting roll shielding for targeted cooling of the in gases available in their confined space.
  • the existing in a device according to the invention In this way, shielding enables a special one effective protection of the casting rolls for their storage and their operation required components and all other in the vicinity of the casting rolls arranged aggregates.
  • the Casting roll shielding in combination with the cooling of the gases according to the invention in the cooling zone a decisive reduction in the risk to the Area of the casting rollers employed.
  • the formation of a cooling zone in the Casting roll shielded area can are generated, for example, by at least fluid cooled one of the walls of the casting roll shield is.
  • the cooled wall can at least have a cooling channel through which the cooling fluid flows during the casting operation.
  • liquid cooling ensures that the heat acting on the casting roll shield quickly and is effectively dissipated.
  • the Cooling the casting roll shield to an intense Cooling down of those that hit the casting roll shield Gases. These cooled gases mix with those in the area delimited by the casting roll shield flowing hot gases, so that these are cooled and become a zone of lower temperature established.
  • the formation of the cooling zone can also be special be effectively supported by at least a device for blowing cooling gas into the Cooling zone is provided.
  • the effect of Cooling gas can be additionally improved in that the Flow of the cooling gas blown into the cooling zone against the direction of flow of the cast strip heated gases is directed.
  • Such an alignment the cooling gas flow leads to an intense Mixing the hot gases with the cooling gases so that a particularly effective cooling zone within a short time built up and the rise of hot gases over the Casting roll shielding prevented particularly reliably becomes.
  • the effectiveness of the can be further increased Cooling gas flow by making the surface of the cast tape.
  • Cooling the tape will reduce the amount of that on the Belt surface during the transport of the belt developing scale reduced. Further suppressed scale can be formed in such cases where a cooling gas is blown into the cooling area, that an inert gas is used as the cooling gas.
  • an inert gas is used as the cooling gas.
  • blowing an inert gas into the cooling zone not only has the strip surface cooled, but it will also contact the surface of the cast tape with the ambient atmospheric oxygen and along with the emergence of larger ones Scale layers effective on the belt surface counteracted.
  • unwanted carburizing of the strip can also result to be counteracted, that alternatively or additionally for blowing intergas a reducing effect cool gas is blown into the cooling zone.
  • Casting roll shielding in the shape of a pointed roof in the Casting rolls delimited below the casting gap extends existing space.
  • the inlet opening for performing the from the Casting gap emerging cast tape preferably in Ridge area of the casting roll shield formed.
  • the Casting roll shield from one of the bearings of the casting rolls supportive, from a working position to a Waiting position portable frame is worn.
  • the frame can be the frame with the rollers and the Casting roll shielding when changing rolls as replace complete unit. So after a Transport the frame from the working to the Waiting position not only the rollers themselves are serviced but also the casting roll shield and the for example to cool the walls of the Casting roll shielding and for blowing in the cooling gases the units provided for the casting roll shielding.
  • the conveyor path of the cast tape surrounds at least in sections
  • the casting roll shield on such an enclosure put on or is part of such an enclosure.
  • This embodiment of the invention proves to be particularly useful if in the housing to suppress scale formation inert atmosphere is maintained.
  • the casting roll shield forms part of one Housing, so it is in terms of possibility a simple periodic maintenance cheap if the Casting roll shield releasably connected to the housing is. This applies in particular if the Casting roll shielding in the manner already mentioned is connected to a transportable frame. It should between the casting roll shield and the housing a seal should be present. Such a seal that at the same time the thermal loads in the area of Resists pouring device, can be accomplished that they are in the form of a sand-filled gutter is formed in which the casting roll shield with stands at the bottom.
  • the load on the aggregates and components of the Pouring device can also be further reduced as a result be that a suction device for vacuuming the from cast tape heated gases is present.
  • a suction device for vacuuming the from cast tape heated gases is present.
  • the enclosure can be a Have suction opening to which the suction device connected.
  • the device 1 for casting a molten steel A cast steel strip B has two axially parallel arranged to each other and opposite to each other rotating casting rolls 2,3 on the long sides one formed between them casting gap 4 and limit melt sump 5 arranged above, in the the molten steel is given.
  • the two side, of the casting rolls 2, 3 free transverse sides of the casting gap 4 and the melt sump 5 are each through here in individual side seals, not shown sealed.
  • the casting rolls 2,3 continuously cooled by a stream of cooling water.
  • the cast steel strip B withdrawn from the casting gap 4 becomes a hot rolling stand 7 via a conveyor path 6 transported in which it is continuously to a hot strip W is hot rolled with a certain final thickness.
  • the funding route 6 has a starting from the casting gap 4 in essentially vertical first section, which is then arched into one for Hot rolling mill 7 leading, essentially horizontally passing second section.
  • the conveyor path 6 is up to the hot rolling stand 7 in essentially completely surrounded by a housing 8, which shields him from the environment in such a way that the hot rolled hot strip W in direct contact with the Ambient air outside the housing 8 comes.
  • the upper part of the housing assigned to the casting rolls 2, 3 8 is formed by a casting roll shield 9, the detachable on the top of the opposite of the Casting roll shielding 9 much larger main part 10 the housing 8 is put on.
  • This is on the top Edge of the main part 10 is a channel 11 filled with sand molded in which the casting roll shield 9 with her the lower edge area assigned to the main part 10.
  • the channel 11 forms a with the sand contained in it Seal in which the sand contained in the channel 11 ensures that none in the area of the trough 11 Ambient air in the 8 enclosed by the housing Interior 12 arrives.
  • Both the casting roll shield 9 and the main part 10 of the housing 8 are on the conveyor path 6 assigned inner pages with a layer 13 Refractory lined. Due to the location 13 on the one hand the thermal load of the steel outer wall of the housing reduced. On the other hand, the layer 13 also forms insulation, through which the from the enclosure 8 to the environment effective heat radiation is reduced.
  • the casting roll shield 9 is shaped like a pointed roof trained that their the casting rolls 2,3 each assigned walls 9a, 9b pointed towards the casting gap 4 are designed to converge and up to extend just below the casting rolls 2,3.
  • the casting roll shield 9 In your the edge area assigned to the main part 10 of the housing the casting roll shield 9 has a frame portion from a low height with which it sits in the channel 11.
  • the housing 8 and with it the casting roll shield 9 extend laterally across the width of the cast steel strip B, the housing in their protruding beyond the width of the casting rolls 2,3 Part is closed.
  • Cooling channels 14 formed through the in the casting operation a stream of cooling water is also continuously passed becomes. In this way, the walls 9a, 9b are at least cooled just like the casting rolls 2,3 (Fig. 2).
  • the casting roll shield 9 carries on the Interior 12 of the housing 8 assigned to its side Walls 9a, 9b each have nozzles 20, 21, from which in the casting operation one each from an inert gas or a mixture an inert gas and a reducing gas existing Blown gas stream G into the interior 12 of the housing 8 becomes.
  • the nozzles 20, 21 are aligned in such a way that at least part of what is coming out of them Gas flow G the surface of the cast steel strip B sweeps.
  • the casting roll shield 9 is on a frame 23 attached, the casting rolls 2,3 and others, not here shown aggregates contributes to the supply and Drive of the casting rollers 2,3 are required.
  • the frame 23 can with the casting rollers 2,3 carried by him Casting roll shield 9 and the other units his working position shown in the figures in a waiting position, not shown, is transported, in which maintenance work is carried out.
  • the cast steel strip B continuously withdrawn from the casting gap 4 and likewise continuously via the conveyor path 6 to the hot rolling stand 7 promoted.
  • the gas contained in the housing 8 is heated and rises as hot gas flows T as a result of its temperature increase against the conveying direction F in the housing 8.
  • the cooling the surface of the cast steel strip B and the continuously performed cooling of the walls 9a, 9b Casting roll shield 9 is running in the cooling zone K. maintain a temperature lower than the temperature of the hot gas stream T.
  • hot gas stream T is cooled, so that his ascent movement is interrupted.
  • the front the cooling zone K, from the gas flows G and T Formed gas volumes are via the suction pipe 22nd aspirated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
EP03001818A 2002-02-27 2003-01-29 Dispositif de coulée continue d'une bande à partir d'un métal liquide Expired - Lifetime EP1340565B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10208340A DE10208340B4 (de) 2002-02-27 2002-02-27 Vorrichtung zum kontinuierlichen Vergießen von Metallschmelze zu gegossenem Band
DE10208340 2002-02-27

Publications (3)

Publication Number Publication Date
EP1340565A2 true EP1340565A2 (fr) 2003-09-03
EP1340565A3 EP1340565A3 (fr) 2005-02-16
EP1340565B1 EP1340565B1 (fr) 2008-11-19

Family

ID=27675018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03001818A Expired - Lifetime EP1340565B1 (fr) 2002-02-27 2003-01-29 Dispositif de coulée continue d'une bande à partir d'un métal liquide

Country Status (4)

Country Link
EP (1) EP1340565B1 (fr)
AT (1) ATE414578T1 (fr)
DE (2) DE10208340B4 (fr)
PL (1) PL205707B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110170626A (zh) * 2019-06-20 2019-08-27 中冶赛迪工程技术股份有限公司 一种铸轧预冷浇注装置
CN111495971A (zh) * 2020-05-06 2020-08-07 义乌聚龙自动化科技有限公司 一种铝合金板连铸连轧设备和方法
CN118455469A (zh) * 2024-07-12 2024-08-09 唐山非晶科技有限公司 一种非晶带材用的喷带卷收一体机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0830223B1 (fr) 1996-03-19 1999-11-03 Ishikawajima-Harima Heavy Industries Co., Ltd. Absorbeurs de chaleur sans contact pour la coulee en bandes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2164343C (fr) * 1994-04-04 2002-01-01 Yoshikazu Matsumura Procede de coulee en continu a double rouleaux et dispositif afferent
AUPN101495A0 (en) * 1995-02-10 1995-03-09 Bhp Steel (Jla) Pty Limited Casting steel strip
DE69813424T2 (de) * 1997-09-18 2004-03-04 Castrip, Llc Bandgiessanlage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0830223B1 (fr) 1996-03-19 1999-11-03 Ishikawajima-Harima Heavy Industries Co., Ltd. Absorbeurs de chaleur sans contact pour la coulee en bandes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110170626A (zh) * 2019-06-20 2019-08-27 中冶赛迪工程技术股份有限公司 一种铸轧预冷浇注装置
CN110170626B (zh) * 2019-06-20 2024-02-06 中冶赛迪工程技术股份有限公司 一种铸轧预冷浇注装置
CN111495971A (zh) * 2020-05-06 2020-08-07 义乌聚龙自动化科技有限公司 一种铝合金板连铸连轧设备和方法
CN118455469A (zh) * 2024-07-12 2024-08-09 唐山非晶科技有限公司 一种非晶带材用的喷带卷收一体机
CN118455469B (zh) * 2024-07-12 2024-12-03 唐山非晶科技有限公司 一种非晶带材用的喷带卷收一体机

Also Published As

Publication number Publication date
PL205707B1 (pl) 2010-05-31
EP1340565A3 (fr) 2005-02-16
DE10208340A1 (de) 2003-09-11
PL358931A1 (en) 2003-09-08
EP1340565B1 (fr) 2008-11-19
DE10208340B4 (de) 2004-02-05
DE50310794D1 (de) 2009-01-02
ATE414578T1 (de) 2008-12-15

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