EP1393839A1 - Dispositif et procédé pour couler du métal en fusion - Google Patents

Dispositif et procédé pour couler du métal en fusion Download PDF

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Publication number
EP1393839A1
EP1393839A1 EP03016364A EP03016364A EP1393839A1 EP 1393839 A1 EP1393839 A1 EP 1393839A1 EP 03016364 A EP03016364 A EP 03016364A EP 03016364 A EP03016364 A EP 03016364A EP 1393839 A1 EP1393839 A1 EP 1393839A1
Authority
EP
European Patent Office
Prior art keywords
cover
inert gas
distribution channel
molten metal
interior
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.)
Withdrawn
Application number
EP03016364A
Other languages
German (de)
English (en)
Inventor
Guido Dr.-Ing Stebner
Manfred Dr.-Ing. Walter
Wilhelm Dipl.-Ing. Mankau
Joachim Stolz
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 EP1393839A1 publication Critical patent/EP1393839A1/fr
Withdrawn legal-status Critical Current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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/108—Feeding additives, powders, or the like
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like

Definitions

  • the invention relates to an apparatus and a method for casting molten metal, especially for Pouring molten steel in a strip caster.
  • thin slabs or cast strip is usually the molten metal from the ladle first over a so-called “Shadow pipe” in a distribution channel, also “Tundish” called, poured. With conventional slab or The melt is then continuously cast from the distribution channel distributed on the casting molds.
  • One way to melt directly into a band shed is to melt over the melt Distribution channel in one between the opposite rotating casting rolls of a two-roll casting machine to pour the trained casting gap.
  • the on the The circumferential surface of the casting rolls solidifying there and forms bowls that pass through when they pass the casting gap are pressed against each other, so that a solid cast tape leaves the casting gap. It shows however, that it is particularly when shedding Melting steel to cast strip to considerable disruption the surface condition of the cast strip in Form of oxidic inclusions comes.
  • the object of the invention is therefore a Device and method to create it allow molten metal, especially molten steel, straight to a tape without the risk of oxide inclusions to shed.
  • This task is performed in relation to the device for Pouring molten metal, especially for potting of molten steel in a strip caster according to the invention solved in that such a device with a Distribution channel in which the molten metal in particular via a shadow pipe that can be lowered into the distribution channel can be filled with a covering the distribution channel Cover, and with an inert gas supply for pumping of inert gas in the from the distribution channel together with the cover enclosed interior is equipped.
  • a casting device designed according to the invention is the distribution channel with an inert gas supply connected, via that of the surrounded by the distribution channel Room with a potted metal inert, inert gas can be purged. On this way the distribution room can be contained Oxygen as far as possible before the melt enters remove.
  • a cover which the distribution channel can be closed In order to do this in a targeted and safe manner, one instructs Device according to the invention on a cover which the distribution channel can be closed.
  • the task of the cover is the interior of the Distribution channel during the introduction of inert gas and during the casting process compared to the environment like this to isolate that penetration as much as possible Oxygen from the environment in the interior of the Distribution channel suppressed and contact of oxygen is prevented with the melt.
  • the interior of the tundish is encompassed so that it towards the environment is complete, and according to the invention simultaneously an inert gas supply is provided, through which the interior of the tundish can be flushed with inert gas so that it Pouring the melt is largely free of oxygen, is the danger of the formation of oxide inclusions in the direct casting of molten metal into cast strip reduced to a minimum.
  • the distribution channel is until then the oxygen contained in the interior repressed.
  • the inert gas is preferred after Heating of the distribution channel initiated.
  • the cover the channel only after the heating process has ended make.
  • the supply of the inert gas is expediently after Pour the melt into the channel at least as long continued until more suitable as a result of the addition Slag generator on the contained in the distribution channel Melt has formed a slag layer. If this layer of slag completely covers the melt, it prevents contact with in the Ambient atmosphere containing oxygen even if the inert gas supply to the interior of the distribution channel is throttled or interrupted.
  • the Invention in a particularly advantageous embodiment before that the inert gas supply with a Slag powder addition device for adding flow or pourable slag formers, in particular Slag powder to which from the inert gas supply in the Interior promoted inert gas flow is connected.
  • the distribution channel 1 is part of a device for Pouring molten steel, typically at a Two-roll casting machine for producing cast Steel band is used.
  • the outer side walls 2 and the bottom 3 of the trough-like, formed upwardly open distribution channel 1 are through welded steel plates formed on each other their assigned to the interior 4 of the distribution channel 1 Side are covered with a refractory material 5.
  • a discharge opening 6 is formed in the refractory material 5.
  • a not shown Plugs are used, which is also not on one shown, lifting and lowering plug rod is attached. By lifting or lowering the stopper rod the Outflow opening more or less released and so the Outflow of melt from the distribution channel 1 regulated.
  • a frame 7 placed on the top opening of the Surrounding gutter 1.
  • the frame 7 also carries one around the upper opening of the distribution channel 1 Channel 8, for example, by a U-steel profile is formed.
  • the channel can also pass through any other suitable profile or from individual parts be composed.
  • a pouring or pourable refractory material for example a suitable sand, filled.
  • a cover 9 On the distribution channel 1 is a cover 9, which completely covers the upper opening of the distribution channel 1 and sits with its side edges on the frame 7.
  • the Cover 9 is approximately in the middle of its longitudinal extent divided into two parts 9a, 9b.
  • One part 9a has in lower area of its associated with the other part 9b Side extends over the distribution channel, in Projection 9c protruding toward the other part 9b on while on the other part 9b in the upper area its associated with the first part 9a corresponding, in the direction of the first part 9a protruding projection is formed. That way when cover 9 is placed on distributor trough 1 an overlap zone between their parts 9a, 9b formed by the tightness of the cover 9 despite is guaranteed in two parts.
  • the outer walls of the parts 9a, 9b of the cover 9 are each made of sheet steel, which on their the Interior 4 assigned to the inside of the distribution channel Refractory material 10 are occupied.
  • part 9a of the Cover 9 is formed through an opening 11 through which a shadow tube, not shown here, for Pouring the molten steel into the interior 4 of the Distribution channel 1 can be performed.
  • part 9a of the cover is concerned Feedthrough 12 designed for a supply pipe 13, through which the interior 4 with the cover 9 attached an inert gas supply 14a is connected.
  • a device 14b to add a powdery slag former B. that through the supply pipe 13 in the direction of Interior 4 of the distributor channel 1 flowing inert gas stream G connected.
  • the second part 9b has a passage 17 which, when the distribution channel 1 is closed, is aligned with Outflow opening 6 is aligned and through which stopper rod explained above is guided.
  • the parts bear on their free lateral outer walls 9a, 9b sheet metal ribs 18, which proceed from the respective Outer wall initially obliquely downwards from the one in question Point the wall away before it is bent downwards are and run parallel to the respective outer wall. Grip with cover 9 seated on distribution channel 1 the sheet metal ribs 18 in the sand filled in the channels 8. In this way, it can withstand high temperatures lateral sealing even of such leaks ensured the inevitable between the cover 9 and the frame 7 supporting them are present.
  • one of the parts 9a, 9b can have a further opening have a temperature measurement sensor 19 for detection the temperature prevailing in the interior 4 becomes.
  • a spout 21 in the distribution channel 1 remaining after the casting process is complete Remove the melt or slag.
  • the distribution channel 1 Before pouring the molten steel, the distribution channel 1 with the help of the heater, not shown Operating temperature warmed up. Depending on the Available heater can do this at opened or closed by the cover 9 Distribution channel 1 take place. Is the gutter 1 during the Heating covered, so the heater is through the opening 14 provided for this purpose in the interior 4 guided.
  • the inert gas supply is over the supply pipe 13 inert gas G into the interior 4 promoted, and that until the interior 4 contained air volume essentially completely from the Interior 4 is displaced.
  • inert gas production ensured that the melt pending its exit only minimal contacts from the strip casting machine Has atmospheric oxygen. In this way, the stand the formation of oxide inclusions in the Surface of the cast steel strips at all times pouring, especially at the beginning of the pouring process reduced to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP03016364A 2002-08-14 2003-07-19 Dispositif et procédé pour couler du métal en fusion Withdrawn EP1393839A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10237152 2002-08-14
DE2002137152 DE10237152A1 (de) 2002-08-14 2002-08-14 Vorrichtung und Verfahren zum Vergießen von Metallschmelze

Publications (1)

Publication Number Publication Date
EP1393839A1 true EP1393839A1 (fr) 2004-03-03

Family

ID=31196999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03016364A Withdrawn EP1393839A1 (fr) 2002-08-14 2003-07-19 Dispositif et procédé pour couler du métal en fusion

Country Status (3)

Country Link
EP (1) EP1393839A1 (fr)
DE (1) DE10237152A1 (fr)
PL (1) PL361583A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108463299A (zh) * 2016-02-04 2018-08-28 新日铁住金株式会社 熔融金属用的添加材料投入方法和熔融金属用的添加材料投入装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7659019B2 (en) 2005-09-16 2010-02-09 Idatech, Llc Thermally primed hydrogen-producing fuel cell system
CN108655353B (zh) * 2017-03-30 2020-04-28 宝山钢铁股份有限公司 一种薄带连铸布流系统及其作业方法
CN108655356B (zh) * 2017-03-30 2020-09-25 宝山钢铁股份有限公司 一种薄带连铸布流系统及其使用方法
CN108655385B (zh) * 2017-03-30 2020-09-25 宝山钢铁股份有限公司 一种薄带连铸布流系统及其预热方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452434A (en) * 1981-03-27 1984-06-05 Outokumpu Oy Combination of a smelting-furnace pouring lip and casting gutter
JPS62212044A (ja) * 1986-03-12 1987-09-18 Nippon Steel Corp タンデイツシユ内溶鋼への粉体吹込み方法
JPS63149057A (ja) * 1986-12-12 1988-06-21 Kawasaki Steel Corp タンデイツシユ内溶鋼の清浄化方法
US5004495A (en) * 1990-02-05 1991-04-02 Labate M D Method for producing ultra clean steel
JPH03243252A (ja) * 1990-02-20 1991-10-30 Nippon Steel Corp 連鋳用タンディッシュにおける溶鋼の清浄化方法
JPH10175048A (ja) * 1996-12-17 1998-06-30 Nippon Steel Corp 溶鋼の酸化防止方法
JP2001225153A (ja) * 2000-02-18 2001-08-21 Nippon Steel Corp 鋼の連続鋳造方法および連続鋳造鋳片

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1164803B (it) * 1979-07-09 1987-04-15 Centro Speriment Metallurg Sistema di raffredamento e alligazione della massa fusa della colata continua

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452434A (en) * 1981-03-27 1984-06-05 Outokumpu Oy Combination of a smelting-furnace pouring lip and casting gutter
JPS62212044A (ja) * 1986-03-12 1987-09-18 Nippon Steel Corp タンデイツシユ内溶鋼への粉体吹込み方法
JPS63149057A (ja) * 1986-12-12 1988-06-21 Kawasaki Steel Corp タンデイツシユ内溶鋼の清浄化方法
US5004495A (en) * 1990-02-05 1991-04-02 Labate M D Method for producing ultra clean steel
JPH03243252A (ja) * 1990-02-20 1991-10-30 Nippon Steel Corp 連鋳用タンディッシュにおける溶鋼の清浄化方法
JPH10175048A (ja) * 1996-12-17 1998-06-30 Nippon Steel Corp 溶鋼の酸化防止方法
JP2001225153A (ja) * 2000-02-18 2001-08-21 Nippon Steel Corp 鋼の連続鋳造方法および連続鋳造鋳片

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 067 (M - 673) 2 March 1988 (1988-03-02) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 404 (M - 757) 26 October 1988 (1988-10-26) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 034 (M - 1204) 28 January 1992 (1992-01-28) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 25 12 April 2001 (2001-04-12) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108463299A (zh) * 2016-02-04 2018-08-28 新日铁住金株式会社 熔融金属用的添加材料投入方法和熔融金属用的添加材料投入装置

Also Published As

Publication number Publication date
DE10237152A1 (de) 2004-03-04
PL361583A1 (en) 2004-02-23

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