EP0015251B1 - Dispositif pour récipient métallurgique avec un tube protecteur - Google Patents

Dispositif pour récipient métallurgique avec un tube protecteur Download PDF

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Publication number
EP0015251B1
EP0015251B1 EP19800890019 EP80890019A EP0015251B1 EP 0015251 B1 EP0015251 B1 EP 0015251B1 EP 19800890019 EP19800890019 EP 19800890019 EP 80890019 A EP80890019 A EP 80890019A EP 0015251 B1 EP0015251 B1 EP 0015251B1
Authority
EP
European Patent Office
Prior art keywords
jacket
protective tube
outlet opening
casting
metallurgical vessel
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
Application number
EP19800890019
Other languages
German (de)
English (en)
Other versions
EP0015251A1 (fr
Inventor
Franz Kagerhuber
Wolfgang Lederer
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.)
Voestalpine AG
Original Assignee
Voestalpine 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
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0015251A1 publication Critical patent/EP0015251A1/fr
Application granted granted Critical
Publication of EP0015251B1 publication Critical patent/EP0015251B1/fr
Expired 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
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
    • B22D37/005—Shielding the molten metal stream
    • 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
    • B22D11/106—Shielding the molten jet

Definitions

  • the invention relates to a device on a metallurgical vessel with a protective tube for a metal pouring jet flowing from an outlet opening of the vessel, in particular at an intermediate vessel of a continuous casting installation, the protective tube surrounding the pouring jet peripherally and extending from the outlet opening of the metallurgical vessel over at least part of the Has longitudinal extension of the pouring stream extending jacket which has an opening which can be closed by means of a cover.
  • the melt is usually poured from a ladle into an intermediate vessel and flows from the intermediate vessel through an outlet opening into a continuous mold arranged below the intermediate vessel.
  • the pouring jet is passed through a protective tube, which protective tube extends from the outlet opening of the metallurgical vessel, i.e. in continuous casting plants from the pan or from the tundish, extends over at least part of the longitudinal extent of the pouring stream.
  • the protective tube is immersed in the melt of the intermediate vessel or the mold, or it ends, as was the case with billet continuous caster, at a distance above the bath level of the intermediate vessel or the mold.
  • the protective tube is connected to a gas supply line for supplying an inert gas.
  • the outlet opening grows after a certain operating time, so that one is forced to observe the outlet opening from time to time during the casting, for which purpose - the protective tube - with the ones listed above Disadvantages - again laterally removed, that is, had to be moved transversely to the direction of the pouring jet.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to create a device of the type described in the introduction, in which it is possible to remove and install, for example, replace the protective tube at any time during the casting operation, that is to say without interrupting the casting operation to be brought into position by another or, for example, only when the flow has flowed out of the metallurgical vessel without the melt striking the protective tube.
  • the opening of the jacket is designed as a slot which extends over the entire length of the jacket and its width is greater than the diameter of the pouring jet and that the jacket is releasably attached to the metallurgical vessel by means of a quick-release fastener .
  • a preferred embodiment is characterized in that the jacket and the cover can be fastened tightly to a gas supply device known per se provided at the outlet opening and surrounding it peripherally.
  • the quick-release fastener is expediently formed from two mutually opposite hooks which engage in guide rails mounted on the intermediate vessel. This makes it possible to move the protective tube along the guide rails for assembly and disassembly without being impeded by the pouring stone protruding from the intermediate vessel.
  • the steel flows out of the intermediate vessel 1 melt 2, for example aluminum-soaked steel melt, through an outlet opening 3 provided in the bottom of the vessel, which is provided in a pouring stone 4, into the continuous mold 5 arranged below the outlet opening 3.
  • This is a billet casting mold.
  • the size of the cross section of the outlet opening 3 cannot be regulated here.
  • the correct height of the bath level 6 in the mold 5 is regulated by coordinating the height of the molten steel 2 in the tundish 1 and the rate at which the strand is pulled out of the mold 5.
  • a cover slag is not provided on the bathroom mirror 6.
  • a protective tube 8 is provided on the underside of the intermediate vessel and is detachably mounted on the intermediate vessel by means of a quick-release fastener 9.
  • the quick-release fastener 9 is formed from two opposing hooks 11 which engage in guide rails 10 mounted on the intermediate vessel.
  • the guide rails 10 are arranged at a distance below the base plate of the intermediate vessel, so that the protective tube can be moved along the guide rails for assembly and disassembly without being impeded by the pouring stone protruding from the intermediate vessel.
  • the guide rails 10 are welded to a cylindrical ring body 12, which ring body is mounted via a radially outwardly directed flange 13 to a further ring body 14, which is arranged concentrically to the first ring body 12 and is detachably fastened to the intermediate vessel.
  • a gas supply line 15 for supplying inert protective gas is inserted into this second annular body 14.
  • the ring body 12 causes a uniform distribution of the protective gas around the pouring jet 7.
  • the jacket 16 of the protective tube 8 surrounds the pouring jet 7 at a peripheral distance and ends at a distance above the bath level in the mold. Since the mold has only a very small diameter in the illustrated embodiment, the jacket 16 ends above the mold.
  • the protective gas which flows in a meandering diversion around the first ring body 12 into the protective tube 8, passes through the gap 19 formed between the upper side 17 of the mold and the lower edge 18 of the protective tube.
  • the protective tube has an opening 20 in the jacket, which is designed as a continuous slot, ie, extending over the entire length 21 of the protective tube 8.
  • the width 22 of the slot 20 is larger than the diameter 23 of the pouring jet 7.
  • This slot 20 can be closed by a slide 24 arranged on the outside of the jacket 16 and movable in the circumferential direction of the jacket.
  • Two guide pins 25 are used to guide the slide 24.
  • a sealing strip 26 ensures a good closure.
  • the slide can be opened or closed by means of a handle 27.
  • the slide needs to be opened, whereupon an oxygen lance can be inserted through the slot and the necessary maintenance work can be carried out at the outlet opening.
  • the flow is passed into an emergency mold through a drainage channel 29 which can be pivoted in the direction of the arrows 28 in FIG. 1 to below the outlet opening.
  • This gutter is appropriately designed so that it can also be inserted through the slot 20 of the protective tube 8.
  • the end of the gutter can be bent in the direction of the pouring jet axis, so that when the gutter swivels, its end enters the slot 20 of the protective tube 8 without being obstructed by the jacket of the protective tube.
  • the protective tube can also be brought into position only after the start of pouring, that is to say after the flow has been drained off via the drainage channel, the protective tube being moved along the guide rails 13 with the slide 24 open to a stop 30 below the outlet opening and the pouring jet 7 passes through the slot 20 of the jacket. An impact of the pouring jet 7 on any part of the protective tube 8 is avoided. It is also possible to replace the protective tube at any time during the casting operation, without the pouring jet hitting the protective tube.
  • the protective tube can also serve to protect molten steel as it flows out of a ladle into an intermediate vessel. It can also be used in steel slab casting and, more generally, in transferring metal melts where the metal jet is to be protected from contamination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (3)

1. Dispositif pour un récipient métallurgique (1) avec un tube protecteur (8) pour un jet de coulée de métal (7) s'écoulant d'une ouverture de sortie (3) du récipient, en particulier pour un récipient intermédiaire (1) d'une installation de coulée continue, où le tube protecteur (8) présente une enveloppe (16) entourant périphériquement le jet de coulée (17) et s'étendant à partir de l'ouverture de sortie (3) du récipient métallurgique sur au moins une partie de l'étendue longitudinale du jet de coulée (7), cette enveloppe présentant une ouverture (20) susceptible d'être fermée par un dispositif de couverture (24), caractérisé en ce que l'ouverture (20) de l'enveloppe (16) est réalisée comme une fente qui s'étend sur toute la longueur (21) de l'enveloppe et dont la largeur (22) est plus grande que le diamètre (23) du jet de coulée (7) et en ce que l'enveloppe (16) est fixée de manière amovible au récipient métallurgique (1) à l'aide d'un dispositif de fermeture rapide (9).
2. Dispositif suivant la revendication 1, caractérisé en ce que l'enveloppe (16) et le dispositif de couverture (24) peuvent être fixés de façon étanche à un dispositif d'amenée de gaz (12 à 15) connu en soi, prévu sur l'ouverture de sortie (3) et entourant périphériquement celle-ci.
3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que le dispositif de fermeture rapide (9) est formé de deux crochets (11) se faisant face, pénétrant dans des rails de guidage (10) montés sur le récipient intermédiaire (1).
EP19800890019 1979-02-20 1980-02-13 Dispositif pour récipient métallurgique avec un tube protecteur Expired EP0015251B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1287/79 1979-02-20
AT128779A AT368415B (de) 1979-02-20 1979-02-20 Einrichtung an einem metallurgischen gefaess mit einem schutzrohr

Publications (2)

Publication Number Publication Date
EP0015251A1 EP0015251A1 (fr) 1980-09-03
EP0015251B1 true EP0015251B1 (fr) 1982-06-30

Family

ID=3510620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800890019 Expired EP0015251B1 (fr) 1979-02-20 1980-02-13 Dispositif pour récipient métallurgique avec un tube protecteur

Country Status (7)

Country Link
EP (1) EP0015251B1 (fr)
JP (1) JPS55114450A (fr)
AT (1) AT368415B (fr)
BR (1) BR8000915A (fr)
CA (1) CA1157227A (fr)
DE (1) DE3060604D1 (fr)
ES (1) ES8100124A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103350222A (zh) * 2013-07-12 2013-10-16 抚顺特殊钢股份有限公司 新型模铸氩气保护装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2490123A1 (fr) * 1980-09-15 1982-03-19 Air Liquide Dispositif obturateur a plaques pour trous de coulee de recipient contenant un metal en fusion
ZA821071B (en) * 1981-03-03 1983-01-26 Flogates Ltd Improvements in the pouring of molten metals
DE3342071C2 (de) * 1983-11-22 1986-08-07 Didier-Werke Ag, 6200 Wiesbaden Vorrichtung zum Abschirmen eines metallischen Gießstrahls
FR2586210B1 (fr) * 1985-08-14 1988-05-13 Air Liquide Dispositif de protection contre l'oxydation et/ou la nitruration d'un jet de metal liquide et son utilisation
KR100864444B1 (ko) * 2002-04-24 2008-10-20 주식회사 포스코 연속주조설비의 용강 산화방지장치
JP2012205968A (ja) * 2009-08-07 2012-10-25 Kinotech Solar Energy Corp 液体供給装置
CN112024866B (zh) * 2020-09-04 2021-12-21 攀钢集团攀枝花钢铁研究院有限公司 全密封模铸浇注保护装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7008854U (de) * 1970-03-11 1970-11-26 Krupp Ag Huettenwerke Vorrichtung zum vergiessen unter schutzgas.
CH570835A5 (en) * 1974-06-14 1975-12-31 Concast Ag Sealing casting tube to tundish outlet nozzle - for use in continuous casting of steel
CH598888A5 (fr) * 1976-03-09 1978-05-12 Concast Ag
DE7631150U1 (de) * 1976-10-05 1977-04-28 Metacon Ag, Zuerich (Schweiz) Metallurgisches gefaess mit einem auslauf
DE2800503A1 (de) * 1977-01-27 1978-08-03 Uss Eng & Consult Vorrichtung zum anbringen eines giessrohres fuer einen giessbehaelter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103350222A (zh) * 2013-07-12 2013-10-16 抚顺特殊钢股份有限公司 新型模铸氩气保护装置

Also Published As

Publication number Publication date
ES488721A0 (es) 1980-11-01
ES8100124A1 (es) 1980-11-01
EP0015251A1 (fr) 1980-09-03
DE3060604D1 (en) 1982-08-19
AT368415B (de) 1982-10-11
ATA128779A (de) 1982-02-15
BR8000915A (pt) 1980-10-29
CA1157227A (fr) 1983-11-22
JPS55114450A (en) 1980-09-03

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