EP0914222B1 - Enveloppe de protection - Google Patents

Enveloppe de protection Download PDF

Info

Publication number
EP0914222B1
EP0914222B1 EP97931931A EP97931931A EP0914222B1 EP 0914222 B1 EP0914222 B1 EP 0914222B1 EP 97931931 A EP97931931 A EP 97931931A EP 97931931 A EP97931931 A EP 97931931A EP 0914222 B1 EP0914222 B1 EP 0914222B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
collar
shroud
shrouding
ladle
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 - Lifetime
Application number
EP97931931A
Other languages
German (de)
English (en)
Other versions
EP0914222A1 (fr
Inventor
Ian Ellis
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.)
Foseco International Ltd
Original Assignee
Foseco International Ltd
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 Foseco International Ltd filed Critical Foseco International Ltd
Publication of EP0914222A1 publication Critical patent/EP0914222A1/fr
Application granted granted Critical
Publication of EP0914222B1 publication Critical patent/EP0914222B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

  • This invention relates to a shrouding means to be attached to the underside of a molten metal handling vessel and is particularly concerned to provide an improved means of attaching a shroud to the vessel.
  • the vessel may be a ladle for steel and for convenience the invention will be more specifically described below with reference to a ladle for steel, although it will be appreciated that it is not intended to be limited thereto.
  • the present invention aims to provide an improved fixing means to attach the shroud to the e.g. ladle, which means provides an improved delivery means for the inert gas.
  • the invention provides in one aspect a means to shroud molten metal flowing from an outlet in a molten metal handling vessel, the means comprising a tubular shroud having an enlarged head portion to be fixed to the underside of the vessel in correspondence with the outlet and a sleeve or collar to fit over the tubular shroud with one end of the sleeve or collar in contact with the enlarged head portion, the sleeve or collar having an inlet for gas and a gas conduit to lead the gas to the interior of the enlarged head portion of the shroud.
  • the invention also provides in a second aspect a sleeve or collar for use in the shrouding means of the invention, the sleeve or collar having dimensions to be received over the tubular portion of a shroud and having an inlet for gas and a conduit attached to the sleeve or collar to deliver the gas to one end of the sleeve or collar, and means to attach the sleeve or collar to the shroud and/or to a molten metal handling vessel.
  • the vessel is preferably a ladle and the shroud may be attached to the underside of the ladle via, for example, a conventional slide gate valve to control flow of molten metal from the ladle.
  • the shroud may be fixed to the underside of the ladle or to the slide gate valve by any convenient means.
  • fixing means are well known in the art and do not form a part of the present invention.
  • the fixing means may be adapted so that the sleeve is attached to the ladle, the shroud then being held in place by its enlarged head portion resting on the upper perimeter of the sleeve.
  • the upper end of the sleeve and the lower end of the head portion of the shroud may conveniently be provided with locating means, e.g. lugs on the one and holes in the other, to assist accurate location of the two together.
  • the gas conduit in the sleeve may terminate in correspondence with a channel in the head portion of the shroud and/or with holes leading to the interface between the upper end of the enlarged head and the vessel or slide gate valve.
  • a perforated ring e.g. of metal, may be attached to the outside of the sleeve at its upper end to assist delivery of the gas around the shroud.
  • the gas inlet on the sleeve may conveniently be an annular protrusion on the external face of the sleeve for coupling to a gas line, e.g. a source of argon.
  • the sleeve may be made of any suitable material, steel being preferred, and it may be re-usable.
  • the ladle shroud may be made of any suitable refractory material, e.g. graphitised alumina conventionally used.
  • the sleeve may, if necessary, be insulated internally with refractory heat-insulating material to reduce heat transfer through the sleeve or it may be cooled, e.g. by air or inert gas.
  • the invention provides an improved shrouding means that can readily be used to replace existing systems and in which the accessibility of the delivery means for inert gas is improved.
  • a steel sleeve 10 has an end ring 11 to be connected to the underside of the flanged enlarged head of a shroud.
  • the sleeve has an inlet connector 12 for attachment to a source of inert gas.
  • the connector 12 leads to a pipe 13 running internally along the length of the sleeve to exit at its end 11 at an outlet 13A.
  • the sleeve has on its exterior adjacent the end remote from end 11, two equi-spaced support blocks 14 which may be used, where desired, in robot attachment system (not shown). At end 11, sleeve 10 has, also on its exterior, three equi-spaced location lugs 15 to assist location with a shroud.
  • sleeve 10 is shown slid over the tubular length 21 of a shroud 20 until it meets the underside of the enlarged head 22 of the shroud.
  • a fibre gasket 23 is positioned between the end 11 of sleeve 10 and the flanged underside of head 22, although it will be appreciated that other sealing means may be employed, if desired.
  • the lugs 15 of sleeve 10 fit into corresponding holes 24 in the head of the shroud.
  • Outlet 13A of the pipe 13 feeds into a channel 25 in the head 22 which in turn feeds to an annular recess 26 in the head.
  • the sleeve 10 is provided with a fibre insulating sleeve 30.
  • sleeve 40 has an end ring 41 to be connected to the underside of the flanged enlarged head of a shroud (not shown).
  • the sleeve has an inlet connector 42 for attachment to a source of inert gas.
  • the connector 42 leads to a pipe 43 running externally along the length of the sleeve towards end ring 41.
  • Pipe 43 leads into a perforated annular ring 44 running around the exterior of the sleeve adjacent the end ring 41.
  • the perforations 45 are in the surface of the ring 44 facing the end ring 41 whereby a shrouding of inert gas can be provided in the restricted area where the sleeve is attached to a ladle shroud.
  • the precise means of delivery of inert gas into the head of the shroud may vary considerably.
  • the head may contain an annular ring of permeable material into which the gas is fed via suitable holes and channels communicating with the outlet of the gas pipe in the sleeve.
  • the actual means of connection to the ladle may be any suitable means and are not specifically described here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Claims (20)

  1. Moyen pour protéger du métal fondu provenant d'une sortie d'un récipient de manipulation de métal fondu, caractérisé en ce que le moyen comporte une enveloppe tubulaire (20) ayant une partie de tête agrandie (22) à fixer au dessous du récipient en correspondance avec la sortie et un manchon ou virole (10, 40) à installer par dessus l'enveloppe tubulaire, une extrémité (11, 41) du manchon ou virole (10, 40) étant au contact de la partie de tête agrandie (22), le manchon ou virole (10, 40) ayant une entrée (12, 42) pour un gaz et un conduit (13, 43) de gaz pour acheminer le gaz jusqu'à l'intérieur de la partie de tête agrandie (22) de l'enveloppe (20).
  2. Moyen de protection selon la revendication 1, caractérisé en ce que le récipient est une poche de coulée et l'enveloppe (20) est fixée au dessous de la poche.
  3. Moyen de protection selon la revendication 1, caractérisé en ce que le récipient est une poche de coulée et l'enveloppe (20) est fixée à la poche par l'intermédiaire d'une vanne tiroir.
  4. Moyen de protection selon la revendication 1, caractérisé en ce que le récipient est une poche de coulée, le manchon ou virole (10, 40) est fixé à la poche et l'enveloppe (20) est maintenue en place par sa partie de tête agrandie (22) reposant sur le pourtour supérieur du manchon ou virole (10, 40).
  5. Moyen de protection selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'extrémité supérieure (11, 41) du manchon ou virole (10, 40) et l'extrémité inférieure de la partie de tête (22) de l'enveloppe (20) sont pourvues de moyens de repérage.
  6. Moyen de protection selon la revendication 5, caractérisé en ce que les moyens de repérage comprennent des saillies (15) soit sur le manchon ou virole (10, 40) soit sur l'enveloppe (20) et des trous (24) dans l'autre.
  7. Moyen de protection selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le conduit de gaz dans le manchon ou virole (10, 40) se termine en correspondance avec un canal (25) dans la partie de tête (22) de l'enveloppe (20).
  8. Moyen de protection selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le conduit (13, 43) de gaz dans le manchon ou virole (10, 40) se termine par des trous débouchant à l'interface entre l'extrémité supérieure de la tête agrandie (22) de l'enveloppe (20) et le récipient ou la vanne tiroir.
  9. Moyen de protection selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'un anneau perforé (44) est fixé à l'extérieur du manchon ou virole (10, 40), à son extrémité supérieure (11).
  10. Moyen de protection selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'entrée (12, 42) de gaz sur le manchon ou virole (10, 40) est une protubérance annulaire (44) sur la face externe du manchon ou virole (10, 40).
  11. Moyen de protection selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le manchon ou virole (10,40) est en acier.
  12. Moyen de protection selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'enveloppe (20) est en matière réfractaire.
  13. Moyen de protection selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le manchon ou virole (10, 40) est isolé intérieurement avec un isolant thermique réfractaire.
  14. Manchon ou virole (10, 40) destiné à être utilisé dans un moyen de protection selon la revendication 1, caractérisé en ce que le manchon ou virole (10, 40) a des dimensions pour être reçu par dessus la partie tubulaire (21) d'une enveloppe (20), une entrée (12, 42) pour gaz, un conduit (13, 43) fixé au manchon ou virole (10, 40) et un moyen pour fixer le manchon ou virole (10, 40) à l'enveloppe (20) et/ou à un récipient de manipulation de métal fondu.
  15. Manchon ou virole (10, 40) selon la revendication 14, caractérisé en ce que le manchon ou virole (10, 40) a un moyen de repérage pour mettre en place le manchon ou virole (10, 40) sur l'enveloppe (20).
  16. Manchon ou virole (10, 40) selon la revendication 15, caractérisé en ce que les moyens de repérage comprennent des saillies (15) ou des trous.
  17. Manchon ou virole (10, 40) selon l'une quelconque des revendications 14 à 16, caractérisé en ce que le manchon ou virole (10, 40) a un anneau perforé (44) fixé à son extérieur, à son extrémité supérieure (11, 41).
  18. Manchon ou virole (10, 40) selon l'une quelconque des revendications 14 à 17, caractérisé en ce que l'entrée (12, 42) de gaz est une protubérance annulaire sur la face extérieure du manchon ou collet (10, 40).
  19. Manchon ou virole (10, 40) selon l'une quelconque des revendications 14 à 18, caractérisé en ce que le manchon ou virole (10, 40) est en acier.
  20. Manchon ou virole (10, 40) selon l'une quelconque des revendications 14 à 19, caractérisé en ce que le manchon ou virole (10, 40) est isolé intérieurement avec un isolant thermique réfractaire.
EP97931931A 1996-07-26 1997-07-15 Enveloppe de protection Expired - Lifetime EP0914222B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9615765 1996-07-26
GBGB9615765.6A GB9615765D0 (en) 1996-07-26 1996-07-26 Shrouding means
PCT/GB1997/001911 WO1998004370A1 (fr) 1996-07-26 1997-07-15 Enveloppe de protection

Publications (2)

Publication Number Publication Date
EP0914222A1 EP0914222A1 (fr) 1999-05-12
EP0914222B1 true EP0914222B1 (fr) 2000-03-08

Family

ID=10797571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97931931A Expired - Lifetime EP0914222B1 (fr) 1996-07-26 1997-07-15 Enveloppe de protection

Country Status (9)

Country Link
EP (1) EP0914222B1 (fr)
AR (1) AR007971A1 (fr)
AT (1) ATE190253T1 (fr)
AU (1) AU3551497A (fr)
DE (1) DE69701401D1 (fr)
GB (1) GB9615765D0 (fr)
TW (1) TW358047B (fr)
WO (1) WO1998004370A1 (fr)
ZA (1) ZA976433B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345015A (en) * 1998-12-23 2000-06-28 Didier Werke Ag Refractory shield for use in metal teeming

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1581201A (en) * 1978-05-09 1980-12-10 Air Prod & Chem Apparatus for shielding molten metal during teeming
ZA821071B (en) * 1981-03-03 1983-01-26 Flogates Ltd Improvements in the pouring of molten metals
CH660700A5 (de) * 1983-08-12 1987-06-15 Finanz Handels Invest Fhi Abschirmvorrichtung fuer einen giessstrahl aus fluessigem material.
JPS6360068A (ja) * 1986-08-29 1988-03-16 Kobe Steel Ltd 造塊注入流のシ−ル装置
SU1754321A1 (ru) * 1988-06-10 1992-08-15 Украинский научно-исследовательский институт специальных сталей, сплавов и ферросплавов Устройство дл защиты струи металла при разливке из ковша

Also Published As

Publication number Publication date
WO1998004370A1 (fr) 1998-02-05
AU3551497A (en) 1998-02-20
EP0914222A1 (fr) 1999-05-12
ZA976433B (en) 1998-03-02
ATE190253T1 (de) 2000-03-15
AR007971A1 (es) 1999-11-24
TW358047B (en) 1999-05-11
DE69701401D1 (de) 2000-04-13
GB9615765D0 (en) 1996-09-04

Similar Documents

Publication Publication Date Title
EP0179837B1 (fr) Dispositif de fermeture utilise dans la manipulation de metal en fusion
US4480770A (en) Method and apparatus for the protection of molten metal flows in furnaces
JPH0137228B2 (fr)
US4708327A (en) Discharge nozzle assembly and methods of formation and operation thereof
NZ199702A (en) Bottom pour vessel:injecting gas into molten contents
US5723055A (en) Nozzle assembly having inert gas distributor
EP0914222B1 (fr) Enveloppe de protection
EP0424502B1 (fr) Injecteur de gaz
KR20010093090A (ko) 스토퍼 로드
US4815715A (en) Gas purging assembly for supplying gas to molten metal in a metallurgical vessel
ATE36478T1 (de) Feuerfeste kanalverbindung fuer horizontalstranggiessanlagen.
US5614121A (en) Refractory block for continuous casting
CN211915485U (zh) 一种连铸中间包包盖
RU2102671C1 (ru) Устройство для создания инертной атмосферы в металлургическом ковше для транспортировки расплавленного чугуна от разливочной площадки доменной печи
US4840297A (en) Apparatus for shielding a molten metal stream
US4261554A (en) Tap-hole closing arrangement of a metallurgical vessel
US4730812A (en) Apparatus for shielding a molten metal stream
RU2172228C2 (ru) Сопловой узел с распределителем инертного газа
US5670075A (en) Sealing gas delivery system for sliding joints
JPS59225876A (ja) タンディッシュ用スライド式閉鎖装置
GB2189583A (en) Injection elements for melt containing vessels
US5676195A (en) Method of and apparatus for limiting ingress of gas to incipient continuous cast slabs
WO1997004901A1 (fr) Entree limitee de gaz dans un moule a coulee en continu
GB2236114A (en) Gas injection
CA1261621A (fr) Obturateur utilise en manutention des metaux en fusion

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990121

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE DK ES FI FR GB IT LU NL SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19990722

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE DK ES FI FR GB IT LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20000308

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000308

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20000308

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000308

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000308

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20000308

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000308

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000308

REF Corresponds to:

Ref document number: 190253

Country of ref document: AT

Date of ref document: 20000315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69701401

Country of ref document: DE

Date of ref document: 20000413

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000608

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000715

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010715

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010715