EP0379072B1 - Procédé d'alimentation d'une lingotière dans un système de coulée continue et un assemblage de lingotières pour la réalisation de celle-ci - Google Patents

Procédé d'alimentation d'une lingotière dans un système de coulée continue et un assemblage de lingotières pour la réalisation de celle-ci Download PDF

Info

Publication number
EP0379072B1
EP0379072B1 EP90100568A EP90100568A EP0379072B1 EP 0379072 B1 EP0379072 B1 EP 0379072B1 EP 90100568 A EP90100568 A EP 90100568A EP 90100568 A EP90100568 A EP 90100568A EP 0379072 B1 EP0379072 B1 EP 0379072B1
Authority
EP
European Patent Office
Prior art keywords
ingot mold
slit
feeding
minor
ingot
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
EP90100568A
Other languages
German (de)
English (en)
Other versions
EP0379072A3 (fr
EP0379072A2 (fr
Inventor
Leandro Nannini
Giacomo Broda
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.)
SMS Group SpA
Original Assignee
Innse Innocenti Engineering SpA
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 Innse Innocenti Engineering SpA filed Critical Innse Innocenti Engineering SpA
Publication of EP0379072A2 publication Critical patent/EP0379072A2/fr
Publication of EP0379072A3 publication Critical patent/EP0379072A3/fr
Application granted granted Critical
Publication of EP0379072B1 publication Critical patent/EP0379072B1/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
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds

Definitions

  • This invention relates to a method of feeding an ingot mold having two opposed parallel major sidewalls and two minor sidewalls and having a rectangular cross sectional shape, in a continuous steel casting system.
  • ingot mold feeding is a troublesome, if not downright critical, operation because the steel must be poured into a cavity which has a rectangular cross-sectional shape of small width.
  • the ingot mold is fed by means of a plurality of discharge outlets overlying the ingot mold and being provided with respective nozzles of an appropriate size to fit partway into the ingot mold.
  • Feeding the ingot mold from such discharge outlets does not yield, however, very thin flat blooms.
  • the minimum value for the mold width dimension on which the flat bloom thickness will depend is required to exceed the cross dimension of the nozzles, which nozzles must have, in turn, a sufficient steel discharge passage area to relieve a molten steel outflow of any proneness to blocking and suitable thickness to provide the necessary strength and resistance to wear.
  • European Patent Application No. 87116456.2 proposes an ingot mold which has an inner portion, inclusive of the inlet, with oversize cross-section so as to accommodate one or more nozzles of standard size discharge outlets. Such changes in the mold inside outline result, however, in the onset of harmful stresses through the melt skin undergoing progressive solidification.
  • US Patent 4,719,961 provides for the ingot mold to be fed by discharging the molten steel into a funnel of refractory material which overlies the mold but is not inserted through the inlet thereof. While in this way, on the one side, it becomes possible to use ingot molds of much reduced width, on the other side, the funnel presence hinders the continuous lubrication of the inner walls of the ingot mold. Consequently, it is impossible to prevent the steel from adhering on said walls, thereby the solidified steel skin may be broken and the mold rate of wear increased.
  • An additional major drawback is that the steel begins to solidify from the end section of the refractory funnel body, which results in quick deterioration thereof.
  • the problem that underlies this invention is to provide a method of feeding an ingot mold of the aforesaid type, to yield thin castings, which has such characteristics as to overcome the drawbacks noted herein above in connection with the prior art.
  • the assembly 1 comprises an ingot mold 2 of the vertical type having a rectangular cross-sectional shape wherein two opposed, parallel major sidewalls 3, 4 are held apart by two minor sidewalls 5, 6.
  • the ingot mold 2 is through-penetrated vertically by a passageway 7 having a rectangular cross-sectional shape and extending from a top inlet 2a to an outlet or discharge port 2b of the ingot mold.
  • the walls 3 to 6 of the ingot mold 2 are made of copper and plural passageways 8 are formed in their thickness for a cooling fluid to be supplied from a conduit 9, only partially shown.
  • Said minor walls 5, 6 are each provided with a respective slit 10, 10a extending over a predetermined distance from the inlet 2a of the ingot mold 2.
  • each minor wall 5, 6 Attached laterally to each minor wall 5, 6 is a respective well 11, 12 which is open at the top and provided with a vertical slit 13, 13a in register with the slit 10, 10a in the corresponding wall.
  • the wells 11 and 12 are made of a refractory material enclosed and protected by a respective metal reinforcement 14, 14a and stand up to a lower height than that of the ingot mold 2, thereby their bottoms 11a, 12a locate at a higher level than the outlet or discharge port 2b of the ingot mold 2.
  • the ingot mold 2 is fed by pouring molten steel into the wells 11 and 12 using any desired discharge device.
  • the steel will flow from the wells into the passageway 7 of the ingot mold 2 through the slits 13, 13a and 10, 10a of the wells 11 and 12 and of the walls 5 and 6, respectively.
  • the ingot mold can be easily lubricated from above with oils and powders over the inner walls to prevent the steel from clinging to them (skin breaking) and attenuate the wall wear.
  • the steel stream turbulence will be settled therein before entering the ingot mold, while any variations in the line rate and/or molten steel flow rate can be accommodated.
  • Another advantage afforded by the invention is that impurities can be decanted prior to getting into the ingot mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Claims (3)

  1. Procédé d'alimentation d'une lingotière ayant deux parois latérales principales parallèles opposées (3, 4) et deux parois latérales secondaires (5, 6) dans un système de coulée continue de l'acier, en particulier pour la production de brames, des blooms minces et plats et analogues, ayant une section transversale de forme rectangulaire, caractérisé en ce que la lingotière est alimentée par le côté par coulée d'acier fondu à travers une fente (10 ; 10a) formée dans au moins l'une des parois secondaires.
  2. Assemblage de lingotière pour des systèmes de coulée continue, en particulier pour la production de brames, de blooms minces et plats et analogues, d'un type qui comporte une lingotière (2) ayant des parois latérales principales (3, 4) et secondaires (5, 6) opposées définissant un passage (7) s'étendant depuis une entrée (2a) jusqu'à un orifice de sortie (2b) de la lingotière (2), caractérisé en ce qu'il comporte une fente (10, 10a) formée dans au moins l'une des parois secondaires (5, 6) et au moins un creuset (11, 12) relié latéralement à ladite, au moins une, paroi (5, 6) et pourvu d'une fente latérale (13, 13a) en communication avec ledit passage (7) à travers la fente (10, 10a) dans ladite, au moins une, paroi (5, 6).
  3. Assemblage de lingotière selon la revendication 2, caractérisé en ce que ledit creuset (11, 12) a une hauteur inférieure à celle de ladite lingotière (2), le fond (11a, 12a) dudit creuset (11, 12) étant à un niveau supérieur à celui de l'orifice de sortie (2b) de la lingotière (2).
EP90100568A 1989-01-17 1990-01-12 Procédé d'alimentation d'une lingotière dans un système de coulée continue et un assemblage de lingotières pour la réalisation de celle-ci Expired - Lifetime EP0379072B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1910789 1989-01-17
IT8919107A IT1228473B (it) 1989-01-17 1989-01-17 Metodo di alimentazione di una lingottiera in un impianto di colata continua e complesso di lingottiera per l'attuazione del metodo.

Publications (3)

Publication Number Publication Date
EP0379072A2 EP0379072A2 (fr) 1990-07-25
EP0379072A3 EP0379072A3 (fr) 1992-03-04
EP0379072B1 true EP0379072B1 (fr) 1995-08-02

Family

ID=11154644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100568A Expired - Lifetime EP0379072B1 (fr) 1989-01-17 1990-01-12 Procédé d'alimentation d'une lingotière dans un système de coulée continue et un assemblage de lingotières pour la réalisation de celle-ci

Country Status (5)

Country Link
EP (1) EP0379072B1 (fr)
AT (1) ATE125738T1 (fr)
CA (1) CA2007888A1 (fr)
DE (1) DE69021222T2 (fr)
IT (1) IT1228473B (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60174249A (ja) * 1984-02-20 1985-09-07 Nippon Cement Co Ltd 金属複合材の製造方法
JPS61229459A (ja) * 1985-04-03 1986-10-13 Mitsubishi Heavy Ind Ltd 複合鋳造ロ−ルの製造方法
DE3528649A1 (de) * 1985-08-09 1987-02-19 Schloemann Siemag Ag Vertikal- oder bogenstranggiessanlage fuer stahl
DE3640525C2 (de) * 1986-11-27 1996-02-15 Schloemann Siemag Ag Kokille zum Stranggießen von Stahlband

Also Published As

Publication number Publication date
EP0379072A3 (fr) 1992-03-04
EP0379072A2 (fr) 1990-07-25
DE69021222T2 (de) 1996-01-04
ATE125738T1 (de) 1995-08-15
CA2007888A1 (fr) 1990-07-17
IT8919107A0 (it) 1989-01-17
DE69021222D1 (de) 1995-09-07
IT1228473B (it) 1991-06-19

Similar Documents

Publication Publication Date Title
EP0149734B1 (fr) Lingotière pour la coulée continue d'un ruban d'acier
US4819840A (en) Refractory submerged pouring nozzle
US5314099A (en) Casting spout for metallurgical vessels
US3669181A (en) Pouring apparatus with submerged deflector plates for continuous casting
ZA974619B (en) Feed dip pipe for the continuous casting of thin slabs.
US5716538A (en) Discharge nozzle for continuous casting
EP0685282B1 (fr) Tube plongeur pour coulée en continu
US4619443A (en) Gas distributing tundish barrier
EP0379072B1 (fr) Procédé d'alimentation d'une lingotière dans un système de coulée continue et un assemblage de lingotières pour la réalisation de celle-ci
EP0539861B1 (fr) Lingotière courbe pour la coulée continue courbe de brames minces
US4186791A (en) Process and apparatus for horizontal continuous casting of metal
US4566526A (en) Method and apparatus for semi-horizontal continuous casting
US6165409A (en) Molten steel transfer element and its manufacturing
KR20000036232A (ko) 연속 주조기
DE60113231T2 (de) Vorrichtung und verfahren für kontinuierliches oder halbkontinuierliches giessen von aluminium
AU658981B2 (en) Process and system for vertical continuous casting of metal
SK166399A3 (en) Method and device for producing slabs
JPH08117939A (ja) 溶鋼中への気泡の吹き込み方法
Schneider et al. Process and structure for the vertical extrusion casting of metal
JP3408319B2 (ja) 偏流を防止する鋳造用ノズル
RU2691021C2 (ru) Разливочное устройство для разливки металла из промковша в изложницы
JPH0117410Y2 (fr)
US5613547A (en) Nozzle with a baffle for a caster and an associated method of casting molten metal
AU663568C (en) Method and device for pouring molten metal
EP0605087A1 (fr) Bassin de coulée pour des alliages fondus qui contiennent des parties composantes plus lourdes et insolubles

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

AK Designated contracting states

Kind code of ref document: A2

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

17P Request for examination filed

Effective date: 19920326

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: INNSE INNOCENTI ENGINEERING S.P.A.

17Q First examination report despatched

Effective date: 19930413

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: INNSE INNOCENTI ENGINEERING S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

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

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: 19950802

Ref country code: FR

Effective date: 19950802

Ref country code: BE

Effective date: 19950802

Ref country code: LI

Effective date: 19950802

Ref country code: ES

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

Effective date: 19950802

Ref country code: CH

Effective date: 19950802

Ref country code: GR

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: 19950802

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: 19950802

Ref country code: DK

Effective date: 19950802

REF Corresponds to:

Ref document number: 125738

Country of ref document: AT

Date of ref document: 19950815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69021222

Country of ref document: DE

Date of ref document: 19950907

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

Ref country code: SE

Effective date: 19951102

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960112

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: 19960131

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

Effective date: 19960112

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19971211

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971222

Year of fee payment: 9

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

Ref country code: AT

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

Effective date: 19990112

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 NON-PAYMENT OF DUE FEES

Effective date: 19991103