EP0030910A1 - Tauchrohre für elektrorotierendes Stranggiessen von Metallen - Google Patents

Tauchrohre für elektrorotierendes Stranggiessen von Metallen Download PDF

Info

Publication number
EP0030910A1
EP0030910A1 EP80630055A EP80630055A EP0030910A1 EP 0030910 A1 EP0030910 A1 EP 0030910A1 EP 80630055 A EP80630055 A EP 80630055A EP 80630055 A EP80630055 A EP 80630055A EP 0030910 A1 EP0030910 A1 EP 0030910A1
Authority
EP
European Patent Office
Prior art keywords
blades
nozzles according
metal
central tube
mold
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
EP80630055A
Other languages
English (en)
French (fr)
Other versions
EP0030910B1 (de
Inventor
Paul Metz
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Priority to AT80630055T priority Critical patent/ATE4965T1/de
Publication of EP0030910A1 publication Critical patent/EP0030910A1/de
Application granted granted Critical
Publication of EP0030910B1 publication Critical patent/EP0030910B1/de
Expired 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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/507—Pouring-nozzles giving a rotating motion to the issuing 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
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields

Definitions

  • the present invention relates to plunging nozzles used in electrorotative continuous casting of liquid metals, in particular steel.
  • the rotation of the liquid metal has certain advantages compared to static casting, in particular that of bringing a favorable modification to the solidification structure by eliminating the basaltic zone in favor of a finer solidification structure.
  • the most rational way to carry out the stirring or the rotation of the metal not yet solidified, as well at the level of the ingot mold as in the zone of the secondary cooling, consists in putting the metal in movement by mechanical, pneumatic way or with l using an electromagnetic field.
  • the latter can be created by one or more inductors that are positioned around the mold or even below it, to generate fields of specific configurations.
  • the inclusions tend to collect in the area of the axis of the bar and to be sucked into the liquid metal under the effect of the vortex. creates. Jn thereby obtains a product having an axial zone with too high a concentration of inclusions.
  • the object of the invention therefore consisted in imagining and developing a device allowing the conduct of a continuous electrorotative casting with protection of the metal surface by slag, while avoiding the risks described which are linked to the vortex effect due when the metal rotates in the mold.
  • plunging nozzles which consist in particular of a central tube comprising an upper part in which the casting jet ends and a lower part which plunges into the liquid metal and which are characterized in that they include blades, radial with respect to the axis of the ingot mold, which blades press against the central tube and at least partially plunge under the surface of the liquid metal.
  • the idea which is the basis of the present invention consists in using a device which does not significantly hamper the actual rotation of the liquid metal continuously cast, while opposing a mechanical brake to the area which includes the surface of the metal on which a slag or protective slag floats.
  • This mechanical brake therefore acts in particular on the area of the metal-slag interface in the sense that it immobilizes the latter, which prevents the formation of a vortex due to the rotation of the liquid metal, and thereby eliminates the entrainment within the metal of non-metallic particles.
  • a nozzle which has 4 blades extending either towards the middle of the 4 walls of the ingot mold, or towards the 4 corners thereof.
  • the dimensions of the blades are chosen according to the arrangement of the nozzle in the mold so that the ends of the blades are close to the walls or corners of the mold, but do not touch them. It has been found advantageous to size the blades so that the length of the blade together (-2 blades + diameter of the nozzle tube) corresponds to 50 - 95% of the length, resp. of the width or even to the diagonal of the mold. It is understood that the length of the blades will be limited depending on the flowability of the metal, to avoid solidification of the latter in the area of the surface of the bath.
  • a first embodiment of the nozzles according to the invention provides blades in the form of a parallelepiped, while according to a second embodiment the blades may have fins which touch the central tube of the nozzle and which are directed towards the bottom. These fins help to slow down the rotation of the metal in the critical zone i.e. at the metal-slag interface as well as below said zone.
  • a third embodiment provides fins which have a helical shape directed upside down in the direction of the rotary movement which is printed on the liquid metal.
  • the nozzles can also be provided, according to a particularly advantageous embodiment, with a mechanical drive system which imparts to them a rotational movement in the opposite direction to that which is caused to be carried out with liquid metal. .
  • the nozzles according to the invention can on the one hand be in one piece. On the other hand it is possible to mount the blades individually on a ring that surrounds the central tube of a conventional nozzle. This second possibility brings a certain flexibility and savings since it allows the use of ordinary known nozzles.
  • FIG. 1 shows a view from above on a nozzle according to the invention
  • FIG. 2 shows a side section through the same nozzle
  • FIGS. 3 and 4 show side sections of nozzles which have blades with straight fins resp. helical.
  • FIG. 1 In fig. 1 is shown the section of an ingot mold (1 a) resp. (1 b) in which there is a nozzle according to the invention, which comprises a central pipe (2) and 4 blades (3).
  • the distance from the end of a blade facing a wall of the mold (1 a) can be less than the distance between the end of a blade and a corner of the mold (1 b) , due to the fact that there can be less eddy in the areas of the corners of the molds than in the areas along the middle parts of the walls.
  • Fig. 4 shows a nozzle having blades (3) with fins (5) of helical shape. This helical shape is usefully directed upside down in the direction of rotation (R) of the metal, so that the slag particles are pushed up during the rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP80630055A 1979-12-17 1980-11-26 Tauchrohre für elektrorotierendes Stranggiessen von Metallen Expired EP0030910B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80630055T ATE4965T1 (de) 1979-12-17 1980-11-26 Tauchrohre fuer elektrorotierendes stranggiessen von metallen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU82001A LU82001A1 (fr) 1979-12-17 1979-12-17 Busettes plongeantes utilisees en coulee continue electrorotative de metaux
LU82001 1979-12-17

Publications (2)

Publication Number Publication Date
EP0030910A1 true EP0030910A1 (de) 1981-06-24
EP0030910B1 EP0030910B1 (de) 1983-10-12

Family

ID=19729313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80630055A Expired EP0030910B1 (de) 1979-12-17 1980-11-26 Tauchrohre für elektrorotierendes Stranggiessen von Metallen

Country Status (6)

Country Link
US (1) US4387761A (de)
EP (1) EP0030910B1 (de)
AT (1) ATE4965T1 (de)
CA (1) CA1153864A (de)
DE (1) DE3065321D1 (de)
LU (1) LU82001A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108247033A (zh) * 2018-01-17 2018-07-06 武汉科技大学 一种连铸中间包用旋流上水口
EP3900855A1 (de) * 2020-04-21 2021-10-27 Refractory Intellectual Property GmbH & Co. KG Drehbarer einsatz und tauchdüse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX395171B (es) * 2015-07-02 2025-03-19 Vesuvius U S A Corp Modificador de salida de artesa.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1802884A1 (de) * 1968-10-12 1970-06-18 Demag Ag Verfahren zum Zufuehren des Giessmetalls in die Durchlaufgiessform einer Metall-,insbesondere Stahl-Stranggiessanlage und Giessmetallzufuehrungsvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB748709A (en) * 1953-06-22 1956-05-09 Siegfried Junghans Improvements in or relating to a method of continuously casting metals by means of cooled throughflow moulds
CA887556A (en) * 1968-12-12 1971-12-07 Exothermic Company Of Canada Limited Method and apparatus for providing slag for continuous casting molds
LU63813A1 (de) * 1971-09-01 1973-03-09
JPS4846534A (de) * 1971-10-16 1973-07-03
BE790371A (fr) * 1971-10-21 1973-02-15 Voest Ag Tube de coulee refractaire pour le coulage en continu de metauxen fusion

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1802884A1 (de) * 1968-10-12 1970-06-18 Demag Ag Verfahren zum Zufuehren des Giessmetalls in die Durchlaufgiessform einer Metall-,insbesondere Stahl-Stranggiessanlage und Giessmetallzufuehrungsvorrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108247033A (zh) * 2018-01-17 2018-07-06 武汉科技大学 一种连铸中间包用旋流上水口
CN108247033B (zh) * 2018-01-17 2020-07-21 武汉科技大学 一种连铸中间包用旋流上水口
EP3900855A1 (de) * 2020-04-21 2021-10-27 Refractory Intellectual Property GmbH & Co. KG Drehbarer einsatz und tauchdüse
WO2021214070A2 (en) 2020-04-21 2021-10-28 Refractory Intellectual Property Gmbh & Co. Kg Submerged nozzle with rotatable insert

Also Published As

Publication number Publication date
US4387761A (en) 1983-06-14
DE3065321D1 (en) 1983-11-17
LU82001A1 (fr) 1981-07-23
ATE4965T1 (de) 1983-10-15
CA1153864A (fr) 1983-09-20
EP0030910B1 (de) 1983-10-12

Similar Documents

Publication Publication Date Title
FR2565860A1 (fr) Plaque refractaire et buse de coulee et procede de montage de plaques refractaires dans une vanne coulissante
FR2499229A1 (fr) Dispositif pour boucher le trou de coulee d'un recipient metallurgique
EP0847821A1 (de) Beschickbehälter für die Aufnahme schmelzflüssigen Metalls, insbesondere Stahlschmelzen
LU85846A1 (fr) Dispositif de brassage de metal en fusion dans une installation de coulee continue
EP0030910B1 (de) Tauchrohre für elektrorotierendes Stranggiessen von Metallen
FR2632549A1 (fr) Lingotiere pour la coulee continue de billettes ou de blooms
EP0907439B1 (de) Vertikal-stranggiesskokille mit aufsatz
EP0904170B1 (de) Vertikal stranggusskokille mit aufsatz
EP0778098B1 (de) Elektromagnetische Rühreinrichtung für das Stranggiessen
FR2655282A1 (fr) Dispositif de raccordement d'un tube de coulee a la busette de coulee d'un recipient contenant du metal en fusion.
BE1004078A3 (fr) Dispositif antivortex adaptable aux trous de coulees de poches de coulee.
JP3400936B2 (ja) 鋳込取鍋
EP0203979A1 (de) Verbesserungen an giesspfannen für flüssige metalle.
EP0498684B1 (de) Ausstosseinrichtung für eine Giessschutzrohr-Trageinrichtung in eine Stranggiessvorrichtung
LU85443A1 (fr) Perfectionnement aux dispositifs d'orifice de coulee de recipients metallurgiques
EP0473499B1 (de) Verfahren und Einrichtung für ein Strahlschutzrohr beim Stranggiessen
BE1002828A6 (fr) Dispositif de controle de l'ecoulement du metal dans un panier repartiteur de coulee continue.
FR2825967A1 (fr) Dispositif de parking pour bicyclette
BE1000227A6 (fr) Dispositif permettant de couler un metal en phase pateuse.
LU83988A1 (fr) Lingotieres de coulee continue
CH629127A5 (en) Continuous-casting method
WO2007065983A1 (fr) Dispositif de brassage electromagnetique de metal liquide pour ligne de coulee continue
LU87752A1 (fr) Amelioration aux dispositifs servant a faire ecouler du metal en fusion
FR2651160A1 (fr) Procede et dispositif pour couler des barres metalliques ou analogues.
BE525282A (de)

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

Designated state(s): AT BE CH DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19811007

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

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

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

Ref country code: SE

Effective date: 19831012

Ref country code: NL

Effective date: 19831012

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: 19831012

Ref country code: AT

Effective date: 19831012

REF Corresponds to:

Ref document number: 4965

Country of ref document: AT

Date of ref document: 19831015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3065321

Country of ref document: DE

Date of ref document: 19831117

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

Ref country code: LI

Effective date: 19831130

Ref country code: CH

Effective date: 19831130

Ref country code: BE

Effective date: 19831130

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: FR

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

Effective date: 19840731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19840801

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

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118