EP0392168B1 - Organe de fermeture et/ou de commande pour un récipient métallurgique - Google Patents

Organe de fermeture et/ou de commande pour un récipient métallurgique Download PDF

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Publication number
EP0392168B1
EP0392168B1 EP90103288A EP90103288A EP0392168B1 EP 0392168 B1 EP0392168 B1 EP 0392168B1 EP 90103288 A EP90103288 A EP 90103288A EP 90103288 A EP90103288 A EP 90103288A EP 0392168 B1 EP0392168 B1 EP 0392168B1
Authority
EP
European Patent Office
Prior art keywords
outer tube
opening
zone
control element
closure
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
EP90103288A
Other languages
German (de)
English (en)
Other versions
EP0392168A1 (fr
Inventor
Raimund Brückner
José GIMPERA
Rolf WALTENSPÜHL
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.)
Didier Werke AG
Original Assignee
Didier Werke 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 Didier Werke AG filed Critical Didier Werke AG
Priority to AT90103288T priority Critical patent/ATE83414T1/de
Publication of EP0392168A1 publication Critical patent/EP0392168A1/fr
Application granted granted Critical
Publication of EP0392168B1 publication Critical patent/EP0392168B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/14—Charging or discharging liquid or molten material

Definitions

  • the invention relates to a closing and / or regulating member for tapping molten metal from a metallurgical vessel with a stationary inner tube that has at least one opening, and with an outer tube that has an end edge that runs around the circumference of the inner tube and that is relative to the inner tube from a closed position in which the opening is covered by the outer tube, can be rotated into such an open position about the longitudinal axis of the tubes and / or can be displaced in the longitudinal axis direction, in which molten metal enters the inner tube through the opening.
  • Openings are also provided there on the outer tube. In order to allow melt to flow out of the vessel, the openings in the outer tube are brought into alignment with the openings in the inner tube.
  • the outer tube When the vessel is filled with the melt, the outer tube is in the closed position.
  • the temperature of the inner tube and the outer tube, even if the two tubes are preheated, may initially be lower than the temperature of the melt flowing into the vessel.
  • the melt can freeze in the openings in the outer tube and form plugs which are stuck in the openings in the outer tube.
  • These plugs are enclosed on the one hand by the extent of the openings in the comparatively cold and poorly heat-conducting outer tube and, on the other hand, delimited by the inner tube, which is also comparatively cold and poorly heat-conducting.
  • the plugs are only in contact with the hot melt on one surface. It has been observed in experiments that these plugs do not dissolve for a long time.
  • the object of the invention is to design the outer tube so that no melt plugs can form in openings.
  • the above object is achieved in a closing and / or regulating element of the type mentioned at the outset in that the end edge forms the following three zones: a first zone which passes over the opening when the outer tube is rotated about the longitudinal axis, and a second zone which seen in the longitudinal axis direction in the open position of the outer tube on one side of the opening, and a third zone which is seen in the longitudinal axis direction in the closed position of the outer tube on the other side of the opening.
  • the outer tube has no opening in this design.
  • the front edge of the outer tube alone opens and closes the opening or the openings of the inner tube.
  • the melt cannot freeze on the outer tube when it is poured into the vessel.
  • the melt does not freeze in the area of the front edge, since there it is largely in contact with the bulk of the melt in the vessel. Otherwise, could grafting of the melt does not adhere to the outer tube, since the front edge would adjoin such grafting only on one side and would not in any case wedge it in.
  • the movement of the outer tube also counteracts the build-up of frozen melt plugs.
  • Another advantage of the invention is that the outer tube is not weakened by openings.
  • the outer tube only has to be rotated about the common axis of rotation of the tubes to open and close the opening or the openings of the inner tube. It has been shown that this rotary movement is smooth and the outer surface of the inner tube and the inner surface of the outer tube form guide surfaces for one another and sealing surfaces which are sealed against melt passage.
  • the melt entering the inner tube can be throttled in a desired manner depending on the rotational position of the outer tube.
  • a closing and control element 1 consists of an inner tube 2 and an outer tube 3. Both are made of ceramic, refractory material.
  • the inner pipe 2 is mortared airtight and meltproof in a refractory lining 4 of an intermediate vessel 5 and opens into a free-running nozzle 6 through which metal melt flows out of the interior of the intermediate vessel 5 when the closing and / or regulating member 1 is open.
  • the inner tube 2 can also be extended as an immersion nozzle.
  • the outer tube 3 is non-rotatably connected by bolts 7 to a holder 8, which in turn is connected to a drive arm 10 via a cardan link 9.
  • This is supported on a bearing block 11 of the intermediate vessel 5 and has a lever arm 12 at its outer end, with the aid of which a torque can be exerted on the holder 8 and thus on the outer tube 3 via the drive arm 10 and the cardan joint 9.
  • the outer tube 3 can be rotated in both directions about the common longitudinal axis 13 with respect to the inner tube 2.
  • the outer tube 3 is also displaceable in the direction of its longitudinal axis.
  • the outer tube 3 can only be moved in the direction of its longitudinal axis 13.
  • the inner tube 2 is provided with at least one opening 14.
  • the outer tube 3 has an end edge 15 at its end facing away from the holder 8. It is not provided with an opening corresponding to the opening 14.
  • the inner tube 2 and the outer tube 3 form on their outer circumference in an axial region 16 sealing surfaces 17 and 18, which are fitted into one another in a melt-tight manner. There is an annular gap 19 between the sealing surfaces 17, 18.
  • the inner tube 2 is provided with only one opening 14.
  • the end edge 15 has one or two first zones 20, one of which is shown in broken lines in FIG. 2, a second zone 21 and a third zone 22.
  • the first zones 20 run obliquely between the second zone 21 and the third zone 22.
  • the zones mentioned lie on a plane oblique to the longitudinal axis 13.
  • the first zone 20 shown in broken lines or the first zone lying above the sectional plane of FIG. 2 passes over the opening 14.
  • the opening 14 is covered more or less gradually by the outer tube 3 depending on the speed of rotation and the slope of the first zone.
  • the first two zones 20 do not need to have the same and also no linear oblique course. They can be designed in such a way that the opening 14 is covered more quickly at the same angles of rotation in one direction than at the same angles of rotation in the other direction of rotation.
  • the outer tube 3 When filling the melt into the empty intermediate vessel 5, the outer tube 3 is brought into its closed position.
  • the inner tube 2 and the outer tube 3 are colder than the filled melt.
  • the end edge 15 with its zones 20, 21, 22 is open to the melt and does not include any melt regions that could otherwise freeze into grafts on the outer tube 3.
  • Current, regional partial freezes dissolve under the action of the contacting melt, which is supported by the pushing movement of the first zone 20 when the outer tube 3 is rotated.
  • the outer tube 3 can thus, when the desired level of the melt in the intermediate vessel 5 is reached, be brought into its open position immediately, the outflow of the melt through the opening 14 not being hindered by frozen regions.
  • the end edge 15 itself runs radially to the longitudinal axis 13 in its individual zone 20, 21, 22.
  • the end edge 15 in such a way that it is in one, several or all zones 20, 21, 22 lies at an angle W1 or W2 obliquely to the longitudinal axis 13.
  • the angles W1 and W2 in zones 20, 21 can influence the inflow conditions of the melt into the opening 14.
  • the angle W2 of the third zone 22 ensures that the melt does not enter an acute-angled or right-angled, but rather an obtuse-angled region when it is filled into the vessel, which further reduces the risk of freezing.
  • the inner tube 2 has two diametrically opposite openings 14. Accordingly, the first, second and third zones 20, 21, 22 are provided in pairs on the front edge 15. In Figures 4 and 5 possible courses of the end edge 15 are shown unwound. In Figure 3 and corresponding to Figures 4 and 5, the opening position of the outer tube 3 is shown. Zone 21 lies above openings 14 so that they are open.
  • zones 20 each run at an obtuse angle to zone 21, from which they merge into zone 22. They each have the same obtuse angle to zone 21 or 22. It is thereby achieved that when the outer tube 3 is rotated, the two openings 14 are closed at the same speed, regardless of whether the outer tube 3 is rotated in the direction of arrow r or in the direction of arrow l (see FIG. 4) with respect to the inner tube 2 . If the outer tube 3 is rotated by 90 ° with respect to the closed position, then both openings 14 are closed, the zones 22 then being below the openings 14.
  • a forward run of the closing of one opening 14 with respect to the other opening 14 could be achieved in that the openings 14 or the zones 21 are offset from one another at the circumference, deviating from 180 °.
  • the same design of the zones 20 in both directions of rotation l, r has the advantage that if, after prolonged operation of the outer tube 3 in one direction of rotation, the zones 20 to the left of the openings 14 should be worn, the operation takes place in the other direction of rotation can, so that the zones 20 to the right of the opening 14 are worn out can be changed without changing the outflow behavior, based on the respective angle of rotation of the outer tube 3.
  • the first zones 20, which in the open position are on both sides of each of the two openings 14, run at different angles. It is thereby achieved that when the outer tube 3 is rotated in the direction of the arrow 1, the openings 14 are closed more quickly than when the outer tube 3 is rotated in the direction of the arrow r.
  • the outer tube 3 can be displaced by a stroke H parallel to the longitudinal axis 13.
  • This stroke H is dimensioned such that the outer tube 3, when it is in its open position, that is to say the second zones 21 lie above the openings 14, can be depressed so far in the direction of the arrow N that the second zones 21 of the end edge 15 then stand below the openings 14. This is favorable for malfunctions in which the outer tube 3 can no longer be rotated about the longitudinal axis 13.
  • the openings 14 can be closed in this case.
  • an inner surface 23 of the outer tube 3 closes the inner tube 2, which is open at the top.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Pipe Accessories (AREA)
  • Forging (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Packages (AREA)

Claims (8)

  1. Organe de fermeture et/ou de réglage pour la coulée d'un bain de métal liquide contenu dans une cuve métallurgique comportant un tube intérieur fixe muni d'au moins un passage et un tube extérieur muni d'un bord d'attaque qui s'étend sur le pourtour du tube intérieur et peut être amené par rotation autour de l'axe longitudinal des tubes et/ou par déplacement dans la direction de l'axe longitudinal, par rapport au tube intérieur, d'une position de fermeture dans laquelle le passage est fermé par le tube extérieur dans une position d'ouverture dans laquelle le bain de métal pénètre dans le passage du tube intérieur, caractérisé par le fait que le bord d'attaque (15) délimite les trois zones suivantes:
    une première zone (20) qui, lors de la rotation du tube extérieur (3) autour de l'axe longitudinal (13) passe devant le passage (14), une deuxième zone (21) qui, lorsque le tube extérieur (3) est en position d'ouverture, est située d'un côté du passage (14), vu dans la direction de l'axe longitudinal, ainsi qu'une troisième zone (22) qui, lorsque le tube extérieur (3) est en position de fermeture, est situé de l'autre côté du passage (14), vu dans la direction de l'axe longitudinal (figures 2 à 5).
  2. Organe de fermeture et/ou de réglage selon la revendication 1, caractérisé par le fait que le bord d'attaque (15) s'étend dans un plan incliné par rapport à l'axe longitudinal (13) (figure 2).
  3. Organe de fermeture et/ou de réglage selon la revendication 1, caractérisé par le fait que les premières zones (20) se raccordent à la deuxième zone (21) et à la troisième zone (22) en formant un angle obtus.
  4. Organe de fermeture et/ou de réglage selon la revendication 3, caractérisé par le fait que les premières zones (20) se raccordent à la deuxième zone (21) et/ou à la troisième zone (22) par des angles obtus identiques (figure 4).
  5. Organe de fermeture et/ou de réglage selon la revendication 3, caractérisé par le fait que les premières zones (20) se raccordent à la deuxième zone (21) et/ou à la troisième zone (22) par des angles obtus différents (figure 5).
  6. Organe de fermeture et/ou de réglage selon l'une des revendications 1 à 5, caractérisé par le fait que la pente de la première zone (20) forme une courbe de commande pour l'entrée de la masse fondue dans le passage (14) en fonction de l'angle de rotation du tube extérieur (3).
  7. Organe de fermeture et/ou de réglage selon l'une des revendications 1 à 6, caractérisé par le fait que le tube extérieur (3) peut être déplacé dans la direction de l'axe longitudinal à partir de la position d'ouverture de manière telle que la deuxième zone (21) du bord d'attaque (15) soit située au-delà du passage (14) (figure 3).
  8. Organe de fermeture et/ou de réglage selon l'une des revendications 1 à 7, caractérisé par le fait que, dans les zones (20, 21, 22), le bord d'attaque (15) s'étend au moins sous un angle (W1, W2) par rapport à des plans radiaux de la direction de l'axe longitudinal (13).
EP90103288A 1989-04-11 1990-02-21 Organe de fermeture et/ou de commande pour un récipient métallurgique Expired - Lifetime EP0392168B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90103288T ATE83414T1 (de) 1989-04-11 1990-02-21 Schliess- und/oder regelorgan fuer ein metallurgisches gefaess.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911736A DE3911736C2 (de) 1989-04-11 1989-04-11 Schließ- und/oder Regelorgan für ein metallurgisches Gefäß
DE3911736 1989-04-11

Publications (2)

Publication Number Publication Date
EP0392168A1 EP0392168A1 (fr) 1990-10-17
EP0392168B1 true EP0392168B1 (fr) 1992-12-16

Family

ID=6378356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103288A Expired - Lifetime EP0392168B1 (fr) 1989-04-11 1990-02-21 Organe de fermeture et/ou de commande pour un récipient métallurgique

Country Status (13)

Country Link
US (1) US5223157A (fr)
EP (1) EP0392168B1 (fr)
JP (1) JPH02293591A (fr)
KR (1) KR0169722B1 (fr)
CN (1) CN1019759B (fr)
AT (1) ATE83414T1 (fr)
BR (1) BR9001662A (fr)
CA (1) CA2014245A1 (fr)
DE (2) DE3911736C2 (fr)
ES (1) ES2037486T3 (fr)
GR (1) GR3006888T3 (fr)
RU (1) RU2016698C1 (fr)
ZA (1) ZA902152B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926678C2 (de) * 1989-08-12 1994-09-01 Didier Werke Ag Schließ- und Regelorgan für ein metallurgisches Gefäß
US5939016A (en) * 1996-08-22 1999-08-17 Quantum Catalytics, L.L.C. Apparatus and method for tapping a molten metal bath
US5855835A (en) * 1996-09-13 1999-01-05 Hewlett Packard Co Method and apparatus for laser ablating a nozzle member
KR100364195B1 (ko) * 2000-06-12 2002-12-11 한국기계연구원 엑사이머 레이저빔을 이용한 3차원 형상을 갖는 물품의 제조방법 및 제조장치
NO315031B1 (no) * 2002-02-06 2003-06-30 Sigmund Rekkedal Doseringsventil med eksentrisk åpnerfunksjon med kraftmoment for gravitasjonsstöping av flytende metall
KR100832771B1 (ko) * 2007-11-05 2008-05-27 주식회사 케너텍 축열컨테이너
CN104197722B (zh) * 2014-08-28 2016-03-23 南京理工大学连云港研究院 一种控制熔融炉中熔融物流速的出料装置
CN109967754A (zh) * 2019-05-09 2019-07-05 广东仁开科技有限公司 一种高温锡熔体的在线导流开闭系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB670729A (en) * 1949-06-10 1952-04-23 Clifford Harry Armstrong Improvements in and relating to valves
US3651998A (en) * 1970-09-23 1972-03-28 Metallurg Exoproducts Corp Nozzle for a pouring ladle
FR2367568A1 (fr) * 1976-10-14 1978-05-12 Daussan & Co Dispositif de prechauffage pour repartiteurs de coulee a obturateurs
US4279266A (en) * 1980-04-23 1981-07-21 Halliburton Company Sleeve valve
DE3423157C1 (de) * 1984-06-22 1985-06-20 Metacon AG, Zürich Feuerfestes Plattenpaar fuer schwenk- bzw. drehbewegliche Schiebeverschluesse
DE3540202C1 (de) * 1985-11-13 1986-11-27 Brown, Boveri & Cie Ag, 6800 Mannheim Zuflußstellglied für eine Kokillenfüllstandsregelung einer Stranggießanlage
DE3731600A1 (de) * 1987-09-19 1989-04-06 Didier Werke Ag Drehschiebeverschluss fuer ein metallurigsches gefaess sowie rotor und/oder stator fuer einen solchen drehverschluss
DE3809072A1 (de) * 1988-03-18 1989-09-28 Didier Werke Ag Dreh- und/oder schieberverschluss und dessen verschlussteile

Also Published As

Publication number Publication date
CN1046300A (zh) 1990-10-24
DE3911736C2 (de) 1994-02-24
ES2037486T3 (es) 1993-06-16
BR9001662A (pt) 1991-05-14
JPH02293591A (ja) 1990-12-04
CN1019759B (zh) 1992-12-30
EP0392168A1 (fr) 1990-10-17
DE3911736A1 (de) 1990-10-18
ZA902152B (en) 1990-12-28
KR0169722B1 (ko) 1999-01-15
GR3006888T3 (fr) 1993-06-30
DE59000590D1 (de) 1993-01-28
ATE83414T1 (de) 1993-01-15
US5223157A (en) 1993-06-29
CA2014245A1 (fr) 1990-10-11
KR900015842A (ko) 1990-11-10
RU2016698C1 (ru) 1994-07-30

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