EP0356618B1 - Schliess- und/oder Regelorgan für den Abstich flüssiger Metallschmelze aus einem metallurgischen Gefäss - Google Patents

Schliess- und/oder Regelorgan für den Abstich flüssiger Metallschmelze aus einem metallurgischen Gefäss Download PDF

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Publication number
EP0356618B1
EP0356618B1 EP89107511A EP89107511A EP0356618B1 EP 0356618 B1 EP0356618 B1 EP 0356618B1 EP 89107511 A EP89107511 A EP 89107511A EP 89107511 A EP89107511 A EP 89107511A EP 0356618 B1 EP0356618 B1 EP 0356618B1
Authority
EP
European Patent Office
Prior art keywords
refractory
annular gap
molten metal
sealing surfaces
control element
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
EP89107511A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0356618A1 (de
Inventor
Raimund Brückner
José GIMPERA
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 AT89107511T priority Critical patent/ATE82173T1/de
Publication of EP0356618A1 publication Critical patent/EP0356618A1/de
Application granted granted Critical
Publication of EP0356618B1 publication Critical patent/EP0356618B1/de
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
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
    • 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

Definitions

  • the invention relates to a closing and / or regulating element for tapping liquid molten metal from a metallurgical vessel with an immovable refractory part and a movable refractory part that can be rotated and / or displaced relative to it in a sealing manner, both refractory parts being provided with a circular cylindrical sealing surface and both sealing surfaces are fitted into one another in a sealing manner.
  • the refractory parts are usually made of ceramic material. However, they can also be made from other, for example metallic, materials which may also be combined with one another. The only decisive factor here is that these parts are fire-proof, that is to say that they not only withstand the mechanical and chemical exposure during operation, but also the temperature-related stress caused by the molten metal.
  • Closing and / or regulating elements of this type are characterized in that they have the otherwise conventional linear and Rotary slide closures required pressing device for melt and airtight pressing the closure parts to each other can be omitted.
  • This makes it possible, on the one hand, to actuate the closing and / or regulating element with relatively low driving forces, and, on the other hand, to arrange its refractory parts in the interior of the metallurgical vessel, so that they are immersed in the molten metal during operation. This prevents the outside air from attacking the refractory parts of the closing and / or regulating member or from penetrating through the refractory parts into the molten metal.
  • the dimensioning of the annular gap between the two circular cylindrical sealing surfaces of the refractory parts is of crucial importance for the proper functioning of the closing and / or regulating element during operation.
  • the annular gap must be dimensioned such that, on the one hand, it enables the two refractory parts to move freely relative to one another during operation, and on the other hand is narrow enough to prevent the molten metal from penetrating into the region of the annular gap.
  • the various metallurgical parameters such as the nature of the molten metal, wettability of the refractory parts, liquidus temperature of the melt etc. also play a role here. a role.
  • the regulating element is provided with a larger annular gap, but this is acted upon by inert gas in order to prevent molten metal from penetrating into the annular gap.
  • the invention has for its object, in a closing and / or regulating member of the type mentioned, the width of the annular gap between the sealing surfaces of the refractory parts in terms of the above requirements for free movement of the refractory parts relative to one another on the one hand and after melt-tight closure of the closing and / or to optimize the control system on the other hand.
  • the expansion coefficients of the two refractory parts are matched to one another in such a way that, in the operating state, an annular gap which forms a still melt-tight clearance fit is established between the circular-cylindrical sealing surfaces of the two refractory parts, which in the cold state is between 0.05 mm and is 0.7 mm.
  • the annular gap between the sealing surfaces of the refractory parts as a function of the coordinated expansion coefficients of these parts, as stated above, it is possible to design the annular gap to be so wide that it remains open during the entire operating period, i.e. from the beginning of the operation to the end of the operation, the free movement of the two refractory parts to each other and still guarantees the perfect tightness of the closing and / or regulating element, because metal melt penetrating into the annular gap may remain trapped there and, with its lubricating effect, further supports the free movement of the refractory parts of the organ .
  • the closing and / or regulating element according to the invention is further characterized according to a preferred embodiment in that the expansion coefficients of both refractory parts are the same. This makes it possible to use refractory parts of the same design, which means the structural design of the refractory parts and the determination of the annular gap between their circular cylindrical sealing surfaces makes it easier. In addition, the manufacture of the closing and / or regulating member is simplified in this way.
  • the annular gap which in the operating state forms a play fit that is still melt-tight, has the same dimensions over the entire length of the two interacting circular-cylindrical sealing surfaces of the refractory parts.
  • annular gap which in the operating state forms a play fit that is still melt-tight
  • the annular gap between the refractory parts in which the opening and closing areas of the two Refractory parts lie.
  • refractory parts can be stretched as evenly as possible and also with a view to making these parts as simple as possible, it is also advantageous that they are formed as cylindrical tubes at least in the area of their interacting circular cylindrical sealing surfaces.
  • the closing and / or regulating element 1 consists of a tubular stator 2 and a likewise tubular rotor 3, both made of ceramic, refractory material.
  • the stator 2 is mortar-sealed in the refractory lining 4 of the intermediate vessel 5 in an airtight and melt-tight manner and opens into a freewheel nozzle 6 through which the molten metal flows out of the interior of the intermediate vessel 5 when the closing and / or regulating member 1 is open.
  • the rotor 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.
  • the latter 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 is applied to the holder 8 and thus to the rotor 3 of the closing and / or via the drive arm 10 and the cardan joint 9
  • Control body 1 can exercise.
  • the rotor 3 is rotatable relative to the stator 2 in both directions of rotation about the common longitudinal axis 13.
  • Both the stator 2 and the rotor 3 are each provided with two through bores 14 and 15, which are diametrically opposite one another and are aligned in the axial direction in the illustrated open position of the closing and / or regulating member 1.
  • the stator 2 and the rotor 3 are also provided in an axial region 16 each with a circular cylindrical sealing surface 17, 18, both sealing surfaces 17, 18 being fitted into one another in a sealing manner.
  • the diameter of both sealing surfaces 17, 18 are dimensioned such that an annular gap 19 is formed between the two.
  • the outer diameter of the stator 2 outside the axial area 16 was approximately 73 mm, that of the rotor 3 approximately 93 mm.
  • the inner diameters of the stator 2 and the rotor 3 were approx. 33 mm and approx. 40 mm, respectively.
  • the average diameter in the area of the annular gap 19 was approximately 63 mm.
  • stator 2 and the rotor 3 were made of the same material, so that both refractory parts had the same expansion coefficient.
  • the diameters of the sealing surfaces 17 and 18 were determined so that both diameters differed by approximately 0.4 mm when cold.
  • the annular gap 19 between the two sealing surfaces was thus approximately 0.2 mm.
  • the stator 2 was then preheated uniformly to a temperature of approximately 950 ° C. with the rotor 3.
  • the interior of the intermediate vessel 4 was then filled with steel melt to a level of 20.
  • the melt was then poured from commercially available, slightly liquid steel at a temperature of approximately 1560 ° C.
  • the rotor 3 was repeatedly rotated relative to the stator 2 in order to bring the through bores 14, 15 of both parts more or less in register and thus regulate the melt flow flowing out of the intermediate vessel 5.
  • the rotor 3 was also rotated several times until the through holes 14 and 15 were no longer in register. The passage of melt through the closing and / or regulating element 1 was thus completely interrupted.
  • the rotor 3 could be turned by hand relative to the stator 2 with little effort.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Continuous Casting (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Packages (AREA)
EP89107511A 1988-08-02 1989-04-26 Schliess- und/oder Regelorgan für den Abstich flüssiger Metallschmelze aus einem metallurgischen Gefäss Expired - Lifetime EP0356618B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89107511T ATE82173T1 (de) 1988-08-02 1989-04-26 Schliess- und/oder regelorgan fuer den abstich fluessiger metallschmelze aus einem metallurgischen gefaess.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826245A DE3826245A1 (de) 1988-08-02 1988-08-02 Schliess- und/oder regelorgan fuer den abstich fluessiger metallschmelze aus einem metallurgischen gefaess
DE3826245 1988-08-02

Publications (2)

Publication Number Publication Date
EP0356618A1 EP0356618A1 (de) 1990-03-07
EP0356618B1 true EP0356618B1 (de) 1992-11-11

Family

ID=6360094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107511A Expired - Lifetime EP0356618B1 (de) 1988-08-02 1989-04-26 Schliess- und/oder Regelorgan für den Abstich flüssiger Metallschmelze aus einem metallurgischen Gefäss

Country Status (13)

Country Link
US (1) US4966314A (fi)
EP (1) EP0356618B1 (fi)
JP (1) JP2764615B2 (fi)
KR (1) KR960013887B1 (fi)
CN (1) CN1019458B (fi)
AT (1) ATE82173T1 (fi)
BR (1) BR8903810A (fi)
CA (1) CA1340550C (fi)
DE (2) DE3826245A1 (fi)
ES (1) ES2035411T3 (fi)
GR (1) GR3006459T3 (fi)
SU (1) SU1722220A3 (fi)
ZA (1) ZA893952B (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3934601C1 (fi) * 1989-10-17 1990-10-04 Didier-Werke Ag, 6200 Wiesbaden, De
DE3934602C1 (fi) * 1989-10-17 1991-04-11 Didier-Werke Ag, 6200 Wiesbaden, De
DE3939241C2 (de) * 1989-11-28 1994-09-01 Didier Werke Ag Schließ- und/oder Regelorgan
US5230813A (en) * 1989-11-28 1993-07-27 Didier-Werke Ag Stator and rotor members for use in apparatus for closing and/or regulating the discharge or tapping of molten metal
DE19543058C2 (de) * 1995-11-10 2001-01-04 Sms Demag Ag Verfahren und Vorrichtung zum Verschließen einer Abstichöffnung
DE102009033934B3 (de) * 2009-07-20 2011-02-03 Fuchs Technology Holding Ag Abdicht- und Verfüllvorrichtung für einen metallurgischen Ofen, metallurgischer Ofen und Verfahren zum Abstechen eines metallurgischen Ofens
WO2011009579A1 (de) 2009-07-20 2011-01-27 Fuchs Technology Holding Ag Abdicht- und verfüllvorrichtung für einen metallurgischen ofen, metallurgischer ofen und verfahren zum abstechen eines metallurgischen ofens
CN106247806A (zh) * 2016-09-17 2016-12-21 天津立中汽车铝合金配件有限公司 一种用于轮毂铸造的铝液流转装置
CN106323009A (zh) * 2016-09-17 2017-01-11 天津立中汽车铝合金配件有限公司 一种轮毂铸造熔化炉铝液排放装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651998A (en) * 1970-09-23 1972-03-28 Metallurg Exoproducts Corp Nozzle for a pouring ladle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558285A1 (de) * 1921-05-15 1970-05-06 Weinreich Dr Ing Wolfgang Bodenverschluss fuer Giesspfannen
GB1380121A (en) * 1972-04-08 1975-01-08 Dyson Ltd J J Containers for molten metal
JPS5731497A (en) * 1980-08-04 1982-02-19 Metsukusu:Kk Fitting structure of raw liquid supply block or the like in filter press
SU1072995A1 (ru) * 1982-08-25 1984-02-15 Алтайский Ордена Ленина Тракторный Завод Им.М.И.Калинина Поворотный конусный огнеупорный затвор
JPS59157756U (ja) * 1983-04-04 1984-10-23 住友金属工業株式会社 タンデイツシユ
JPS617563U (ja) * 1984-06-20 1986-01-17 三建産業株式会社 連続加熱炉の嵌合スキツド
JPS61238909A (ja) * 1985-04-13 1986-10-24 Kurosaki Refract Co Ltd 溶融金属処理用ランス
DE3540202C1 (de) * 1985-11-13 1986-11-27 Brown, Boveri & Cie Ag, 6800 Mannheim Zuflußstellglied für eine Kokillenfüllstandsregelung einer Stranggießanlage
EP0302215B1 (de) * 1987-08-03 1992-12-30 Didier-Werke Ag Drehverschluss für ein metallurgisches Gefäss sowie Rotor bzw. Stator für einen solchen Drehverschluss
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651998A (en) * 1970-09-23 1972-03-28 Metallurg Exoproducts Corp Nozzle for a pouring ladle

Also Published As

Publication number Publication date
GR3006459T3 (fi) 1993-06-21
ATE82173T1 (de) 1992-11-15
JP2764615B2 (ja) 1998-06-11
US4966314A (en) 1990-10-30
CN1019458B (zh) 1992-12-16
DE3826245A1 (de) 1990-02-08
BR8903810A (pt) 1990-03-20
CA1340550C (en) 1999-05-18
DE58902680D1 (de) 1992-12-17
KR960013887B1 (ko) 1996-10-10
ZA893952B (en) 1990-02-28
CN1039748A (zh) 1990-02-21
EP0356618A1 (de) 1990-03-07
DE3826245C2 (fi) 1991-05-23
SU1722220A3 (ru) 1992-03-23
ES2035411T3 (es) 1993-04-16
JPH0270374A (ja) 1990-03-09
KR900002869A (ko) 1990-03-23

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