EP0352353B1 - Brique porte-busette d'une poche pour un obturateur d'une poche de coulée - Google Patents

Brique porte-busette d'une poche pour un obturateur d'une poche de coulée Download PDF

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Publication number
EP0352353B1
EP0352353B1 EP88112240A EP88112240A EP0352353B1 EP 0352353 B1 EP0352353 B1 EP 0352353B1 EP 88112240 A EP88112240 A EP 88112240A EP 88112240 A EP88112240 A EP 88112240A EP 0352353 B1 EP0352353 B1 EP 0352353B1
Authority
EP
European Patent Office
Prior art keywords
ladle
funnel section
nozzle brick
filling compound
pan
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
EP88112240A
Other languages
German (de)
English (en)
Other versions
EP0352353A1 (fr
Inventor
Günter Wachs
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.)
Intracon Handelsgesellschaft fur Industriebedarf Mbh
Original Assignee
Intracon Handelsgesellschaft fur Industriebedarf Mbh
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 Intracon Handelsgesellschaft fur Industriebedarf Mbh filed Critical Intracon Handelsgesellschaft fur Industriebedarf Mbh
Priority to ES88112240T priority Critical patent/ES2023471B3/es
Priority to DE8888112240T priority patent/DE3862760D1/de
Priority to EP88112240A priority patent/EP0352353B1/fr
Priority to AT88112240T priority patent/ATE63246T1/de
Publication of EP0352353A1 publication Critical patent/EP0352353A1/fr
Application granted granted Critical
Publication of EP0352353B1 publication Critical patent/EP0352353B1/fr
Priority to GR91400307T priority patent/GR3002029T3/el
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
    • B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
    • 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
    • B22D41/44—Consumable closure means, i.e. closure means being used only once
    • B22D41/46—Refractory plugging masses
    • B22D41/465—Unplugging a vessel discharge port

Definitions

  • the invention relates to a ladle brick for the closure device of a ladle according to the preamble of claim 1.
  • pans for liquid steel consist of a sheet metal jacket which is lined on the inside (wall and floor) with refractory material.
  • the bottom is provided, inter alia, with at least one opening through it a refractory insert is delimited as shown in FIG. 1.
  • This part 1 is called “pan perforated brick” or “perforated brick” for short and can be molded directly in the pan during the lining of the pan, or can preferably be used as a monolithic finished part during delivery. Its dimensions and hole diameter depend on the pan size and its refractory quality depends on the requirements of the operator.
  • the outflow opening 6 of the Pfannenlochstein 1 is filled with a filling compound 5 of different grain size and composition, so that the filling compound is well distributed and forms a hill, which is indicated in FIG. 2 of the accompanying drawing with reference 16 .
  • the filling compound 5 can be introduced into the pan both from the inside and from the outside.
  • the steel introduced into the ladle solidifies on the cold or preheated filling compound 5, the melting temperature of which is much higher than that of the liquid steel, thereby preventing the steel from infiltrating into the outflow opening.
  • the liquid metal remains in the pan for between 10 and 30 minutes. The thermal equilibrium has not yet been reached in this period.
  • the temperature of the filling compound 5 is not yet homogeneous and therefore opening the pan slide 12, 13 is sufficient to let the filling compound trickle out under the weight of the metal and to release the pouring jet.
  • the pan opening can be cleared by blowing oxygen with a lance which is inserted from bottom to top through the previously opened slide closure 12, 13 into the clogged opening of the pan hole brick 1.
  • the invention has for its object to provide an opening device for steel ladles that can be operated without manual intervention even after long treatment and dwell times of the liquid steel in the ladle.
  • the ladle hole brick for the closure device of a ladle is designed in such a way that the funnel section is asymmetrical with respect to at least one imaginary cutting plane lying in the axis of the outflow channel.
  • the asymmetrical funnel section preferably has an approximately egg-shaped or oval shape.
  • cross-sectional shapes that are circular in shape and tapered in the other half or otherwise asymmetrical are also possible.
  • the conventional ladle slide closure shown in FIG. 2, with a square or round ladle perforated brick 1, for example in plan view, has an axis-rotation-symmetrical passage opening formed by two double cones, the wider base areas of which are arranged on the one hand at the upper hopper section 4 to the ladle and on the other hand at the bottom of the lower hopper 3.
  • a sleeve 8 made of refractory material is anchored in a known manner, for example by means of refractory putty or mortar 21.
  • the central outflow is indicated with reference note 6.
  • the upper funnel section 4, the inlet area of the perforated brick 1, is filled with the filling compound 5 in the manner already described.
  • the shell of the ladle is given with reference 7.
  • the introduction of purge gases via a gas connection 11 and a gas-permeable sleeve part 9 on the one hand and via a gas connection 14 and / or a gas connection 17 and gas-permeable inserts 15 and 18 is also known, but in Connection possible with the invention not of further interest.
  • a known interchangeable nozzle is given with reference note 10.
  • the pan hole brick 1 according to FIG. 3 can be cylindrical in a known manner or square in cross-section, the dimensions of the axial height H or the diameter or the edge length D can be chosen arbitrarily and according to the requirements of the respective ladle.
  • the upper funnel section 4 of the outflow channel 6 of the ladle hole brick 1, which runs from a narrowest point 2 upwards (in the direction of the pan, arrow direction A), is represented by the intersection lines of two or more inclined or curved planes, for example as shown in FIG. 3 formed by conical or egg surfaces, ie in plan view there is a cross-sectional area of the funnel section 4, which is composed of two unequal halves, each half being delimited by straight, preferably tapering or preferably curved lines.
  • the two halves of the funnel section 4 are thus designed asymmetrically with respect to an imaginary cutting plane which runs vertically through the axis of the outflow channel 6 in the (lower) illustration of FIG. 3.
  • the asymmetry of the hollow of the funnel section 4 formed in this way prevents a stable bridging of the sintered filling compound 5 by asymmetrical distribution of the pressure forces acting on the ladle hole brick 1.
  • a parabolic or hyperbolic design of one half of the shown upwardly widening funnel section 4, while the other left half is semicircular with a cylindrical or as shown with a conical (semi-cone), tapering wall surface.
  • the vertices of the parabolic surfaces running horizontally in the (lower) plan view of FIG. 3 form an angle ⁇ to the vertical, which in principle can vary in the range between 0 and 90 °, but will be in the range between 0 and 60 ° with exclusion the angle which is assigned to the left half of the funnel section 4 in the illustration.
  • ⁇ the angle which is assigned to the left half of the funnel section 4 in the illustration.
  • the vertices of the hyperbolas in this case lie on a line parallel to the perpendicular.
  • the approximately egg-shaped cross-sectional shape of FIG. 3 or the oval cross-sectional shape of FIG. 4 are preferred because of the ease of manufacture.
  • one half of the funnel section 4 is also parabolic in plan view, the other hyperbolic. It does not need to be the corresponding mathematically correct surface or curve shapes; the decisive factor is rather the asymmetry of the cross section itself, so that the production of the perforated brick 1 is also not critical with regard to tolerances of the internal dimensions.
  • the hill 16 of the filling compound 5 (cf. FIG. 2) has a high strength according to the principle of a dome or a self-supporting archway, in particular during sintering also against the pressure of the liquid steel acting from above the asymmetrical design of the funnel section 4 results in a desired non-uniform pressure distribution, which, even when the filler 5 is sintered, causes the resulting filler bridge to break when the slide closure is opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Food-Manufacturing Devices (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Manipulator (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Claims (3)

1. Brique de poche perforée (1) pour le dispositif d'obturation d'une poche de coulée dont le canal d'écoulement vertical (6) comporte une section d'entonnoir supérieure (4) qui s'évase de préférence vers l'intérieur de la poche de coulée et est remplie, avant le remplissage et jusqu'à la coulée du métal en fusion dans la poche de coulée, d'une masse de remplissage (5) résistant à la chaleur, caractérisée en ce que la section d'entonnoir (4) présente une forme asymétrique par rapport à au moins un plan de coupe imaginaire (20) placé dans l'axe du canal d'écoulement.
2. Brique de poche perforée selon la revendication 1, caractérisée en ce que la section d'entonnoir (4) asymétrique présente, dans une vue de dessus et dans un plan de coupe transversal perpendiculaire à la verticale, un contour formé d'une part par une ligne d'intersection parabolique ou hyperbolique et d'autre part par une ligne d'intersection sensiblement en arc de cercle.
3. Brique de poche perforée selon la revendication 1, caractérisée en ce que la section d'entonnoir (4) asymétrique présente, dans une vue de dessus et dans un plan de coupe transversal, un contour sensiblement ovale ou elliptique, et que le canal d'écoulement (6) se situe à l'extérieur du milieu du grand axe de l'ovale et respectivement de l'ellipse.
EP88112240A 1988-07-28 1988-07-28 Brique porte-busette d'une poche pour un obturateur d'une poche de coulée Expired - Lifetime EP0352353B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES88112240T ES2023471B3 (es) 1988-07-28 1988-07-28 Ladrillo hueco para el dispositivo taponador de una cuchara de colada
DE8888112240T DE3862760D1 (de) 1988-07-28 1988-07-28 Pfannenlochstein fuer die verschlussvorrichtung einer giesspfanne.
EP88112240A EP0352353B1 (fr) 1988-07-28 1988-07-28 Brique porte-busette d'une poche pour un obturateur d'une poche de coulée
AT88112240T ATE63246T1 (de) 1988-07-28 1988-07-28 Pfannenlochstein fuer die verschlussvorrichtung einer giesspfanne.
GR91400307T GR3002029T3 (en) 1988-07-28 1991-05-30 Ladle nozzle brick for a closure device of a ladle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88112240A EP0352353B1 (fr) 1988-07-28 1988-07-28 Brique porte-busette d'une poche pour un obturateur d'une poche de coulée

Publications (2)

Publication Number Publication Date
EP0352353A1 EP0352353A1 (fr) 1990-01-31
EP0352353B1 true EP0352353B1 (fr) 1991-05-08

Family

ID=8199150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112240A Expired - Lifetime EP0352353B1 (fr) 1988-07-28 1988-07-28 Brique porte-busette d'une poche pour un obturateur d'une poche de coulée

Country Status (5)

Country Link
EP (1) EP0352353B1 (fr)
AT (1) ATE63246T1 (fr)
DE (1) DE3862760D1 (fr)
ES (1) ES2023471B3 (fr)
GR (1) GR3002029T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9108038D0 (en) * 1991-04-16 1991-06-05 Forgemaster Steels Limited Improved taphole design and method
DE4338859A1 (de) * 1993-11-13 1995-05-18 Didier Werke Ag Verteilergefäß und Auslaufblock für dieses
DE19750039C1 (de) * 1997-11-12 1998-09-03 Veitsch Radex Ag Monolithischer, feuerfester, keramischer Lochstein
DE19925598A1 (de) * 1999-06-04 2000-12-07 Sms Demag Ag Abstichkanal für Schmelzöfen und Gießpfannen
KR100776043B1 (ko) 2006-12-22 2007-11-16 주식회사 포스코 비대칭형 용탕인출용 노즐
DE102007044126A1 (de) * 2007-09-15 2009-04-02 Refractory Intellectual Property Gmbh & Co. Kg Feuerfester keramischer Lochstein
CN110170641B (zh) * 2019-06-04 2021-05-11 甘肃酒钢集团宏兴钢铁股份有限公司 一种方坯双曲线型浸入式水口及其制作方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1859007U (de) * 1958-07-16 1962-09-27 Edgar Dr Hagenburger Ausguss fuer gusspfannen.
DE6603834U (de) * 1965-05-06 1969-11-27 Stal Laval Apparat Ab Vorrichtung zum abstechen von geschmolzenem metall

Also Published As

Publication number Publication date
DE3862760D1 (de) 1991-06-13
ATE63246T1 (de) 1991-05-15
ES2023471B3 (es) 1992-01-16
GR3002029T3 (en) 1992-12-30
EP0352353A1 (fr) 1990-01-31

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