EP1049551B1 - Recipient pour coulee metallurgique - Google Patents

Recipient pour coulee metallurgique Download PDF

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Publication number
EP1049551B1
EP1049551B1 EP99902542A EP99902542A EP1049551B1 EP 1049551 B1 EP1049551 B1 EP 1049551B1 EP 99902542 A EP99902542 A EP 99902542A EP 99902542 A EP99902542 A EP 99902542A EP 1049551 B1 EP1049551 B1 EP 1049551B1
Authority
EP
European Patent Office
Prior art keywords
lining
mould
base
melt
ladle
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
EP99902542A
Other languages
German (de)
English (en)
Other versions
EP1049551A1 (fr
Inventor
Markus Schwan
Dieter Lobemeier
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.)
INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel
Original Assignee
INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel
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 INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel filed Critical INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel
Publication of EP1049551A1 publication Critical patent/EP1049551A1/fr
Application granted granted Critical
Publication of EP1049551B1 publication Critical patent/EP1049551B1/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
    • B22D41/02—Linings
    • B22D41/023—Apparatus used for making or repairing linings
    • 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
    • B22D41/003—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with impact pads
    • 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

Definitions

  • the invention relates to a during manufacture of a container usable for metallurgical melts Shape.
  • Ladles used as an example of such Containers are to be understood.
  • the ladles are lined with refractory materials, whose tasks consist of the steel jacket of the ladle in front of the to protect hot melt and through an insulating Effect to minimize the temperature loss of the molten metal.
  • the refractory lining against which the aggressive melt is at a high temperature do not release any components into the melt that would contaminate them.
  • the ladle developed to an essential factor of secondary metallurgical Treatment of the steel. This includes washing in Inert gases to produce a stirring effect in the melt, blowing in aids such as lime dust for desulfurization, introduction and melting of alloying elements and improving the degree of purity the molten steel.
  • EP 429 323 A1 allows a similar embodiment recognize inclined floor, although in the graphic Representation has a homogeneous cross section whose type or structure is not said.
  • the fireproof lining is there Embodiment made of molded refractory products.
  • molded refractory products are made by pressing Stones, usually of a standardized format, and components formed by casting, stamping or vibrating a custom format.
  • the contact areas of the Stones among themselves are possibly fireproof Spread mortar.
  • With different formats / components existing refractory lining of a steel ladle joints inevitably arise through stamping or pouring suitable mortar or putty Need to become. This combination of materials different physical properties causes a additional stress on the refractory lining the mere attack of the melt. Also allow molded refractory components only with considerable effort a variation of the shape of the floor.
  • the formation given by the convex shape reinforcement of the impact area counteracting a depression flatten through the impact element can in any case with the initial convex shape considerable increase in the service life of the pan base can be achieved.
  • the convex shape of the impact element works with the rest of the design of the pan bottom together that the impinging element Steel initially according to the curvature of the impact element flows out and then into the slope of the pan bottom device, so that it runs over its entire flow path Spout extending overall gradient without recesses finds.
  • the manufacture of the irregular shape of the bottom of the Lining is characterized by the third characteristic of the monolithic Lining them in a practical way enables, which also has the great advantage of a seamless and therefore have a low-attack surface.
  • monolithic Fireproof linings are taken for z. B. known from DE 44 03 270 C1. With such Linings become flowable casting or vibrating masses in combination with appropriate templates used and result in a seamless, from uniform Material existing free shaping of the Lining.
  • According to the invention is a mold for producing a Previously lined the bottom of a container made of a flowable refractory material according to claim 1 trained.
  • the curved impact element by a separate one that can be connected to the bottom of the mold Be formed.
  • the ladle designated 100 as a whole in FIG. 1 consists of a pot-shaped steel housing 1 with an in the operating position is essentially horizontal 2 and an upright, a little conically diverging upwards Side wall 3.
  • the Ladle 100 a slightly oval floor plan. This can but also e.g. be circular.
  • On the outside of the Steel sheet existing side wall 3 are opposite to each other horizontal pin 4 attached to which a hanging device 5 attacks on the ladle 100 can be lifted on a crane. To empty the Slag after pouring those in ladle 100 The ladle 100 can melt around the axis A the pin 4 are tilted.
  • the housing 1 of the ladle 100 is on the side wall 3 provided with a brick refractory lining 6, whose inner plates are designated 7. Also the Bottom 2 of the housing 1 has a brick or cast Permanent feed 8, which by anchor 9 on the floor 2 is held so that it is when tilting the ladle 100 does not detach from the floor 2.
  • the liner 20 includes a shape a base plate having actual floor 21 and a side wall pulling up on it at the edge 22, which is about 3 to 20% of the height of the ladle 100 extends and integral with the bottom 21 monolithic molded part in the shape of a flat pot forms.
  • the bottom plate of the lining 20 of the floor 2 can be up to 80 cm thick with large ladles exhibit.
  • the top 23 of the bottom 21 is not flat, but has a certain relief, which is designed so that from any point on top 23 the path to that Spout 25 has a slope, which on the whole Distance that a certain volume element of the melt from anywhere on the ladle over its bottom 21 has to cover the spout 25, is in the same direction. It there are therefore no depressions in the surface 23 in which could stop the melt.
  • the spout 25 provides the lowest point of the flow path for a volume element the melt and is without the volume element intermediate recovery achieved.
  • the spout 25 lies as from 1 and 3 can be seen, close to the edge of the floor plan the mold 100.
  • the relief of the top 23 of the So bottom 21 is not about an upright central axis symmetrical, but points to the side of the spout 25 a pretty steep slope up while the slope up the opposite side is much lower.
  • the Relationships are to be illustrated by the fact that in Fig. 1 contour lines 29 of the top 23 of the bottom 21 is drawn are.
  • the Contour lines 29 close together, which is a steep gradient implies while essential on the opposite side further apart, i.e. the slope is there much less. But the relief is designed that the gradient from all directions over 360 ° the axis B of the outlet 25 unidirectionally against the outlet 25 is directed so that no melt remains anywhere can.
  • the spout 25 (Fig. 3) includes one in the monolithic Material of the bottom 21 embedded outlet nozzle 31 with an inner diameter 34. Starting from the upper edge the outlet nozzle 31 is a funnel 32 in the bottom 21 formed after with an opening angle of about 60 ° apart at the top. When the pouring ends If the melt is at a height of 36, it is ensured that no slag, which is then at 37 stands, is poured with and remains only a small Volume of melt in the ladle 100.
  • the height 36 is a distance 35 above the height 36 located upper edge of the outlet nozzle 31.
  • the route 35 is at least as large as the diameter 34 of the Spout 25.
  • the uniform formation of the top 23 of the bottom 21 according to the contour lines 29 is by a baffle 30 interrupted by an increase in Top 23 of the bottom 21 is formed, the top 33 is convex and has an oblique border at the edge 26,27 merges into the top 23.
  • the floor plan of the baffle element 30 is in the embodiment about 240 ° circular (Fig. 1) and otherwise straight cut off.
  • the oblique boundary of the circular Part of the reference number 26, that of the straight part carries the Reference number 27.
  • the foot of the oblique boundary 27 lies on a through the middle of the floor plan of the Ladle 100 located through axis B of the spout 25 straight lines 28.
  • the flat curvature of the upper side 33 of the impact element 30 can be part of a spherical surface, but also another continuous surface convex curvature.
  • the one resulting from the curvature Thickening of the bottom 21 in the area of the impact element 30 enables the ladle to be used longer 100 until hot by the erosion of the striking Interfering depressions have occurred.
  • the shape of the top 23 of the bottom 21 is made with the help a template or shape 40 created by a stable flat-pot-shaped molded part made of strong steel sheet is formed (Fig. 5), which is an annular includes upright side wall 41 and a bottom plate 42, the underside of which complements the relief of the lining 20 is formed.
  • the form 40 can with the help of Crane eyelets 43 attached ropes or chains a crane can be lowered into the ladle 100, where it is secured against buoyancy. It then becomes the gap between the outside of the mold 40 and the inner plate layer 7 of the permanent lining 6 or the top of the permanent lining 8 of the bottom 21 with a through Cross-hatching depicted flowable refractory material filled to a height 38 (Fig.
  • the shape 40 has a concave shape, which thereby can be formed that a correspondingly lumped calotte 48 screwed onto the bottom plate 42 of the mold is, at the location of the later impact element 30th there is a perforation in the base plate 42 under the calotte 48 is located, which is covered by the cap 46.
  • Formation of the oblique boundaries 26, 27 serve at the Dome 48 attached bevels 46.47. The attachment takes place by means of welded-on angles 44 and screws 45, only one of which is shown in FIGS. 1 and 5 or in any other suitable way.
  • bottom plate 42 In the middle of the calotte 48 or in another place bottom plate 42 has a connection 49 for compressed air, that after the end of the molding between the bottom the bottom plate 42 and the top 23 of the bottom 21 is initiated and the lifting of the mold 40 is supported.
  • the connection 49 also allows the venting of the Space under the cap 48 when filling the flowable refractory material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Details (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (3)

  1. Moule de fabrication du fond (2) d'un récipient pour coulée métallurgique, en particulier d'une poche de coulée (100) d'acier fondu comprenant
    un boítier (1) en forme de pot ouvert vers le haut, en tôle d'acier, avec un fond (2) et une paroi latérale (3) verticale en service,
    recouvrant la face interne du boítier (1), un revêtement résistant au feu, qui délimite le volume interne libre du boítier (1) accueillant le métal fondu avec, traversant le fond (21) du revêtement et celui (2) du boítier (1), une busette de coulée (25) pour le métal fondu,
    étant précisé que la face supérieure (23) du fond (21) du revêtement, dans chaque plan passant par l'axe vertical (B) traversant la busette de coulée (25) en son milieu, présente une pente dirigée vers la busette (25) et, dans la zone de celle-ci un élément de rebondissement (30) résistant au feu, avec une surface (33) bombée convexe,
    caractérisé en ce que
    le moule (40) est constitué par un corps de moule en tôle d'acier ayant la forme d'un pot bas ouvert en haut qui peut être descendu au moyen d'une grue dans le récipient et qui présente, sur la faxe inférieure de sa plaque de fond (42), le relief qui est complémentaire à celui de la face supérieure (23, 33) du fond (21) du revêtement (20).
  2. Moule selon la revendication 1,
    caractérisé en ce que
    le moule (40) présente, dans la zone de l'élément de rebondissement (30), une ouverture (36) correspondant au contour en plan de cet élément et qui est recouverte par une calotte (48) bombée qui peut être reliée à la plaque de fond (42) du moule (40), le long du bord de l'ouverture (36).
  3. Moule selon la revendication 2,
    caractérisé en ce qu'
    il est prévu, au milieu de la calotte (48), un raccord (49) pour une conduite amenant un agent de pression fluide pour apporter une assistance au levage du moule (40) quand on le sépare du fond (21) du revêtement (20) lors du démoulage.
EP99902542A 1998-01-22 1999-01-15 Recipient pour coulee metallurgique Expired - Lifetime EP1049551B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19802222A DE19802222C2 (de) 1998-01-22 1998-01-22 Behälter für metallurgische Schmelzen
DE19802222 1998-01-22
PCT/EP1999/000208 WO1999037423A1 (fr) 1998-01-22 1999-01-15 Recipient pour coulee metallurgique

Publications (2)

Publication Number Publication Date
EP1049551A1 EP1049551A1 (fr) 2000-11-08
EP1049551B1 true EP1049551B1 (fr) 2003-04-02

Family

ID=7855282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99902542A Expired - Lifetime EP1049551B1 (fr) 1998-01-22 1999-01-15 Recipient pour coulee metallurgique

Country Status (6)

Country Link
EP (1) EP1049551B1 (fr)
JP (1) JP3386794B2 (fr)
AT (1) ATE235980T1 (fr)
DE (2) DE19802222C2 (fr)
WO (1) WO1999037423A1 (fr)
ZA (1) ZA99359B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SK892016A3 (sk) * 2016-10-10 2018-07-02 I.P.C. Refractories, Spol. S R.O. Spôsob liatia roztaveného kovu s využitím dopadovej dosky v medzipanve
JP2019166548A (ja) * 2018-03-23 2019-10-03 大同特殊鋼株式会社 柱状鋼塊用鋳造装置及びその製造方法
JP7406095B2 (ja) * 2020-03-24 2023-12-27 日本製鉄株式会社 溶鋼鍋

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0429323A1 (fr) * 1989-11-17 1991-05-29 Sollac Poche pour l'élaboration d'un métal munie d'un revêtement réfractaire de fond et procédé de réalisation d'un tel revêtement réfractaire de fond

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472456A (en) * 1945-03-20 1949-06-07 Robert J Anicetti Crucible and method of making crucibles
JPS518608B1 (fr) * 1971-07-10 1976-03-18
SE435548B (sv) * 1980-03-10 1984-10-01 Asea Ab Anordning vid skenkar eller skenkugnar for likstrom med minst en ljusbagselektrod
FR2533492B1 (fr) * 1982-09-29 1986-06-13 Gilson Jacques Procede et installation de moulage d'un revetement refractaire de conteneur pour metal liquide
DE3443281A1 (de) * 1984-11-28 1986-06-05 Lichtenberg Feuerfest GmbH, 5200 Siegburg Pfanne zum aufnehmen und ggf. nachbehandeln und/oder transportieren von heissen, fluessigen metallen
US4746102A (en) * 1987-03-20 1988-05-24 Bethlehem Steel Corporation Drain hole design for ladle
FR2657549B1 (fr) * 1990-01-26 1992-04-24 Daussan & Co Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches et revetement de protection ainsi obtenu.
DE4403270C2 (de) * 1994-02-03 2000-02-24 Dolomitwerke Gmbh Verfahren und Vorrichtung zur Herstellung einer monolithischen feuerfesten Auskleidung von Stahlgießpfannen
ATE195275T1 (de) * 1996-08-29 2000-08-15 Mannesmann Ag Metallurgisches gefäss zum transport, zwischenspeichern oder dosieren flüssiger, metallischer schmelzen und verfahren zu dessen herstellung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0429323A1 (fr) * 1989-11-17 1991-05-29 Sollac Poche pour l'élaboration d'un métal munie d'un revêtement réfractaire de fond et procédé de réalisation d'un tel revêtement réfractaire de fond

Also Published As

Publication number Publication date
DE59904841D1 (de) 2003-05-08
WO1999037423A9 (fr) 1999-10-14
WO1999037423A1 (fr) 1999-07-29
DE19802222A1 (de) 1999-07-29
JP2002500956A (ja) 2002-01-15
ZA99359B (en) 1999-07-19
JP3386794B2 (ja) 2003-03-17
DE19802222C2 (de) 2002-08-08
EP1049551A1 (fr) 2000-11-08
ATE235980T1 (de) 2003-04-15

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