EP1137501B1 - Machine a couler les gueuses - Google Patents

Machine a couler les gueuses Download PDF

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Publication number
EP1137501B1
EP1137501B1 EP99941561A EP99941561A EP1137501B1 EP 1137501 B1 EP1137501 B1 EP 1137501B1 EP 99941561 A EP99941561 A EP 99941561A EP 99941561 A EP99941561 A EP 99941561A EP 1137501 B1 EP1137501 B1 EP 1137501B1
Authority
EP
European Patent Office
Prior art keywords
pig
casting
pig casting
moulds
machine according
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
EP99941561A
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German (de)
English (en)
Other versions
EP1137501A1 (fr
Inventor
Peter Heinrich
Volker Hille
Ursula Kallenborn-Weber
Fritz-Peter Pleschiutschnigg
Manfred Albedyhl
Hartmut Hille
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag 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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP1137501A1 publication Critical patent/EP1137501A1/fr
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Publication of EP1137501B1 publication Critical patent/EP1137501B1/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
    • B22D5/00—Machines or plants for pig or like casting

Definitions

  • the invention relates to a pig casting machine according to the characteristics of the Preamble of Claim 1.
  • the invention relates to the use of a such a casting machine.
  • Liquid pig iron is known to be either after tapping in the Blast furnace fed to the steelworks by means of pans or, if not immediately can be further processed in the form of ingots, so-called ingots Shed storage or for further transport.
  • ingots Shed storage or for further transport Have pig iron pigs different weights, usually depending on the intended use a pig weighs about 6 kilograms.
  • Pig casting machines are used to produce pig iron. These traditionally consist of a casting station, at least an endless conveyor belt and an emptying station at the first Deflection point of the endless belt. On this endless conveyor belt are mostly a variety of thick-walled molds arranged. The respective mold is filled with molten pig iron at the casting station. The conveyor line of the ingot casting machine must then extend so far that the liquid Iron in the respective ingot mold before reaching the first deflection point of the endless conveyor belt is solidified and the shrinkage is loosening from the Mold favored. As they pass through the deflection point, they empty Casting molds automatically, or the pigs are made using an appropriate Device released from the molds. The ingot molds or molds are more well known Pig casting machines are made of cast iron. About the process of solidification To accelerate the liquid iron, the molds become sideways and additionally cooled with splash water from above.
  • FR-A-1 053 147 describes a ingot casting machine for casting Light metals or their alloys, especially aluminum.
  • the single ones Pig casting molds are formed from sheets or plates of rolled steel, two sheets forming the long sides of the mold and another sheet forms the bottom of the mold, which can also be wavy can. No baskets are disclosed.
  • DE 114 428 C discloses a casting plant with an endless mold chain, which is used for the production of pig iron.
  • the ingot forms exist completely Made of fireproof material, a metal for attachment to the link chain Have coat. It is therefore the combination of pig iron as something to be cast Metal and refractory (ceramic) ingot molds disclosed.
  • the Mess form is completely absorbed by the coat in close contact.
  • German patent DE 809 948 is a pig casting machine for Casting light metals and their alloys with correspondingly low Melting points known, the ingot casting molds as an endless belt are arranged. It is suggested to use the ingot shapes instead of cast iron form from a forged metallic material, for example made of copper or aluminum or steel. It is described that it is based on this Is possible to get by with relatively thin-walled pig shapes, as they are directly cooled with water before, during and after watering can be, for example, by spraying from below.
  • the invention is based on the object to provide a pig casting machine with thin-walled Ingot casting molds, which are excellent with good shape stability have cooling effect.
  • the invention is based on the knowledge confirmed by tests that it The cooling of the ingot molds makes it possible, completely different from the decades retained casting of only light metals with a low melting point for casting heavy metals with Melting points above 1,000 ° C to use such casting molds, which are made of a heat-resistant material whose melting point even lower or not significantly higher than the respective melting point of the metal to be shed.
  • the known capacitive cooling is the case; rather prevents areal Cooling their melting.
  • the metal melts to be cast it is particularly heavy metals, such as pig iron, the is usually cast at temperatures between 1450 and 1520 ° C.
  • the ingot molds are preferably made of copper, whose melting point is at 1083 ° C. But they are also materials with significantly lower thermal conductivity conceivable, for example heat-resistant steel, whose melting point - depending on its carbon content - around 1520 ° C lies.
  • the criteria for the material of the ingot shape can be based on other essentials Properties are placed, in particular on the cold or Hot formability properties that determine the suitability for Rolling and preferred subsequent deep drawing, which is an inexpensive Manufacturing allowed, as well as the mechanical properties at elevated temperature, those for the shape stability of the casting mold in use and its insensitivity against cracks.
  • a preferred proposal of the invention therefore provides that the thin-walled primary material for the ingot casting molds manufactured by rolling and then, for example, deep-drawn or is formed by die pressing.
  • the Support baskets are designed so that they are only partially in support contact with the casting molds are.
  • the inner contour of the support baskets is approximately adapted to the outer contour of the ingot casting molds, and also the inner surface the support baskets with support pins for selective support of the thin-walled casting molds, preferably the diameter of the support pins on Carrier basket should not be larger than the wall thickness of the ingot shape. It will thus both the requirements in ensuring adequate Dimensional stability of the thin-walled pig shape as well as due to the only selective support of the still unimpeded cooling is sufficient done.
  • the carrier basket can also be designed as a lattice basket, which is the respective ingot mold supports like a net.
  • the execution and the material for the support means are chosen so that they have a low elastic deformation do not counteract the shape of the pig because of the weight of the pig. Due to this elastic deformation and thus little expansion the form supports the removal of the ingot at the emptying station.
  • the carrier basket itself can have rollers that run along guide rails to run.
  • the basket is over corresponding Holding means suspended in two parallel chains.
  • the support basket With the support basket it is possible to cover the wall of the respective casting mold train very thin. Have molds with thin walls the advantage that the risk of cracking due to thermal stress is minimized. With decreasing wall thickness, the form stability decreases, whereby this disadvantage is compensated for by the supporting effect of the carrier basket. Due to the partial support by means of the support pins or the grid is a cooling of the ingot molds and thus the casting Spraying or immersing in a bath is not significantly hindered. at Carrying basket with support pins should be the diameter of the Support pins on the carrier basket correspond at most to the wall thickness of the ingot shape, so that the cooling at the points of application of the support pins is not impaired becomes. Overall, a stable ingot mold with cheap Cooling properties provided. The melt solidifies faster, the circulating speed of the endless belt can be increased and thus the amount of melt spilled per time interval.
  • the belt can be shorter and at an unchanged rotational speed then run cheaper.
  • the overlap area of the To provide the edges of adjacent casting molds with refractory material preferably the hot-mold edge area in the overlap area is molded in such a way that a recess for receiving the refractory material arises. Starting from this recess are anchoring means intended for the refractory material.
  • the ingot molds are made of one Composite layer material made, with a material for the hot-side layer is chosen whose melting point is higher than that of copper, in particular a heat-resistant steel, and for the cooling-side layer the highly conductive and crack-resistant copper is chosen.
  • the composite material is preferred produced by roll or explosive plating with subsequent forming, for example, by deep drawing, die pressing or the like.
  • the wall thicknesses of the ingot casting molds should range between 3 to 20 mm and the ratio of the weight of the pig shape to the weight of the pig are in the range between 0.5 and 2.
  • Conventional cast iron pots where only the heat dissipation through the metal wall (so-called capacitive Cooling) is used, in contrast, have a weight ratio Cheating form / cheating from much larger than 1 to typically 6.
  • a pig casting mold comprises a plurality of individual tundishes or mold troughs.
  • the ingot casting molds can also have a cuboid floor surface or cuboidal tundishes, which is a great advantage in production which means molds.
  • the ingot molds are short before, during and after the casting process until the solidified pig is ejected cooled from below, preferably by spraying cooling water on the surface or a water-air mixture.
  • the spray nozzles can vary depending on the location required cooling capacity must be arranged densely or less densely.
  • In the Spray cooling evaporates most of the sprayed water on the underside the slang forms.
  • Unevaporated dripping water is in a gutter captured and reused.
  • the gutter also forms part of one Enclosure for suction and, if necessary, condensation of the resulting water vapor.
  • An additional cooling device between the emptying station and the casting station is possible, but because of the low storage heat Thin-walled pig shapes are not absolutely necessary.
  • the endless belt should not be like known in conventional designs, with an upper and lower run, but be arranged horizontally in the manner of a carousel.
  • a cooling device in the form of spray nozzles and / or a cooling water sump are arranged so that they are just before start the pouring station and extend to the emptying station.
  • the diving tank may also come with the water collecting tank for the dripping water or the condensed water in question. Overall, when using this Design reduced the number of ingot casting molds used, and the Optimized time utilization.
  • the ingot molds are proposed as a preferred embodiment to be double-walled and to be cooled by means of continuous water cooling.
  • a ring distribution line is proposed in the carousel arrangement, according to the ingot molds in a horizontal carousel arrangement rotates and from a rotating pipe in the center of the Carousels is fed, the ring manifold having hoses that in turn feed cooling sections that are in the spaces of the double wall trained ingot molds.
  • the pig casting machine according to Figure 1 or 2 is made up of the essentials Elements casting station 1, two parallel endless conveyor belts 2a, b with one A large number of ingot molds 3 arranged thereon (shown by way of example) and an emptying or collecting station 4 together.
  • the endless belts are used to transport ingot molds from the casting station to the emptying station and vice versa, each ingot mold in the casting station is filled with molten metal with the mold cavity pointing upwards.
  • this liquid pig iron is delivered with torpedo pans 5 (see FIG. 2) and into the individual ingot molds by means of a suitable casting device 6 poured continuously.
  • an endless belt 2 consists of a trough chain and becomes two by forming an upper and a lower run Rollers 7a, 7b, which are at the casting station 1 and emptying station 4th located and operated by means of a sprocket drive station.
  • the embodiment according to FIG. 1 transports the respective endless belt 2 with their molds upward-pointing molds 3 upwards.
  • the emptying station 4 the pig iron masses have solidified to the extent that they automatically along the deflection point of the belt around the roller 7b fall out of the molds.
  • the pigs fall on a pond slide 8, which is divided into two sliding elements, and are divided into one Wagon or container (not shown) collected.
  • FIGS 3 and 4 show schematically the top and sectional view A-A Detail of such an endless belt 2 with several arranged adjacent thin-walled ingot casting molds, whereby only one casting mold follows is described as an example.
  • the mold 12 is with a corresponding Mold trough 13 provided for receiving the melt.
  • the two border areas 14, 15 of a casting mold overlap each other along their longitudinal axis with the edge areas of the neighboring molds.
  • the overlap areas are marked here with 16 and 17. Because of the overlapping Casting is a continuous casting process with a continuous process moving endless belt possible.
  • an edge region forms a casting mold in each case the cooling-side edge region 14 and on the other side the hot side edge area 15, which overlaps the other and thus with the hot melt comes into direct contact.
  • Such a molded mold tape is from below with cooling water from nozzles, here example nozzle 16, splashing.
  • FIG. 5 is a sectional view of the inclusion of such a thin-walled Pig casting mold 12 shown in a carrier basket 17.
  • the carrier basket consists of a support structure 18, which is provided with support pins 19 which the ingot mold Support 12 selectively.
  • Figure 6 shows in plan view that the support structure 18 is provided with two idler rollers 23a, 23b, which on one Longitudinal bolts 20 are mounted. The rollers run on corresponding guide rails 21a, 21b (see FIG. 7). To ensure that the endless belt runs straight are the rollers 23a, 23b with outside flanges 22a, 22b Mistake.
  • Figure 7 makes it clear that the baskets 12 from below with cooling water be splashed.
  • Figure 10 illustrates an embodiment of the plated mold 112 with four Casting troughs 156a to 156d. Such plated molds can be made with appropriate Holding elements 157a, b connected to a drive chain (not shown) become.
  • Figure 11 shows the sectional drawing A-B of Figure 10, here the wall area due to the cooling hose of the Cooling system in Figure 13 is drawn relatively thick.
  • FIG. 12 provides a top view of an overview of a pig casting machine 200 in the embodiment of a horizontal carousel arrangement, with the Arrow the direction of rotation of the endless belt 203 is indicated.
  • the single ones Stations of the ingot casting machine 200 are shown schematically.
  • At 201 is the casting station and therefore the point of application for the pig iron in the casting molds designated.
  • a cooling device is in front of the casting station 201 Arranged by nozzles or sumps with cooling water that are up short extends in front of the drop station 202. The beginning and end of the cooling device are shown schematically with dash-dotted lines.
  • the drop station 202 can are shortly before the casting station 201, since the ingot molds after the Empty only need to be cooled to a small extent. at Passing through the collecting troughs, the area is cooled by the Immerse the bottom of the ingot molds in the cooling water.
  • a water flow cooling with a ring distributor line proposed, as shown in Figure 13.
  • a rotating union 204 is provided with a cooling water inlet 205.
  • the rotary drives for the cooling device and the endless belt for the Casting molds are not shown.
  • this rotating feed 204 becomes a ring distributor line 205 which also rotates with the endless belt fed via radially extending feed lines 206 a, b, each with a pig casting mold 207 a, b etc.
  • a supply line 206a, b etc. is assigned.
  • hoses 208a, 208b provided to the ingot casting molds. These hoses 208a, b enable tilting and Rotating the individual ingot molds 207a, b when they are emptied.
  • This Hoses 208a, b in turn feed cooling tubes 209 a, b, which in the double-walled trained casting molds are arranged (see also figure 11).
  • These cooling hoses 209a, b are each with hose connections 210 and processes 211 provided. In the embodiment shown, this is Cooling water after passing through the respective casting mold in a collecting trough 212a, 212b, the bottom of the collecting trough 212a, 212b is inclined towards the end. It is also a link to one under Coolant circuit under pressure is conceivable.
  • a pig casting machine with the proposed molds can be due the higher performance not only in iron foundries, but also in integrated iron and steel works as an alternative for ladle transport or for a Pouring the pig iron in pits, which is polluting due to the emissions is used.
  • the use of such casting machines in electrical steelworks with a direct blast furnace conceivable. It is therefore possible due to different production cycles and availabilities of excess pig iron available to pigs to be shed, which can then be added later in the Electric furnace can be melted down.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Casting Devices For Molds (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Confectionery (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Claims (13)

  1. Machine à couler les gueuses, comportant au moins une bande de transport sans fin sur laquelle sont fixés des moules à gueuses, pour le transport des moules à gueuses en provenance d'une station de coulée vers une station de vidage des gueuses et vice versa, chaque moule à gueuse, le creux du moule étant tourné vers le haut, étant rempli de coulée métallique lors de son passage à travers la station de coulée, ainsi qu'un dispositif de refroidissement des moules à gueuses avant, pendant et/ou après la coulée, les moules à gueuses étant conçus avec des parois minces et consistant en une matière dont la température de fusion est plus faible que la température de fusion du métal à couler, qui est supérieure à 1000 °C ou consistant en un acier résistant à la chaleur,
    caractérisée en ce que
    des corbeilles porteuses (17) sont fixées à la bande de transport sans fin respective pour recevoir les différents moules à gueuses (12), les corbeilles porteuses étant configurées de manière à n'être que partiellement en contact d'appui avec les moules à gueuses, le contour interne des corbeilles porteuses étant approximativement adapté au contour externe des moules à gueuses et muni de tiges d'appui (19) servant à l'appui ponctuel des moules à gueuses à parois minces.
  2. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    les moules à gueuses sont composés d'une matière première laminée.
  3. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    le diamètre des tiges d'appui sur la corbeille porteuse n'est pas plus grand que l'épaisseur de paroi du moule à gueuse.
  4. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    les corbeilles porteuses se présentent sous forme d'une corbeille grillagée qui soutient à la manière d'un filet le moule à gueuse respectif.
  5. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    les bords des moules à gueuses voisins se recouvrent et que la zone de recouvrement (150) est munie d'une matière incombustible (152).
  6. Machine à couler les gueuses selon la revendication 5,
    caractérisée en ce que
    le bord du moule (150) se trouvant dans la zone de recouvrement respectivement du côté de la chaleur est formé de manière à créer un renfoncement (151) destiné à recevoir la matière incombustible (152) et qu'à partir de ce renfoncement, des moyens d'ancrage (153) sont prévus pour la matière incombustible.
  7. Machine à couler les gueuses selon la revendication 5 ou 6,
    caractérisée en ce que
    les moules à gueuses consistent en une matière feuilletée composite, étant choisie pour la couche située du côté de la chaleur (154) une matière dont le point de fusion est plus élevé que celui du cuivre, notamment un acier résistant à la chaleur, et du cuivre étant choisi pour la couche située du côté refroidissement (155).
  8. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    l'épaisseur de paroi du moule à gueuse respectif se situe dans une plage allant de 3 à 20 mm et que le rapport de poids du moule à gueuse au poids de la gueuse se situe dans une plage allant de 0,5 à 2.
  9. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    un moule à gueuse comprend une pluralité de bacs de coulée individuels (156a à 156d).
  10. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    le dispositif de refroidissement comprend des buses (16) servant à la projection ciblée d'un produit refroidisseur sur les moules, notamment à la projection ciblée à partir du bas, ou est configuré comme un bac de passage rempli de produit refroidisseur dans lequel les côtés inférieurs des moules plongent partiellement pendant le transport.
  11. Machine à couler les gueuses selon la revendication 1,
    caractérisée en ce que
    la bande sans fin (203) s'étend horizontalement suivant un agencement en manège et qu'à la station de vidage (202) sont prévus des dispositifs pour séparer les moules à gueuses les uns des autres ainsi que pour les vider par un mouvement de rotation ou de basculement.
  12. Machine à couler les gueuses selon la revendication 11,
    caractérisée en ce que
    le dispositif de refroidissement comprend une conduite de répartition circulaire (205) qui tourne en même temps comme les moules à gueuses en agencement horizontal en manège et est alimentée par une conduite d'acheminement tournante (204) au centre du manège, la conduite de répartition circulaire (205) présentant des tuyaux (208 a, b) qui alimentent à leur tour des sections transversales de refroidissement (209 a, b) qui sont constituées dans les intervalles entre les moules à gueuses conçus avec une double paroi (207a, b).
  13. Utilisation d'une machine à couler les gueuses, comprenant au moins une bande de transport sans fin, sur laquelle sont fixés des moules à gueuses, pour le transport des moules à gueuses en provenance d'une station de coulée vers une station de vidage des gueuses et vice versa, chaque moule à gueuse, le creux du moule étant tourné vers le haut, étant rempli de coulée métallique lors de son passage à travers la station de coulée, ainsi qu'un dispositif de refroidissement des moules à gueuses avant, pendant et/ou après la coulée, les moules à gueuses étant conçus avec une paroi mince,
    caractérisée en ce que
    des coulées de métal lourd sont versées dans les moules à gueuses qui consistent en une matière dont le point de fusion est inférieur au point de fusion respectif du métal lourd à couler.
EP99941561A 1998-08-10 1999-08-10 Machine a couler les gueuses Expired - Lifetime EP1137501B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19835824 1998-08-10
DE19835824 1998-08-10
PCT/EP1999/005807 WO2000009278A1 (fr) 1998-08-10 1999-08-10 Machine a couler les gueuses

Publications (2)

Publication Number Publication Date
EP1137501A1 EP1137501A1 (fr) 2001-10-04
EP1137501B1 true EP1137501B1 (fr) 2003-07-16

Family

ID=7876849

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Application Number Title Priority Date Filing Date
EP99941561A Expired - Lifetime EP1137501B1 (fr) 1998-08-10 1999-08-10 Machine a couler les gueuses

Country Status (6)

Country Link
US (1) US6497271B1 (fr)
EP (1) EP1137501B1 (fr)
JP (1) JP2002522230A (fr)
AT (1) ATE245064T1 (fr)
DE (1) DE59906310D1 (fr)
WO (1) WO2000009278A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19900780A1 (de) * 1999-01-12 2000-07-13 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen von Kokillenformen für Masselgießanlagen
DE19902441A1 (de) * 1999-01-22 2000-07-27 Sms Demag Ag Vorrichtung zum Eingießen von Metallschmelze, insbesondere Gußeisen, in Masselgießformen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114428C (fr) *
US697769A (en) * 1901-01-29 1902-04-15 Alfred M Acklin Casting apparatus.
DE809948C (de) * 1948-10-02 1951-08-06 Ver Leichtmetallwerke Gmbh Masselgiessmaschine
FR1053147A (fr) * 1952-03-28 1954-02-01 Lingotière et installation pour l'obtention de lingots de métaux légers et leurs alliages, notamment d'aluminium et d'alliages d'aluminium
GB937513A (en) * 1961-02-07 1963-09-25 Worswick Alan Eng Improvements relating to ingot casting machines
US3583475A (en) * 1969-04-02 1971-06-08 Nippon Light Metal Co Apparatus for continuously casting ingots

Also Published As

Publication number Publication date
WO2000009278A1 (fr) 2000-02-24
EP1137501A1 (fr) 2001-10-04
JP2002522230A (ja) 2002-07-23
ATE245064T1 (de) 2003-08-15
DE59906310D1 (de) 2003-08-21
US6497271B1 (en) 2002-12-24

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