US3452809A - Apparatus for the continuous casting of metal - Google Patents

Apparatus for the continuous casting of metal Download PDF

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Publication number
US3452809A
US3452809A US628320A US3452809DA US3452809A US 3452809 A US3452809 A US 3452809A US 628320 A US628320 A US 628320A US 3452809D A US3452809D A US 3452809DA US 3452809 A US3452809 A US 3452809A
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United States
Prior art keywords
metal
mold
bands
rollers
band
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Expired - Lifetime
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US628320A
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English (en)
Inventor
Jacques Dumont-Fillon
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Institut de Recherches de la Siderurgie Francaise IRSID
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Institut de Recherches de la Siderurgie Francaise IRSID
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process

Definitions

  • An apparatus for the continuous casting of metal and including an elongated fiow mold having walls formed by four endless flexible bands movably supported on a plurality of rollers, wherein the bands and the rollers supporting the same are arranged in such a manner that the four bands delineate a space in the form of a right pyramid frustum, and preferably including pressure means cooperating with the bands for pressing the same against the metal poured into the aforementioned space through the end thereof defined by the larger end face of the frustum for maintaining the bands over the whole length of the mold in contact with the metal poured thereinto during solidfication and shrinkage of the latter.
  • the present invention relates to an apparatus for continuous metal casting including an elongated fiow mold into which metal is cast at one end thereof and solidifies therein so that solidified metal may be withdrawn continuously from the other end of the mold. More specifically, the present invention relates to an apparatus including an elongated flow mold the walls of which are movable.
  • Elongated flow molds are known in the art in which the walls thereof are formed from movable bands or chains; however, in the flow molds known in the art the spacing between each two opposite Walls of the mold is fixed so that during progressive solidification and shrinkage of the liquid metal poured into the mold air spaces are formed between the mold walls and the surfaces of the solidified metal, which air spaces have a relatively small heat conductivity and retard thereby considerably the cooling of the metal. Sometimes even a reheating of the solidified and rather thin metal crust will occur in whic case a piercing of this crust is unavoidable.
  • the apparatus for the continuous casting of metal mainly comprises an elongated flow mold having a longitudinal axis and opposite open ends and a cross section in the form of a right quadrangle and having walls formed by four endless flexible bands with a plurality of rollers supporting the bands movable in longitudinal direction, the bands and the rollers supporting the same are arranged so that the longitudinal axis of each band and the axis of the mold are inclined with respect to each other and located in different planes, each band axis being inclined in the same sense and through the same angle ice with respect to the axis of the mold, and so that each band engages with one side edge thereof the band adjacent thereto and so that a plane passing through the axis of one band and the one side edge thereof intersects the band adjacent thereto at right angles such that the four bands delineate a space in the form of a right pyramid frustum having quadrangular end faces, the larger of which being located at one end of the mold into
  • the rollers which support each band are articulately mounted movable in two directions transverse to each other relative to a fixed support in such a manner that the bands may define a space in the form of a right pyramid frustum the apex angle of which may be changed corresponding to the form which the solidifying metal will take during its shrinkage.
  • the apparatus may include pressure means cooperating with the bands for maintaining the latter over the whole length of the mold in contact with the solidifying metal.
  • the endless band is a metal band the extremities thereof are fixed by welding or otherwise to each other, for instance in a similar manner as the ends of a transmission belt are fixed to each other.
  • One of the aims and advantages of the apparatus according to the present invention is that constant contact between the metal and thefour faces of the flow mold during passage of the metal through the latter and solidification thereof is maintained despite the shrinkage of the metal caused during its solidification and cooling.
  • the bands are arranged in such a manner that the space defined by the same forms a right pyramid frustum which is generally of the form that the metal takes in the flow mold due to its shrinkage.
  • the bands when the flow mold is formed by bands which are articulately mounted with freedom of movement in two directions, the bands may define a right pyramid frustum with a variable apex angle which in each case has the form the metal will take during its solidification and shrinkage.
  • FIG. 1 is a schematic partly sectioned side view of an apparatus according to the present invention
  • FIG. 2 is a top view of the apparatus shown in FIG. 1, with the means for pouring liquid metal into the mold omitted;
  • FIG. 3 is a sectional view taken along the line a-b of FIG. 4 and illustrating a detail of the apparatus.
  • FIG. 4 is a side view of the detail shown in FIG. 3, partly sectioned, the section being taken along the line c-d of FIG. 3.
  • the apparatus of the present invention mainly comprises an elongated flow mold 1 having opposite open ends and means for feeding molten metal 2 into the upper open end of the mold, which may comprise a receptacle 3 arranged above the mold and having a discharge passage arranged substantially along the mold axis.
  • the speed at which the molten metal is fed into the mold is regulated in a known manner by the operator, for example, by main taining a constant level 4 of molten metal in the receptacle 3, and the molten metal is fed into the receptacle 3 in a. manner known per se, not forming part of the present invention.
  • the elongated flow mold 1 is formed by four flexible sheet metal bands of equal length 5, 5a, 5b, and 50, each movably arranged in an endless loop about three guide rollers that is the guide rollers 6, 7, and 8 or 6a, 7a, and 8a or 6b, 7b, and 8b or 60, 7c, and 80, respectively, and the axes of these rollers are respectively designated 9, 10, 11 or 9a, 10a, 11a or 9b, 10b, 11b or Be, 10c, 11c (certain of these rollers or axes are not visible in the drawings, which however will not prevent proper understanding of the figure).
  • the axes of the rollers which guide the respective bands for instance the axes 9, 9a, 9b and 9c of the rollers 6, 6a, 6b and 6c are not located in a horizontal plane, but are inclined with respect to each other. This arrangement has two consequences:
  • each band is inclined with respect to the longitudinal axis 13 of the elongated flow mold, as for instance clearly shown in FIG. 1 for the axis 12 of the band 5;
  • the band 5 abuts with its left longitudinal edge, as viewed in FIG. 1, obliquely inclined onto the band 5b and the band 5b abuts with one longitudinal edge obliquely inclined onto the band 50, whereas the band 56 abuts with one longitudinal edge against the band 5a and the latter abuts with one longitudinal edge obliquely inclined onto the band 5.
  • the inner space thus defined by the four abutting bands is a pyramid frustum, that is a space corresponding exactly to the shape the metal will assume as it passes through the flow mold due to its solidification and corresponding shrink-age.
  • Each roller of a set of rollers which respectively support the above-mentioned four bands is supported at the opposite ends of its axis in a common movable frame.
  • the rollers 6b, 7b and 8b are supported at opposite ends of their axes 9b, 10b and 11b in the movable frame 16b, and the movable frames 16, 16a and 160 support respectively the axes of the rollers 6, 7, 8; 6a, 7a,
  • Each of the frames 16, 16a, 16b, and 16c carries fixedly connected thereto a plurality of arms laterally projecting therefrom which turnably sup port small pressure rollers serving to maintain the respective bands in close contact with the metal during its solidification.
  • the frame 16b carries the arms 17b, 18b, 19b and 20b fixedly connected thereto which respectively tum-ably support the axes of the small pressure rollers 21b, 22b, 23b and 24b.
  • the frame 16 best shown in FIG.
  • FIG. 4 carries the arms 17, 18, 19, and 20 which respectively turn-ably support the small pressure rollers 21, 22, 23, and 24, and it is understood that the other two frames 16a and 16c likewise carry a plurality of arms supporting small pressure rollers in the same manner as the frames 16b and 16 while only the arms 17a on the frame 161: and the pressure roller 21:: mounted thereon is shown in FIG. 1.
  • each of the small pressure rollers is pressed against the respective band by springs, and the springs 25, 26, 27 and 28 respectively cooperating with the pressure rollers 21-24 are clearly shown in FIG. 4, whereas the springs 25b, 26b, 27b and 28b cooperating with the pressure rollers carried by the arms on the frame 16b are shown in FIG. 1 and it is to be understood that the pressure rollers carried by the frames 16a are likewise pressed by springs against the corresponding bands, of which springs only the springs 25a and 26a are likewise shown in FIG. 1.
  • a plurality of nozzles 29 mounted on the respective frames between the rollers serve to spray jets of atomized water 30 against the surf-aces of the respective bands which are opposite the surfaces thereof which contact the metal, to accelerate cooling of the latter.
  • rollers In order not to overload the drawing with too many details, the rollers have been shown in a simplified manner in the drawing. Actually all rollers which support band portions in contact with the metal are provided on the peripheral surface thereof with small projections on the extremities of which the bands are supported. This arrange ment permits the cooling water to cool the bands also in the region of the rollers. Likewise, for reason of clarity, the means for pivotally supporting the movable frames 16, 16a, 16b and 160 are omitted from FIG. 1, and the support arrangement is shown in further detail for the frame 16 in FIGS. 3 and 4.
  • FIG. 2 In the top view of FIG. 2 the receptacle 3 is omitted and FIG. 2 more clearly shows the bands 50 movable on the rollers 6c, 70, as well as the frame 160.
  • FIGS. 3 and 4 more clearly illustrate the pivotal mounting of the frame 16 which carries the rollers 6, 7, 8 supporting the band 5. It is to be understood that the three other frames 16a, 16b, and 160 are supported in the same manner as shown for a frame 16 in FIGS. 3 and 4.
  • FIG. 3 also illustrates that the roller 23 is provided at the peripheral surface thereof with small projections 31 in staggered arrangement, and it is also to be understood that the other rollers which support band portions in contact with the metal are likewise provided with such projections.
  • the frame 16 which supports the axes of the rollers 6, 7, 8 on which the band 5 is movably mounted comprises two side plates 32 and 33 connected to each other by cross plates 34 and 35.
  • the cross plate 34 carries a swivel joint 36 which is connected to a stationary support 37 by means of a fixed arm 38.
  • An hydraulic jack 39 pivotally connected at one end at 40 onto a column fixed to the stationary support 37 is pivotally connected at the other end thereof at 41 to the side plate 33 of the frame 16.
  • a primary pivotal movement of the frame 16 is obtained about an axis passing through the center of the pivot joint 36 and being parallel to the portion of band 5 in contact with the metal, this axis is perpendicular to a plane defined by the axis of the hand 5 and the center of the pivot joint 36.
  • a concomitant pivotal movement of the other frames 16a, 16b and 160 is obtained in the same manner by similar mechanical arrangements (jack and pivot joint), which produces, due to the pivot joint 36, a second pivotal movement of the frame 16 about an axis passing through the center of the pivot joint and perpendicular to the face of the band 5 which is in contact with the metal. This second pivotal movement will also be produced in the same manner of the frames 16a, 16b and 160. It is recalled that the faces of the bands which are in contact with the metal are plane faces.
  • the arrangement according to the present invention can be used advantageously for the continuous casting of metals such as lead, copper, aluminum, antimony, different alloys, etc., and especially for the continuous casting of steel.
  • the apparatus above-described may be operated during continuous casting of steel in the following manner:
  • a steel block of a cross section slightly smaller than the lower outlet end of the mold is introduced into the flow mold with the lower end of the steel block extending between the withdrawal rollers and 15a.
  • the aforementioned springs are then released so that the steel block is held between the bands and between the withdrawal rollers.
  • the upper surface of the steel block is then covered with a layer of asbestos and granulated steel, and molten metal is then discharged from the receptacle 3 into the upper end of the flow mold 1 while water is sprayed through the nozzles 29 onto the bands so that the molten metal progressively solidifies in contact with the cooled band.
  • the flow mold has a square cross section, it is to be understood that the principles of the above-described fiow mold may also be used for a flow mold of rectangular cross section.
  • An apparatus for the continuous casting of metal comprising, in combination, an elongated flow mold having a longitudinal axis and opposite open ends and a cross section in form of a right quadrangle and having walls formed by four endless flexible bands and a plurality of rollers supporting the bands movable in longitudinal direction, said bands and said plurality of roller supporting the same are arranged so that the longitudinal axis of each band and said axis of said mold are inclined with respect to each other and located in different planes, each band axis being inclined in the same sense with respect to the axis of the mold, and so that each band engages with one longitudinal edge thereof the band adjacent thereto so that a plane passing through the axis of one band and said one longitudinal edge thereof intersects the band adjacent thereto at right angles such that said four bands delineate a space in form of a right pyramid frustum having quadrangular end faces, the larger of which being located at one end of the mold; means arranged in the region of said one end of said mold for pouring liquid metal thereinto, and withdrawal
  • An apparatus as defined in claim 1 including an elongated frame for each band carrying two of said plurality of rollers at opposite ends thereof turnably about their axes, stationary support means, means articulately connecting said frame intermediate its end to said support means movable in two directions transverse to each other, and biasing means connected to said frame for biasing that one of said rollers which is closer to said other end of said mold toward the mold axis.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US628320A 1966-04-08 1967-04-04 Apparatus for the continuous casting of metal Expired - Lifetime US3452809A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR56983A FR1483849A (fr) 1966-04-08 1966-04-08 Nouveau dispositif pour la coulée continue d'un métal

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US3452809A true US3452809A (en) 1969-07-01

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US628320A Expired - Lifetime US3452809A (en) 1966-04-08 1967-04-04 Apparatus for the continuous casting of metal

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US (1) US3452809A (de)
AT (1) AT268570B (de)
BE (1) BE696577A (de)
CH (1) CH467121A (de)
CS (1) CS158199B2 (de)
DE (1) DE1558259C3 (de)
ES (1) ES338758A1 (de)
FR (1) FR1483849A (de)
GB (1) GB1181453A (de)
LU (1) LU53344A1 (de)
SE (1) SE320158B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799239A (en) * 1968-11-26 1974-03-26 Siderurgie Fse Inst Rech Method for continuous casting of metal
US4008750A (en) * 1975-04-15 1977-02-22 Alcan Research And Development Limited Continuous casting of metals
US4049042A (en) * 1976-03-31 1977-09-20 Gte Laboratories Incorporated Apparatus for continuous casting
US4061178A (en) * 1975-04-15 1977-12-06 Alcan Research And Development Limited Continuous casting of metal strip between moving belts
US4061177A (en) * 1975-04-15 1977-12-06 Alcan Research And Development Limited Apparatus and procedure for the belt casting of metal
US4505319A (en) * 1981-02-27 1985-03-19 Hitachi, Ltd. Continuous sheet metal casting device
US4510990A (en) * 1982-08-30 1985-04-16 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Continuous casting apparatus with shrinkage compensation
US5160611A (en) * 1988-09-07 1992-11-03 Lenox Institute For Research, Inc. Apparatus for aerating water

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444689A1 (de) * 1984-12-07 1986-01-16 Fried. Krupp Gmbh, 4300 Essen Fuehrungseinrichtung an den giessbaendern einer doppelbandstranggiesskokille
DE102010046292A1 (de) 2009-12-29 2011-06-30 SMS Siemag AG, 40237 Stranggießanlage und Verfahren zum Stranggießen
DE102011078370A1 (de) 2011-06-29 2013-01-03 Sms Siemag Ag Verfahren zum Stranggießen eines Gießstrangs und Stranggießanlage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US594583A (en) * 1897-11-30 Casting apparatus
GB491341A (en) * 1936-07-15 1938-08-31 Metal Carbides Corp Improvements in or relating to the casting of metal
FR66280E (fr) * 1954-05-10 1956-06-28 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
US2956320A (en) * 1955-12-28 1960-10-18 Olin Mathieson Casting of metal
US3226782A (en) * 1963-03-01 1966-01-04 United States Steel Corp Variable-taper casting mold

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US594583A (en) * 1897-11-30 Casting apparatus
GB491341A (en) * 1936-07-15 1938-08-31 Metal Carbides Corp Improvements in or relating to the casting of metal
FR66280E (fr) * 1954-05-10 1956-06-28 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
US2956320A (en) * 1955-12-28 1960-10-18 Olin Mathieson Casting of metal
US3226782A (en) * 1963-03-01 1966-01-04 United States Steel Corp Variable-taper casting mold

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799239A (en) * 1968-11-26 1974-03-26 Siderurgie Fse Inst Rech Method for continuous casting of metal
US4008750A (en) * 1975-04-15 1977-02-22 Alcan Research And Development Limited Continuous casting of metals
US4061178A (en) * 1975-04-15 1977-12-06 Alcan Research And Development Limited Continuous casting of metal strip between moving belts
US4061177A (en) * 1975-04-15 1977-12-06 Alcan Research And Development Limited Apparatus and procedure for the belt casting of metal
US4049042A (en) * 1976-03-31 1977-09-20 Gte Laboratories Incorporated Apparatus for continuous casting
US4505319A (en) * 1981-02-27 1985-03-19 Hitachi, Ltd. Continuous sheet metal casting device
US4510990A (en) * 1982-08-30 1985-04-16 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Continuous casting apparatus with shrinkage compensation
US5160611A (en) * 1988-09-07 1992-11-03 Lenox Institute For Research, Inc. Apparatus for aerating water

Also Published As

Publication number Publication date
BE696577A (de) 1967-09-18
DE1558259A1 (de) 1970-04-02
ES338758A1 (es) 1968-04-01
DE1558259B2 (de) 1974-03-07
DE1558259C3 (de) 1974-10-10
AT268570B (de) 1969-02-10
FR1483849A (fr) 1967-06-09
GB1181453A (en) 1970-02-18
CS158199B2 (de) 1974-10-15
SE320158B (de) 1970-02-02
LU53344A1 (de) 1967-06-05
CH467121A (fr) 1969-01-15

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