US3603377A - Curvilinear mold and secondary cooling system for continuously cast metal - Google Patents

Curvilinear mold and secondary cooling system for continuously cast metal Download PDF

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Publication number
US3603377A
US3603377A US571305A US3603377DA US3603377A US 3603377 A US3603377 A US 3603377A US 571305 A US571305 A US 571305A US 3603377D A US3603377D A US 3603377DA US 3603377 A US3603377 A US 3603377A
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United States
Prior art keywords
rollers
billet
curvilinear
mold
bars
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Expired - Lifetime
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US571305A
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English (en)
Inventor
Georgy Lukich Khimich
Vitaly Maximovich Niskovskikh
Alexei Ivanovich Varaxin
Evgeny Jukhimovich Gelfenbein
Vladimir Alexandrovich Bykov
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Individual
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Individual
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Priority claimed from SU1021693A external-priority patent/SU276338A1/ru
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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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1288—Walking bar members

Definitions

  • a plant for continuously casting metal including an oscillating curvilinear mold. Adjacent the curvilinear mold and defining a further curvilinear path exists a system for secondary cooling.
  • the secondary cooling system comprises a series of curvilinear walking bars for maintaining the desired shape of the billet and for pulling the ingot from the mold. Adjacent the bars exist two rows of rollers above and below the path of the billet, the rollers defining the curvilinear path of the billet such that the radius of curvature becomes increasingly continuously greater to an infinite value. There then may be a rectilinear path of rollers, followed by a cutting device for cutting the continuous billet into usable lengths.
  • the present invention relates to plants for continuous casting of metal.
  • the system for the secondary cooling is designed in such a manner that it retains the billet to be crystallized within the curvilinear section, and after complete crystallization, the billet is straightened by straightening devices and led out along a horizontal line.
  • the productive capacity and height of these plants depend upon the radius of curvature of the mold, which, in its turn, determines the possible length of the system of the secondary cooling and the speed of the billet to be crystallized passing through the plant.
  • An object of the present invention is to provide such a plant for continuous casting of metal which would be capable of effecting the casting of metal at high-casting speeds and maintain a high quality of the billets obtained.
  • Another object of the present invention is to decrease the height of the continuous casting plant to the minimum value.
  • the system for secondary cooling is essentially a structure composed of walking curvilinear bars with two rows of rollers straightening the billet to be crystallized mounted behind the bars along an extended curve of the radius of curvature of the walking bars, which curve gradually increases from the radius of curvature of the walking bars to an infinite value.
  • roller zone of the system for secondary cooling it may be provided with a rectilinear section complete with rollers being an extension of the curvilinear section.
  • rollers of the lower row should be, at least partially, driven.
  • rollers there may be provided sprayers for supplying cooling fluid.
  • FIG. 1 is a side elevational in partial cross section of a general view of the plant according to the present invention
  • FIG. 2 is a cross-sectional view, taken along the line Il-ll of FIG. 1;
  • FIG. 3 is a cross-sectional view, taken along the line III-III of FIG. 1.
  • the plant for continuous casting of metal comprises a working platform 1 (Fig. 1), on whicha carriage 2 is mounted on rails.
  • An intermediate vessel 3 is mounted on the carriage 2, said vessel being provided with a nozzle 4 for tapping the metal.
  • a system of the secondary cooling comprising walking curvilinear bars 7, moving along guides 8, and a roller zone, composed of two rows of rollers 9 and 10 retaining a billet 11 to be crystallized both from above and below, and also straightened.
  • the walking curvilinear bars ensure the drawing of the billet 11 from the mold 5 simultaneously with the cooling thereof without any deformation of its skin, and the preservation of correct geometrical shape of the cross section of the billet I l.
  • the law of plotting the curve is selected in such a manner that with the maximum speed of casting, the straightening of billet 11 occurred at deformation speeds that do not exceed the admissible ones.
  • rollers of the lower (10) and upper (9) rows are mounted in bores of housings 12 and 13 (FIG. 2).
  • the housing of the lower row 10 is disposed on the foundation on different heights, while the housing of the upper row 9 is connected to the housing of the lower row '10 by means'of a rod 13a.
  • the section L of the two rows 9 and 10 of the rollers is disposed along the curve, and is extended by a rectilinear section L (FIG. 1) of these rows of rollers, which increases the extension of the system for secondary cooling without an increase in the height of the whole plant.
  • rollers 1-4 of the lower row 10 along the whole length of the roller zone are provided with a drive 15, composed of a reducing gear 16 (FIG. 2) and an electric motor 17, while rollers 18 (FIG. 1) of this row are not driven.
  • the arrangement of the driven rollers 14 in alternate order with nondriven rollers 18 provides for their adjustment with a minimum pitch.
  • the billet 11 is cooled with water supplied through sprayers 19 disposed between the mold 5 and walking bars 7, and sprayers 20 provided in the lower 9 and upper rows 10 of the roller zone.
  • the adjustment of the spacing of the walking bars 7 and two rows 9 and 10 of the rollers is effected with due account of the contraction of billet 11 during its crystallization and cooling.
  • a gas-cutting machine 22 For cutting up the continuous billet l1 emerging from the system for secondary cooling, there is employed a gas-cutting machine 22, while for handling the cutoff portion 23 of the billet 11 there is provided a roller table 24.
  • a dummy bar (which is not shown in the drawings) covering the mold bottom with its head.
  • the intermediate vessel 3 is place-d over the curvilinear mold 5 in such a manner that the nozzle 4 should be disposed above its cavity.
  • the intermediate vessel 3 is filled with molten metal, flowing via the nozzle 4 into the cavity of the curvilinear mold 5, wherein there occurs the initial crystallization of the molten metal.
  • the crystallizing metal disposing itself along the internal surface of the curvilinear mold 5 and the surface of the dummy bar surface, forms a billet (ingot) 11 with a liquid phase therein, whose skin adheres to the surface of the dummy bar head.
  • the body of the dummy bar (which is not shown in the drawing) is located between the working surfaces of the walking curvilinear bars 7.
  • the walking curvilinear bars 7 gradually extract the dummy bar, and together with it the billet ll to be crystallized, from the curvilinear 5.
  • the billet 11 is cooled with water supplied by sprayers 19, disposed between the curvilinear mold 5 and walking curvilinear bars 7. When the billet 11 reaches the working surfaces of the walking bars 7 the billet is further cooled, through its contact with the cooled walking bars.
  • the walking curvilinear bars 7 have a radius of curvature equal to the radius of curvature of the inner walls of mold 5.
  • the walking bars contact the billet perpendicular to its top and bottom faces and move the billet along the curvilinear path in known manner, as seen for example in US. Pat. No. 2,895,l90.
  • FIG. 3 some of the walking bars are shown in clamped position, and other of the walking bars are shown in retracted position.
  • the molten metal is continued to be supplied into the latter so that there occurs a continuous forming of billet 1 1.
  • the latter is vibrated in an oscillating manner by means of an oscillating mechanism 6 simultaneously with a supply of a lubricating substance placed in the cavity of the mold 5.
  • the billet thus continuously formed is fed by the walking bars 7 into the roller zone.
  • the crystallizing billet 11 is moved by driven rollers 14 between the two rows 9 and 10 of the rollers provided within the section L having a curve whose radius of curvature gradually increases from the radius of curvature of the walking bars 7 to an infinite value, which ensures a progressive straightening of the billet ll, which operation is effected under the conditions where the liquid phase is present inside said billet 11.
  • the billet 11 is directed into the rectilinear section L, of the roller zone.
  • the cooling of the crystallizing billet 11 in the roller zone is effected by water supplied through sprayers 20.
  • a plant for continuously casting metal comprising an intermediate vessel; a curvilinear mold positioned under said vessel, said mold having oscillating means; a system adapted to secondarily cool the continuously cast billet comprising a series of walking curvilinear bars juxtaposed said mold along the curvilinear path of said billet and having the same radius of curvature as said mold, said bars adapted to pull said billet from said mold and maintain its desired shape, two rows of rollers mounted adjacent said bars and above and below the curvilinear path of said billet, said rollers defining said curvilinear path such that the radius of curvature becomes increasing continuously greater to an infinite value; and a device adapted to cut the continuous billet emerging from said secondary cooling system.
  • a plant according to claim 1 wherein for increasing the roller zone of said system of secondary cooling it is provided with a rectilinear section complete with rollers, being essentially an extension of said continuously varying curvilinear section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US571305A 1965-08-09 1966-08-09 Curvilinear mold and secondary cooling system for continuously cast metal Expired - Lifetime US3603377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1021693A SU276338A1 (ru) 1965-08-09 Установка непрерывной разливки металлов

Publications (1)

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US3603377A true US3603377A (en) 1971-09-07

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US571305A Expired - Lifetime US3603377A (en) 1965-08-09 1966-08-09 Curvilinear mold and secondary cooling system for continuously cast metal

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BE (1) BE685269A (en))
GB (1) GB1161556A (en))
SE (1) SE302024B (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729048A (en) * 1970-06-18 1973-04-24 E Gelfenbein Continuous metal-casting plant
US4390057A (en) * 1979-12-11 1983-06-28 Mecan Arbed S.A. Curved continuous-casting mold and method of reestablishing the internal dimensions thereof
US6315030B1 (en) * 1999-01-13 2001-11-13 Danieli & C. Officine Meccaniche S.P.A. High speed continuous casting device and relative method
US6321827B1 (en) * 1997-09-04 2001-11-27 Mannesmann Ag Supporting roll framework for continuous metal, especially steel casting plants

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US546415A (en) * 1895-09-17 Harvester-platform and carrier
US2818616A (en) * 1954-07-15 1958-01-07 Continuous Metalcast Co Inc Apparatus for the continuous casting of metals
US2895190A (en) * 1955-09-12 1959-07-21 Mannesmann Ag Continuous casting plants
FR1212002A (fr) * 1952-04-18 1960-03-21 Dispositif de transport et de cardage de matières de rembourrage
US2947075A (en) * 1956-09-21 1960-08-02 Moossche Eisenwerke Ag Method for the continuous casting of metal strip, and strip casting plant for carrying out the method
US3290741A (en) * 1960-11-18 1966-12-13 Olsson Erik Allan Methods of bending casting in a continuous casting process
US3324931A (en) * 1963-05-03 1967-06-13 Mannesmann Ag Method of deflecting towards the horizontal a curved continuously cast descending billet
US3346036A (en) * 1964-01-16 1967-10-10 Boehler & Co Ag Geb Process for the continuous casting of tubular products

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US546415A (en) * 1895-09-17 Harvester-platform and carrier
FR1212002A (fr) * 1952-04-18 1960-03-21 Dispositif de transport et de cardage de matières de rembourrage
US2818616A (en) * 1954-07-15 1958-01-07 Continuous Metalcast Co Inc Apparatus for the continuous casting of metals
US2895190A (en) * 1955-09-12 1959-07-21 Mannesmann Ag Continuous casting plants
US2947075A (en) * 1956-09-21 1960-08-02 Moossche Eisenwerke Ag Method for the continuous casting of metal strip, and strip casting plant for carrying out the method
US3290741A (en) * 1960-11-18 1966-12-13 Olsson Erik Allan Methods of bending casting in a continuous casting process
US3324931A (en) * 1963-05-03 1967-06-13 Mannesmann Ag Method of deflecting towards the horizontal a curved continuously cast descending billet
US3346036A (en) * 1964-01-16 1967-10-10 Boehler & Co Ag Geb Process for the continuous casting of tubular products

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729048A (en) * 1970-06-18 1973-04-24 E Gelfenbein Continuous metal-casting plant
US4390057A (en) * 1979-12-11 1983-06-28 Mecan Arbed S.A. Curved continuous-casting mold and method of reestablishing the internal dimensions thereof
US6321827B1 (en) * 1997-09-04 2001-11-27 Mannesmann Ag Supporting roll framework for continuous metal, especially steel casting plants
US6315030B1 (en) * 1999-01-13 2001-11-13 Danieli & C. Officine Meccaniche S.P.A. High speed continuous casting device and relative method

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Publication number Publication date
SE302024B (en)) 1968-07-01
BE685269A (en)) 1967-01-16
GB1161556A (en) 1969-08-13

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