US3430684A - Continuously rotating vertical casting machine - Google Patents

Continuously rotating vertical casting machine Download PDF

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Publication number
US3430684A
US3430684A US530680A US3430684DA US3430684A US 3430684 A US3430684 A US 3430684A US 530680 A US530680 A US 530680A US 3430684D A US3430684D A US 3430684DA US 3430684 A US3430684 A US 3430684A
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US
United States
Prior art keywords
casting
rollers
machine
cage
mold
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Expired - Lifetime
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US530680A
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English (en)
Inventor
Louis Babel
Pierre Peytavin
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CIVILE D ETUDES DE CENTRIFUGAT
CIVILE D'ETUDES DE CENTRIFUGATION SOC
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CIVILE D ETUDES DE CENTRIFUGAT
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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
    • B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/144—Plants for continuous casting with a rotating mould

Definitions

  • the present invention relates to a machine for use in the continuous casting of solid or hollow castings, which are preferably circular in section, and are formed in rotating molds.
  • the casting turns at a substantial speed and is therefore subjected to a centrifugal effect which tends to displace the casting from the axis of rotation of the mold and cause movements which will adversely affect the formation of the casting during its solidification to an extent sufficient to seriously interfere with the operation.
  • the present invention relates to a machine which makes it possible to regulate the speed at which the cast ing descends while simultaneously guiding it on its course, without imposing any strains on it which might adversely affect the quality of the end product.
  • the object of the present invention is to provide a machine for advancing and guiding metallic castings which are being formed by a continuous rotary process, said machine being essentially characterized by the fact that the speed of travel of the casting is controlled by at least one pair of rollers which bear against the casting. These rollers are driven at a predetermined speed and may be moved symmetrically away from the axis of the casting.
  • This pair of rollers is mounted in a rigid cage which rotates about the axis of the casting at the same speed as the casting itself.
  • This cage is preferably mounted on two ball bearings, at least one of which may be moved toward and away from the axis of the casting in a plane perpendicular to said axis.
  • the machine comprises two pairs of driving rollers, one above the other.
  • a weight carried by a lever pivotally mounted to swing about a fixed point counterbalances the effect of centrifugal force on each roller and its support during their rotation.
  • These rollers may swing about a horizontal axis in such a manner as to vary the distance between the two rollers of each pair in proportion to any changes in the diameter of the casting.
  • rollers of each pair are kept in a symmetrical position relative to the axis of the casting, even though movable toward and away from each other, by fastening the supports for the rollers to two rods which are pivotally mounted on the ends of two swing bars pivotally attached at two points on opposite sides of the casting.
  • rollers of each pair are kept symmetrical with respect to the axis of the workpiece while being moved toward and away from each other because each roller support is fastened to a toothed sector which engages an identical toothed sector fastened to the support for the other roller of the same pair.
  • the two roller supports of each pair are connected by a strap resiliently mounted on the roller supports so that the rollers are kept at a certain distance apart unless the casting exerts against the rollers a predetermined separating force greater than that which the rollers can exert without being further separated.
  • each driving roller is fixed to a coaxial gear driven by a drive shaft about which the support for that roller swings.
  • the drive rollers mounted as hereinbefore described receive the casting immediately after it has been formed, but preferably after the casting has been vigorously cooled.
  • suitable cooling means Water jets for example
  • suitable cooling means which may be stationary, or mounted to turn at a speed different from that of the casting, are provided at the top of the mold.
  • Several pairs of freely rotating guide rollers are positioned below the cooling apparatus and mounted to separate while remaining in symmetrical positions relative to the axis of the casting when the casting exerts thereagainst a force exceeding a predetermined value, each of said pairs of guide rollers being driven around the axis of the casting at the same angular speed at which the casting rotates.
  • guide rollers may be positioned in the cooling zone, between the mold and the driving means.
  • the guide rollers are mounted to turn freely so as to conform to the motion of the casting resulting from its rotation and its speed of descent, so as to avoid causing any strain on the casting other than that required to keep it in line with the vertical axis of the machine.
  • the drive rollers which have the same characteristics as those which have been described and are of course also driven about the axis of the casting at the same angular speed at which the casting turns.
  • FIG. 1 is a schematic vertical section taken through a first embodiment of the machine according to the invention
  • FIG. 2 is a schematic vertical section taken through a second embodiment of this machine
  • FIG. 3 is a schematic sectional view taken along the line III-III of FIG. 4, showing the means for driving the rollers;
  • FIG. 4 is a schematic sectional view taken along the line IVIV of FIG. 3, showing how the driving rollers are mounted;
  • FIG. 5 is a top plan view of a device for separating the two rollers of a pair while still keeping them symmetrically positioned relative to the axis of the casting;
  • FIG. 6 is a sectional view on an enlarged scale taken along the line VI-VI of FIGURE 5 and showing the resilient mounting of the strap which connects the two rollers of each pair.
  • FIG. 1 shows a mandrel 1 which is introduced into the rotating mold 2 when hollow castings are to be produced.
  • the pipe 3, through which cold water is supplied to the inside of the mandrel 1, and the pipe 4 through which the water leaves the mandrel, are both schematically shown.
  • the mandrel 1 is supported by a carriage 5 which is vertically slidable in a stationary framework 6 and actuated by a hydraulic cylinder 7 (schematically shown) by means of which the mandrel may be lifted at will.
  • FIG. 1 also shows schematically the worm and tangent gear drives 8 which rotate the mandrel at an angular speed substantially equal to that of the mold 2 and also adjust within certain limits the eccentricity of the axis of the mandrel relative to that of the mold, as well as the angular direction of said eccentricity.
  • the chute 9 through which the molten metal is fed to the mold is also schematically illustrated in FIG. 1.
  • the described embodiment comprises two pairs of driving rollers, 10a, 10b, and 11a, 1112, which are mounted in a rigid cage 12 which turns on two roller bearings 13 and 14 shown schematically on the drawing.
  • the lower bearing 13 comprises a part-spherical race while the upper bearing 14 may be of the needle type.
  • the mold 2 rotates in bearing 14 and the cage is fastened to the stationary portion of the machine through a ball joint.
  • the position of the spherical abutment 13 may be adjusted with respect to the platform 15 by which it is supported in order to bring about a perfect alignment of the various parts of the machine relative to the vertical axis of the casting.
  • the cage 13 of the annular bearing race is held between fixed abutments 16 fastened to the platform 15 by screws 17 which make it possible to hold the cage 13 in different positions.
  • the cage 12 comprises a ring gear 18 which is driven by the gear 19 fixed to the shaft of the electric motor 20.
  • the speed of rotation of the cage 12 around the shaft of the casting 21 is equal to the speed of rotation of the mold 2, when the mold is fixed to the carriage 12, or even when the mold is mounted independently of the cage 12, in which case the mold is driven at the same speed by any suitable means.
  • Reference numeral 22 indicates a cooling device for projecting water onto the casting after it leaves the mold 2.
  • the cooling means 22 is mounted on means not shown which permits the device 22 to be held stationary or turn at a speed of rotation different from that of the casting so as to rapidly cool its surface.
  • the cage 12 also carries at its lower end a pair of guide rollers 23a and 23b turning loosely on their axes.
  • FIG. 2 schematically illustrates a second embodiment of the machine according to the invention, used to make solid cylindrical castings.
  • the machine illustrated in FIG. 2 could be used to make hollow castings
  • the machine illustrated in FIG. 1 could be used to produce solid castings.
  • FIG. 2 shows schematically the rotating mold 2, the cooling means 22 (which in this case comprises nozzles for projecting water which are fixed to the framework of the machine and are consequently stationary) and three pairs of guide rollers 23, as well as two pairs of drive rollers 10 and 11 mounted on a cage 12 which turns on bearings 13 and 14.
  • the cooling means for projecting water extends from the bottom of the mold 2 to the cage for the drive rollers, the guide rollers being regularly spaced over this interval and the water projecting nozzles being positioned between the guide rollers.
  • FIG. 2 also shows how the mold 2, guide rollers 23 and drive rollers 10 and 11 are driven by the motor 24 through gears mounted on the shaft 25 and additional gears fixed to the driven members.
  • FIGS. 3 and 4 show how the driving rollers are mounted.
  • FIG. 4 shows the rollers 10a, 10b, 11a and 11b of FIGS. 1 and 2.
  • Each roller is mounted on a support 26 pivotally attached to the cage 12 by means of a shaft 27.
  • the supports for the rollers 10a and 11a are pivotally mounted on the same shaft 27, as are the two supports for the rollers 10b and 11b.
  • a counterweight 28 pivotally attached at 29 to the cage 12 is fixed to a lever 30 connected through a rod 31 to the support 26 for each roller.
  • FIG. 3 shows schematically how the rollers are driven at a given speed.
  • FIG. 3 also shows how the supports 26 of the two rollers b and 11b are pivotally mounted on a shaft 27 mounted on the carriage 12, only a small part of which is shown in FIG. 3.
  • the shaft 27 is driven by a motor 32, which is schematically represented, and a worm and tangent gear transmission 33.
  • the axles 34 and 35 of the rollers 10b and 1112 each carry a gear 36 which engages a pinion 37 fixed to the shaft 27.
  • motor 32 drives the drive rollers 10b and 11b, but that the supports 26 for these rollers may nevertheless swing freely about the shaft 27.
  • the two rollers 10a and 11a are driven in an analogous manner and at the same speed.
  • FIG. 5 shows the mechanism which insures that the rollers will move symmetrically and the device which resists their separating.
  • the drive rollers 10a and 10b are each mounted on their support 26 which is pivoted on axle 27 not shown on FIG. 5.
  • Two swinging bars 38 and 39 are pivotally mounted at their centers on pins 40 fixed to the cage 12.
  • the ends of the swinging bars 38 and 39 are connected by bars 41 and 42 which have been shown as unitary bars for the sake of simplicity but may in practice comprise a plurality of articulated segments if this is necessary to produce a desired kinematic effect.
  • the support 26 for the rollers 10a is connected by a rod 43 to the bar 42, while the support 26 for the roller 10b is connected in the same way by rod 44 to the bar 41.
  • rollers 10:: and 11b may move away from each other, but must remain symmetrically positioned with respect to the axis of the casting 21, which is thus automatically guided and cannot leave the straight path which it should follow.
  • the pressure exerted by the two rollers 10a and 10b on the casting is produced by a strap 45 connected at its ends to two resilient devices 46 carried at the tops of the roller supports 26.
  • FIG. 6 shows the strap 45 as well as the member 47 which is pivotally connected to the support 26 of the roller 10a, thus permitting said supports to swing.
  • a rod 48 provided with a shoulder 49 has a threaded part 50 screwed into the member 47, while a shoulder 51a on the cup 51 bears on the edge of a hole in the strap 45.
  • the rod 48 supports a sleeve 52 which carries a set of resilient dished washers 53 which are retained between a flange 52a on the sleeve and a stop 54 keyed to the sleeve 52.
  • the resilient washers 53- When the resilient washers 53- are mounted on the sleeve they may be assembled in a more or less compressed condition, depending on the operating conditions expected to be encountered.
  • rollers 10a and 10b remain at the same distance from each other.
  • the resilient washers are additionally compressed, thus permitting a symmetrical separation of the rollers 10a and 10b to permit a temporarily excessive thickness of the casting.
  • the force which has been exerted on the resilient washers 53 to compress and hold them in place on the sleeve 42 must correspond exactly to the force which the casting 21 should exert against the rollers 10a and 10b in order to begin to move them further apart.
  • the use of the device according to the invention makes it possible to determine both the force exerted by the rollers on the casting and the force which these rollers continue to exert on the casting when they are separated by a given distance.
  • the guide rollers will not become effective as long as the casting remains in its normal position, but will act to return the casting to its proper vertical position whenever it departs therefrom. Moreover, these guide rollers will not prevent the passage of an unusually thick section of the casting.
  • Guide rollers of this type are provided, for example, at 23, 23a, and 23b in the two embodiments of the invention which have been hereinbefore described.
  • the machine according to the invention makes it possible to very effectively regulate the operating or casting speed of a rotating casting, while guiding it as strictly as necessary.
  • guide rollers may be used which are in groups other than pairs, such for example as sets of three rollers, or are positioned at three or more points equidistant from each other and the axis of the casting so as to converge toward it.
  • a rotary continuous casting machine apparatus for advancing and guiding the castings produced by said machine along a vertical axis
  • said apparatus comprising a cage mounted to rotate about said axis, means for rotating said cage at the same speed as said casting, and a plurality of pairs of rollers mounted in said cage, means mounting the two rollers of each pair symmetrically with respect to said vertical axis, each roller being mounted to swing about a different one of two axes lying in the same plane perpendicular to said vertical axis, the two rollers of each pair being mounted to apply equal pressure to diametrically opposite areas of said casting, and at least one pair of rollers being driven and axially advancing said casting, and means applying to said rollers a force urging them radially inward which is equal to the centrifugal force urging them radially outward which results from rotation of said cage.
  • a machine as claimed in claim 1 in which said guide rollers are mounted to swing about a fixed point and comprising a counterweight connected to each guide roller to urge each roller in one direction about said fixed point with a force equal to that exerted by centrifugal force on said roller to urge it in the opposite direction about said fixed point.
  • a machine as claimed in claim 2 comprising parallel motion linkage which constrain the rollers of each pair to diametrically opposed positions on opposite sides of said axis.
  • a machine as claimed in claim 2 comprising a set of intermeshing toothed members which constrain the rollers of each pair to diametrically opposed positions on opposite sides of said axis.
  • a machine as claimed in claim 2 comprising individual supports for each roller, together with means connecting the supports of each pair, said connecting means comprising a resilient component.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Moulding By Coating Moulds (AREA)
  • Press Drives And Press Lines (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Continuous Casting (AREA)
  • Metal Extraction Processes (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US530680A 1965-03-03 1966-02-28 Continuously rotating vertical casting machine Expired - Lifetime US3430684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7788A FR1468682A (fr) 1965-03-03 1965-03-03 Machine pour effectuer la coulée continue rotative d'ébauches métalliques

Publications (1)

Publication Number Publication Date
US3430684A true US3430684A (en) 1969-03-04

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ID=8572667

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US530680A Expired - Lifetime US3430684A (en) 1965-03-03 1966-02-28 Continuously rotating vertical casting machine

Country Status (11)

Country Link
US (1) US3430684A (fr)
AT (1) AT272547B (fr)
BE (1) BE677268A (fr)
CH (1) CH445730A (fr)
DE (2) DE1940642U (fr)
ES (1) ES323724A1 (fr)
FR (1) FR1468682A (fr)
GB (1) GB1134193A (fr)
LU (1) LU50562A1 (fr)
NL (2) NL6602721A (fr)
SE (1) SE300141B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752219A (en) * 1969-05-13 1973-08-14 Concast Ag Strand guide apparatus for continuous casting
US3804147A (en) * 1971-03-30 1974-04-16 Etudes De Centrifugation Continuous rotary method of casting metal utilizing a magnetic field
US3844332A (en) * 1971-11-05 1974-10-29 R Bucci Making seamless tubing by continuous process
US4196770A (en) * 1977-05-06 1980-04-08 Creusot-Loire-Vallourec Device for continuous casting of liquid metal especially steel
US4617067A (en) * 1981-08-06 1986-10-14 Vallourec Process for the production of semi-finished articles of hard steels using a continuous casting operation
US4905754A (en) * 1989-02-28 1990-03-06 Sumitec, Inc. Footroll assembly for a continuous casting apparatus
US5850871A (en) * 1996-04-04 1998-12-22 Ag Industries, Inc. Foot guide and control system for continuous casting machine
WO2018161156A1 (fr) * 2017-03-10 2018-09-13 8617490 Canada Inc. Appareil de coulée de forme tubulaire

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017108394A1 (de) * 2017-04-20 2018-10-25 Inteco Melting And Casting Technologies Gmbh Verfahren und Vorrichtung zum Herstellen von Gussblöcken aus Metall
CN114905016B (zh) * 2022-06-13 2024-01-12 武汉大西洋连铸设备工程有限责任公司 一种应用于铸坯凝固过程中的机械旋转搅拌装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1444953A (en) * 1923-02-13 Peocess and apparatus foe making seamless tubing
US1472719A (en) * 1919-06-09 1923-10-30 Horvath Geza Machine for making radiator tubes
US2284703A (en) * 1938-06-01 1942-06-02 Int Nickel Canada Method for continuously molding metals
US2408514A (en) * 1943-04-10 1946-10-01 Clarence W Hazelett Metalworking process and apparatus
US2429201A (en) * 1944-07-10 1947-10-21 Ohio Crankshaft Co Work feeding and rotating apparatus
US2752648A (en) * 1951-04-05 1956-07-03 Ile D Etudes De Centrifugation Apparatus for the production of tubular metallic objects
GB830852A (en) * 1957-01-11 1960-03-23 Boehler & Co Ag Geb Improvements in or relating to continuous casting plant
FR1228909A (fr) * 1959-03-16 1960-09-02 Dispositif d'entraînement pour alimenter en continu une machine transformatrice de barres, tubes ou fils machine
GB932196A (en) * 1960-09-24 1963-07-24 Concast Ag Improvements in or relating to continuous casting installations
GB950882A (en) * 1961-05-01 1964-02-26 Davy & United Eng Co Ltd Improvements in or relating to roll adjustment apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1444953A (en) * 1923-02-13 Peocess and apparatus foe making seamless tubing
US1472719A (en) * 1919-06-09 1923-10-30 Horvath Geza Machine for making radiator tubes
US2284703A (en) * 1938-06-01 1942-06-02 Int Nickel Canada Method for continuously molding metals
US2408514A (en) * 1943-04-10 1946-10-01 Clarence W Hazelett Metalworking process and apparatus
US2429201A (en) * 1944-07-10 1947-10-21 Ohio Crankshaft Co Work feeding and rotating apparatus
US2752648A (en) * 1951-04-05 1956-07-03 Ile D Etudes De Centrifugation Apparatus for the production of tubular metallic objects
GB830852A (en) * 1957-01-11 1960-03-23 Boehler & Co Ag Geb Improvements in or relating to continuous casting plant
FR1228909A (fr) * 1959-03-16 1960-09-02 Dispositif d'entraînement pour alimenter en continu une machine transformatrice de barres, tubes ou fils machine
GB932196A (en) * 1960-09-24 1963-07-24 Concast Ag Improvements in or relating to continuous casting installations
GB950882A (en) * 1961-05-01 1964-02-26 Davy & United Eng Co Ltd Improvements in or relating to roll adjustment apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752219A (en) * 1969-05-13 1973-08-14 Concast Ag Strand guide apparatus for continuous casting
US3804147A (en) * 1971-03-30 1974-04-16 Etudes De Centrifugation Continuous rotary method of casting metal utilizing a magnetic field
US3844332A (en) * 1971-11-05 1974-10-29 R Bucci Making seamless tubing by continuous process
US4196770A (en) * 1977-05-06 1980-04-08 Creusot-Loire-Vallourec Device for continuous casting of liquid metal especially steel
US4617067A (en) * 1981-08-06 1986-10-14 Vallourec Process for the production of semi-finished articles of hard steels using a continuous casting operation
US4905754A (en) * 1989-02-28 1990-03-06 Sumitec, Inc. Footroll assembly for a continuous casting apparatus
US5850871A (en) * 1996-04-04 1998-12-22 Ag Industries, Inc. Foot guide and control system for continuous casting machine
WO2018161156A1 (fr) * 2017-03-10 2018-09-13 8617490 Canada Inc. Appareil de coulée de forme tubulaire
US10946438B2 (en) 2017-03-10 2021-03-16 8617490 Canada Inc. Tubular shape casting apparatus

Also Published As

Publication number Publication date
DE1508947A1 (de) 1969-11-13
DE1508947C3 (de) 1974-09-05
LU50562A1 (fr) 1967-09-05
NL133438C (fr)
ES323724A1 (es) 1967-01-16
DE1508947B2 (de) 1974-01-31
DE1940642U (de) 1966-06-16
SE300141B (fr) 1968-04-08
FR1468682A (fr) 1967-02-10
GB1134193A (en) 1968-11-20
AT272547B (de) 1969-07-10
NL6602721A (fr) 1966-09-05
CH445730A (fr) 1967-10-31
BE677268A (fr) 1966-09-02

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