US3056179A - Control device for a molten-metal pouring ladle in a centrifugal casting machine - Google Patents

Control device for a molten-metal pouring ladle in a centrifugal casting machine Download PDF

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US3056179A
US3056179A US43168A US4316860A US3056179A US 3056179 A US3056179 A US 3056179A US 43168 A US43168 A US 43168A US 4316860 A US4316860 A US 4316860A US 3056179 A US3056179 A US 3056179A
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Prior art keywords
pouring
basket
ladle
pipe
casting
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US43168A
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English (en)
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Lorang Pierre Edouard
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Pont a Mousson SA
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Pont a Mousson SA
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H1/00—Marking textile materials; Marking in combination with metering or inspecting
    • D06H1/02—Marking by printing or analogous processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/107—Means for feeding molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/12—Controlling, supervising, specially adapted to centrifugal casting, e.g. for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/003—Special types of machines for printing textiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F3/00—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
    • B41F3/02—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed with impression cylinder or cylinders rotating unidirectionally
    • B41F3/12—Twin presses, i.e. with more than one cylinder or type-bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/07—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors
    • G05B19/075—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors for delivering a step function, a slope or a continuous function

Definitions

  • the present invention relates to the casting of castiron or another molten metal in centrifugally casting machines for pipes and similar tubular articles, and more particularly, to a control device for high-capacity pouring ladles or baskets of the type involving a succession of tippings separated by stops and partial return motions, whereby several pipes can be sequentially cast from a single molten-metal feed previously poured into the ladle, i.e. in the course of a single pouring cycle.
  • the metal feed rate has to be constant and readily reproducible, where the production is to be conducted on an industrial scale.
  • the casting ladle should preserve, from one cycle to the next, an absolutely constant capacity and, the more so, crosssection, such that at a given tipping speed, the pouring rate of molten metal should always be the same.
  • this condition is practically impossible to fulfill, owing to the more or less regular wear of the refractory lining of the casting ladle and the slag and dross deposits on said liner. These surface unevennesses of the liner also lead to slight variations in the cast-iron level in the ladle at the termination of successive impulsions relative to the bottom of the ladle.
  • the object of the present invention is to provide a control device of a tiltable feed ladle of the aforesaid known type, wherein each feeding of the ladle or basket can be followed by a cycle comprising a plurality of sequential casting steps, said control device being improved in that it enables the pouring rate and the amount of poured molten metal to be automatically maintained at a constant level and be accurately reproduced from one casting cycle to the next, irrespective of the internal-surface irregularities of the casting ladle.
  • This control device which is of the type including a hydraulic jack means adapted to tilt or rock the ladle about the rotational axis thereof, comprises in combination with said jack means: two electric pumps, one for pouring and the other for impelling, these pumps having parallel outputs into said jack; two independent electric circuit means supplying said electric pumps; a photoelectric cell sensitive to the appearance of molten metal at the pouring edge of the ladle; means controlled by said cell for rendering inoperative from the moment of said appearance the impelling electric pump; a plurality of rheostats connected in the supply circuit of the pouring electric pump, said rheostats being adapted to effect an individual speed regulation thereof for a given fraction or portion of the total tilting stroke of the ladle; and cam means integrally rotated with the ladle to individually and successively operate each of said rheostats in order to adjust at will in each fraction the drive speed of the pouring electric pump.
  • both electric pumps discharge in parallel into the tilter jack and, owing to the large output provided thereby, the initial tilting is rapid and supplies the required impulse, which is discontinued as soon as the molten metal in the ladle reaches the pouring edge thereof, due to the operation of the cell;
  • a single rheostat provides for the adjustment of the casting of all the pipes of the same order during each casting cycle; in the latter case, the pipe of a given order in each casting cycle is subjected to adjustment by a plurality of rheostats.
  • the invention further contemplates the provision of a centrifugal casting unit for pipes and other tubular articles, of the type including a rotary mold and a casting ladle, and provided with the aforesaid improved control device.
  • FIG. 1 is a diagrammatic view, seen before the casting
  • FIG. 2 is a view partly in transverse elevation and partly in section of the casting ladle along line 2-2 of FIG. 1.
  • FIG. 3 is a diagram of the electric circuit means'for the control device of the casting ladle;
  • the invention is applied to a casting ladle or basket 1 having substantially the shape of a cylindrical sector of large capacity, able of containing cast-iron or another liquid metal In in an amount suflicient for the successive castings of a plurality of pipes, e.g. six, these six casting operations forming what will be referred to as a casting cycle.
  • This basket 1 comprises a cylindrical wall 2 (FIGS. 1 and 2) of an axis XX, two plane circular lateral sectors 3, parallel to each other, and a plane wall 4 affording at the upper portion thereof, intermediate the two circular sectors 3, a pouring spout 5.
  • This basket is exteriorly provided, on its side walls 3 and adjacent the pouring spout 5, with a pair of trunnions 6 of axis XX and rotating in bearings carried by parallel uprights 7 forming the frame of the basket.
  • One of the trunnions 6 has keyed at the end thereof a circular cam member 8 (FIGS. 1, 2, having formed in the periphery thereof two notches 9 and 9a whose function will be made clear later on.
  • an overflow 10 extending into a channel member 11 overbearingly mounted on a frame 12.
  • This channel 11 is adapted to supply with cast iron the mold 13, rotatable about a substantially horizontal axis W-W of the centrifugal casting machine.
  • This mold 13 is rotatably mounted within the movable part M of the machine, said part forming around the mold 13 a jacket 14 and rolling by means of rollers 15 on a rolling track 16 parallel to the channel 11; it is capable of being reciprocated together with the mold, e.g. by means of a hydraulic jack 17 having a piston member 18 and a rod 19 connected by an extension arm 20 to the unit 14.
  • the basket 1 is combined with the hydo-electric control device, embodying the hydraulic jack V, and improved in accordance with the invention.
  • the basket 1 is provided at the lower portion of its cylindrical surface 2 with a stirrup 21 having pivotally mounted thereon the end of the rod 22 of the piston 23 of the single-acting jack V.
  • the lower end of the jackcylinder 24 is articulated about a pin 25 on a stirrup 25a secured on the ground in a position such that the jack is slightly tilted to the vertical along a direction substantially tangential to the cylindrical surface 2, when the basket is in its feeding position prior to the casting step (FIG. 1).
  • the lower portion of the jack casing 24 has a duct 26 extended thereinto.
  • This duct is connected to a first selector S of the three-positional slide-valve 27 type, which is for example hand-actuated as a function of the longitudinal shifts of the movable part M of the centrifugal machine.
  • This selector has further connected thereto,
  • an oil pressure inlet pipe 28 extending from an electric pump P referred to as pouring pump, which sucks in this oil through a pipe 29 from a tank B, and on the other hand, a pipe 30 discharging into said tank.
  • valve 27 plugs the pipes v 28 and 30. Jack V is then neither fed nor discharging;
  • valve 27 establishes communication between the pressure oil-inlet pipe 28 with the pipe 26.
  • the piston 23 of jack V is then set on its upward stroke and lifts the basket 1 through the piston-rod 22, said basket being then rocked or tilted about the axis XX in the direction shown by arrow 1"; this position will be termed the pouring position.
  • valve 27 brings into communication the pipe 26 with the discharge pipe 30, this being the lowering position of the basket, i.e. wherein it is rotated in the direction opposite to the arrow F.
  • the pipe 26 has connected therewith in parallel a bypass 311 leading to a three'way valve J of the type comprising slide 32, able to assume two positions.
  • This slide is extended beyond the valve body, to the left, by means of a rod 33 ending by a flange or collar 34 and, to the right, by a rod 35 attractable by a solenoid E against the urging of a spring 36 coiled round the rod 33 and compressed between the valve body and the flange 34-.
  • One of the three ways afforded by the valve J consists of a duct 31; the two other ways are respectively: a duct 31a connected to a further three-way selector S and a discharge duct 39.
  • the selector S which is similar to the selector S is specifically designed such that the slide 27a thereof for-ms an extension of the slide 27 of selector S being integrally movable therewith.
  • This selector S has extended thereint-o an oil-pressure inlet pipe 37 from an electric pump P referred to as impelling pump, which sucks this oil through a pipe 38 from the tank B; a duct Stia is adapted to return this oil from theselector S into the tank B.
  • Pipes 31a, 37 and 30a are located in relation to the selector S in a manner similar to the location of the pipes 26, 28 and 30 with respect to the selector S
  • the slide 32 of valve J When the solenoid E is energized, the slide 32 of valve J is in its right-hand position, the pipe 31 connected with the jack V is plugged, whereas the discharge duct 31a of the pump S across the selector S is in communication with the discharge pipe 39.
  • This position is the inoperative or neutralized position of the pump S
  • the solenoid E is no longer energized, the slide 32 is returned leftwards by the spring 36; the discharge pipe 31a of the pump S across the selector S is then set into communication with the jack through the pipe 31; while the discharge pipe 39 is plugged. This is the operative position of the pump S (FIG. 1).
  • the slide 41 is extended beyond the valve body K, to the right, by a rod 43 ending with a flange 44 and, to the left, by a rod 45 attractable by a solenoid E against the opposition of a spring 46 coiled around rod 43 and compressed between the valve body K and the flange 44.
  • a main two-wire electric circuit 47 (FIG. 1), connected with a DC. supply U, has shunted therefrom a two-wire supply circuit 48 for the solenoid E
  • the circuit 48 is controlled by a contactor C whose closing corresponding to energization of the solenoid, is contrlled by a phtocell 49 arranged in front of the pouring spout 5 of the basket 1 and responsive to infra-reds transmitted from the molten cast-iron, when it appears at the spout 5.
  • the photocell 49 is, as known per se, series connected at y, z with a micro-relay 50 of a lowcurrent electric circuit.
  • This micro-relay is adapted to close a contactor C of a higher-current circuit supplying a relay 51 which in turn acts on the contactor C
  • the solenoid E is fed by a two-wire circuit 52 connected with the main circuit means 47 and controlled by the member C of a double contactor C C which may for instance be manually actuated.
  • the pouring motor pump P has electric current supplied thereto through a two-wire circuit S in parallel with the main circuit 47.
  • This circuit 53 includes in series a rheostat R for adjusting the basic speed of the motor of the electric pump P and a plurality of precision adjusting rheostats on either side of this basic speed, e.g..
  • rheostats R R R These precision rheostats adapted to adjust the rotational speed of the basket in relation to the surface irregularities thereof (slag deposits or, on the contrary, wear of the refractory liners), with the view to maintain the flow rate of the cast iron at a constant level, can be operated in turn, the functioning of one of them precluding the operation of any other, the means for achieving said result being explained later on.
  • Each of these six rheostats corresponds to one sixth of the total rotational angle of the basket.
  • the circuit 53 is further disconnectable by portion C of the double contactor (C -C said portion C being connected in series with the rheostats R R upstream thereof relative to the connection point with the main circuit 47.
  • the conactors C and C are coupled in such a way that when one of them is open, the other is closed and vice-versa.
  • Each of the rheostats R R is shunted by means of a lead 54-, having series-connected thereon a contactor 1,, I or I
  • These contactors are controlled by relays M M fed through switches i i by circuits such as 55 connected in parallel on the main circuit 47.
  • the six contactors i i are mounted (FIG. 4) about the c am member 8 and angularly spaced by one sixth of the total rotational angle of the basket 1. They cooperate with the notch 9 formed in the periphery of the cam 8 along an accurate path corresponding to the sixth of the total rotational angle of the basket.
  • Cam member 8 is keyed on the trunnion 6 such that when the basket is in its lowermost starting position (FIGS. 1 and 5), the movable member 56 of contact-or i falls into the forward end of notch 9 (seen in relation to the direction of rotation f, of the basket and of the cam '8).
  • every successive precision rheostat R R is made operative, exclusive of all the others, as the basket 1 continues its tilting or rocking motion, the duration of operation of each rheostat corresponding to one sixth of the total tilt of the basket.
  • the basket 1 is thus theoretically divided into six portions or fractions x x (FIG. 4) having the same center-angle at about the axis XX.
  • Each x thus corresponds to one sixth of the entire amount of liquid castiron in (FIG. 1) which has to be contained in the basket 1 to effect the casting of six pipes, each of which corresponds to one such slice.
  • lamps L L can be lit in succession in the course of the rotational cycle of basket 1, signalling both the position of the basket and the particular rheostat which is operative at that time.
  • lamps L L are preferably mounted on a control desk 59 (FIG. "1) adjacent the individual control wheels 69 controlling the operation of each rheostat R vFinally, the motorpump set P is fed through a two- .wire circuit 61, connected in parallel with the main cir- .cuit 47, 48.
  • a central switch is provided at 62 at the circuit inlet. The operation is as follows:
  • slides 27 of selector S and 27a of selector S are in their median position in which the basket is stationary (position of FIG. 1), and the slide 32 of the valve J is in its left-hand position for actuation of the pump P
  • the slide 41 of the valve K is in its righthand position to close the pipe 40.
  • the movable part of the centrifugally casting machine M is in its outermost right-hand position.
  • the jack 17 is fed, as known per se and accordingly not illustrated, to provide a leftward motion for the centrifugal machine towards the casting channel 11.
  • slides 27 and 27a of selectors S and S respectively are pushed by hand to the left and electric pumps P and P are supplied with pressure by closing the central switch 62.
  • the electric circuit 61 of the impeller electric pump P is thus automatically closed.
  • the piston 23 of jack V lifts then rapidly the basket 1 until appearance of cast-iron at the casting spout 5. This is the impeller phase.
  • the impeller stage is represented by the segment a -b
  • the energized photocell 49 closes the contactor C thus energizing the solenoid E and displacing to the right the slide 32 of valve J to a position in which the pump P is inoperative. Since the output of this pump is now directed to the discharge, the pump P is the only one which continues to supply the pipe 26.
  • the tilting of the basket 1 is nevertheless continuing but at a slower rate, Accordingly, after the impulsion which causes the cast-iron to overflow over the edge of the spout 5 and towards the weir 10, the melt flow into their weir, channel 11 and into the mold 13 at a predetermined speed which is a function of the output of pump P
  • the movable portion M of the machine reaches its outermost left-hand position,'when the cast-iron is in the extreme right-hand end of channel 11 and starts receding to the right from this moment on. This is the pouring stage shown in FIG. 5 by the segment b -c and the difference of ordinates between the points b 0 corresponds to a tilt by angle x (FIG. 4), i.e. the first pouring fraction.
  • the precision adjustment of the rotational speed of the basket during the pouring step is effected as follows: (FIGS. 3 and 4)
  • the contactor i is manually closed, thus closing the feed circuit 55 of relay r
  • This relay opens the contactor I and renders operative the rheostat R Since the remaining contactors i i are open, the relays r r are not fed and the rheostats R R remain shorted by their respective shunts 54, and thus inoperative.
  • only the contactor j is closed owing to the engagement of its movable member 58 into the notch 9a and only the lamp L is lit.
  • This lamp accordingly signals the rheostat R which will have to be acted upon manually through the corresponding control wheel 60 (FIG. 1) to slightly modify from the next six-cast cycle on, the pouring speed corresponding to the first cast of each cycle and thus the flow rate of the cast-iron, in case the pipe cast in the first cycle is slightly too heavy or slightly too light.
  • Lamp L remains lit and rheostat R remains operative as long as contactors i and are engaged in the notches 9 and 9a, i.e. during the rotational fraction x of the basket or the pouring of the metal corresponding to the casting of the first pipe.
  • the third pipe is slightly underweight or slightly overweight whereas the preceding pipe was adequate, this implies the existence of some localized irregularity of the basket shape in the corresponding tilting fraction x lamp L which lights up sends a signal to warn that the corresponding rheostat R requires adjustment, and this rheostat will accordingly be acted upon to correct the rotational speed of the basket for this third tilting step and adjust the pouring output thereof.
  • the basket resumes automatically the speed it had before this last adjustment, as the rheostat R is by then shorted.
  • each tilting angle x x corresponds to a fraction of the weight of one pipe and accordingly the rheostat associated with this angle has influence only on said weight fraction of the pipe.
  • each rheostat will be operative only with respect of the half of each pipe.
  • two lamps L will be sequentially lit during the casting of the same pipe, indicating the two rheostats which will have to be acted upon, if necessary, for a subsequent adjustment of that same pipe during the next cycles.
  • the molten metal output is constant and the operator can be certain that the amount of melt supplied to the mold will always be the same and that the obtained pipes will be accordingly of the correct weight and regular wall thickness.
  • the notch 91: of the first illustrated example (FIG. 4) is replaced by a notch 9b offset to the rear (direction opposite to that of arrow i in relation to said notch 9a by an amount equal to half the centre angle x of a tilting fraction.
  • the basket is at the start in a tilted position in order to bring the metal level to the proximity of the pouring spout 5'.
  • An impulse stage will thus be sufficient to cause the melt to overflow over the spout and initiate the casting.
  • the com tactor i is engaged into the notch 9b.
  • Lamp L is ac cordingly lit, showing that the second half of the second fraction has been by-passed and that, accordingly, said second fraction has but little influence on the weight of the pipe.
  • the third fraction x is rapidly initiated, thus closing the contactor i energizing the rheostat R and deenergizing the rheostat R
  • contactor i is disengaged from the notch 9b of cam 8, while the contact i is engaged thereinto. Lamp L lights up.
  • This lamp L remains lit until the end of the first pipe casting, since this pipe is completed after the pouring of the metal corresponding to the second half of the fourth fraction x and corresponds at a rotational point of cam 8 at which the notch 91; confronts the contactor j Owing to the lighting of lamps L and L after the initiation of the cast, the operator is aware that the third and fourth fraction x and x.; of pouring have influence on the major part of the weight of the first pipe, and that the rheostats R and R are the ones to be acted upon to modify the pouring speed, if the first pipe is too heavy or too light.
  • the invention which has been described in connection with a transliding-type of centrifugal machine, of the De Lavaud type can also be applied to machines having no transliding motion, such as a machine of the Arens type.
  • the basket tilting can also be divided in any desired number of fractions concentrically located in respect to the axis X-X, in accordance with the number of pipes to be cast in succession with a single filling of the basket, and also as a function of the desired precision in the pouring speed, which depends in turn on the allowed tolerances in the manufactured product weight.
  • slides 27 and 27a of the respective selectors S1 and S2 controlling the motion of the basket can be automatically actuated by means known per se, as a function of the moving rate of the part M of the machine.
  • the lagging of the lamp lighting can be achieved by other known means, for example, by delaying relays.
  • a hydraulic jack to tilt said feed ladle about said axis; an electric pouring pump and an electric impelling pump, said pumps discharging in parallel into said jack; a main supply circuit; two independent electric supply circuits for these electric pumps and connected with said main circuit; a photocell responsive to appearance of molten metal at the pouring edge of the ladle; means controlled by this cell to render the impeller electric pump inoperative as soon as the met-a1 makes its appearance at said pouring edge; a plurality of manually adjustable rheostats in the supply circuit of the pouring electric pump, these rheostats enabling the speed of said pouring electric pump to be individually and manually adjusted for a given fraction of the total tilting angle of
  • a hydraulic jack to tilt said feed ladle about said axis; an electric pouring pump and an electric impelling pump, said pumps discharging in parallel into said jack; a main electric supply circuit; two independent electric supply circuits for these electric pumps and connected with said main electric circuit; a photocell responsive to appearance of molten metal at the pouring edge of the ladle; means controlled by this cell to render the impeller electric pump inoperative as soon as the metal makes its appearance at said pouring edge; two pipes in parallel connecting said jack to both electric pumps and, respectively disposed on said pipes, a first selector having a movable member and, in series, a valve member forming said means controlled by the cell, and a second selector having a
  • a feeding device of a centrifugally casting machine in combination therewith: a frame; on this frame two bearings defining a horizontal axis of rotation; a feed ladle having a pouring edge and a pair of trunnions rotated in these hearings, whereby said ladle can be rotated about said axis, said ladle having a capacity such that after being filled, said ladle permits by sequential partial pourings to effect a plurality of successive casting operations; and, to cause said ladle to be rocked, a control device comprising a hydraulic jack to tilt said feed ladle about the rotational axis thereof; an electric pouring pump and an electric impeller pump, said pumps discharging in parallel into said jack; a main electric supply circuit; two independent electric supply circuits for said electric pumps and connected with said main electric circuit; a photocell responsive to appearance of molten metal at the pouring edge of the ladle; means controlled by this cell to render the impeller electric pump inoperative as soon as the metal
  • a first selector having a movable member and, in series, a valve member forming said means controlled by the cell
  • a second selector having a movable member, the movable members of said two selectors being interconnected and being movable between two positions, such that in one of said positions both pumps are simultaneously connected, namely: the impeller pump to said valve member and the pouring pump to said supply, whereas in said other position, both pumps are connected to discharge;
  • said valve member being so arranged and combined with the cell that prior to the metal appearing at the pouring edge of the ladle, said valve member establishes communication between the second selector and said supply pipe, and as soon as the metal appearance takes place at said pouring edge, said valve member sets the second selector to discharge.
  • a contactor is seriesconnected in the electric supply circuit of the pouring pump with said adjusting rheostats, and wherein, for each rheostat, there is provided a short-circuiting circuit having a short-circuiting switch mounted therein and, for controlling said short-eircuiting circuit by said cam, an electro-magnetic relay having an energizing circuit which is connected with the electric supply circuit and includes a control switch acted upon by said cam.
  • a signalling lamp whose supply circuit is connected with the main electric supply circuit and comprises a switch combined with the cam, said switch being adapted to be closed by said cam as a function of the closing of the control switch of the electromagnetic-relay circuit controlling the short-circuiting switch of said rheostat.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US43168A 1960-03-25 1960-07-15 Control device for a molten-metal pouring ladle in a centrifugal casting machine Expired - Lifetime US3056179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR822516A FR1260204A (fr) 1960-03-25 1960-03-25 Dispositif perfectionné de commande de poche d'alimentation en métal fondu pour machine à couler par centrifugation

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US (1) US3056179A (fr)
BE (1) BE599394A (fr)
CH (1) CH368583A (fr)
DE (1) DE1149503B (fr)
FR (1) FR1260204A (fr)
GB (1) GB930127A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122800A (en) * 1961-05-01 1964-03-03 Gen Motors Corp Automatic metal pouring machine
US3293705A (en) * 1962-11-14 1966-12-27 Bbc Brown Boveri & Cie Apparatus for automatically pouring molten metal
US3343591A (en) * 1963-11-28 1967-09-26 Ct De Rech S De Pont A Mousson Automatic mold pouring with stop means responsive to molten metal in overflow basin
US3415421A (en) * 1967-02-02 1968-12-10 United States Steel Corp Material pot with controlled dumping mechanism
US3556346A (en) * 1968-11-13 1971-01-19 Harold Karl Steiner Dispenser for viscous products
US3799240A (en) * 1972-01-24 1974-03-26 Gen Electric Horizontal centrifugal casting machine
US3901415A (en) * 1971-07-22 1975-08-26 Lucas Industries Ltd Ladling apparatus
US3979033A (en) * 1972-09-29 1976-09-07 Chrysler Corporation Automatic piston pouring equipment
US4036279A (en) * 1976-09-08 1977-07-19 Caterpillar Tractor Co. Method of treating molten metal in centrifugal castings
US4316495A (en) * 1979-06-25 1982-02-23 Pont-A-Mousson S.A. Method and installation for centrifugal casting
US20120125955A1 (en) * 2009-05-27 2012-05-24 Comercial Nicem-Exinte, S.A. - Coniex Device for supplying molten metal for centrifuge machines
US8733424B1 (en) 2013-03-15 2014-05-27 United States Pipe And Foundry Company, Llc Centrifugal casting method and apparatus
US8910699B2 (en) 2013-03-15 2014-12-16 United States Pipe And Foundry Company, Llc Centrifugal casting method and apparatus
US11491536B1 (en) 2021-07-12 2022-11-08 United States Pipe And Foundry Company, Llc Method and apparatus for estimating dimensional uniformity of cast object

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US4370719A (en) * 1980-11-17 1983-01-25 Amsted Industries Incorporated Control of centrifugal pipe casting operation
CN103273034A (zh) * 2013-05-16 2013-09-04 新兴河北工程技术有限公司 球墨铸铁管离心机主机行走速度自动控制装置
FR3023471B1 (fr) 2014-07-10 2018-07-13 Evolutis Embase d'ancrage pour implant orthopedique d'articulation
CN106862518A (zh) * 2017-04-28 2017-06-20 新兴铸管股份有限公司 一种热模离心机浇注车控制***

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US2768413A (en) * 1953-04-20 1956-10-30 Allegheny Ludlum Stcel Corp System for controlling the flow of molten metal

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CH294768A (fr) * 1949-08-12 1953-11-30 Conduites Ste Indle Machine pour la fabrication automatique de tuyaux par centrifugation.
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Cited By (18)

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US3122800A (en) * 1961-05-01 1964-03-03 Gen Motors Corp Automatic metal pouring machine
US3293705A (en) * 1962-11-14 1966-12-27 Bbc Brown Boveri & Cie Apparatus for automatically pouring molten metal
US3343591A (en) * 1963-11-28 1967-09-26 Ct De Rech S De Pont A Mousson Automatic mold pouring with stop means responsive to molten metal in overflow basin
US3415421A (en) * 1967-02-02 1968-12-10 United States Steel Corp Material pot with controlled dumping mechanism
US3556346A (en) * 1968-11-13 1971-01-19 Harold Karl Steiner Dispenser for viscous products
US3901415A (en) * 1971-07-22 1975-08-26 Lucas Industries Ltd Ladling apparatus
US3799240A (en) * 1972-01-24 1974-03-26 Gen Electric Horizontal centrifugal casting machine
US3979033A (en) * 1972-09-29 1976-09-07 Chrysler Corporation Automatic piston pouring equipment
US4036279A (en) * 1976-09-08 1977-07-19 Caterpillar Tractor Co. Method of treating molten metal in centrifugal castings
US4316495A (en) * 1979-06-25 1982-02-23 Pont-A-Mousson S.A. Method and installation for centrifugal casting
US20120125955A1 (en) * 2009-05-27 2012-05-24 Comercial Nicem-Exinte, S.A. - Coniex Device for supplying molten metal for centrifuge machines
US8875959B2 (en) * 2009-05-27 2014-11-04 Comercial Nicem-Exinte, S.A.-Coniex Device for supplying molten metal for centrifuge machines
US8733424B1 (en) 2013-03-15 2014-05-27 United States Pipe And Foundry Company, Llc Centrifugal casting method and apparatus
US8910699B2 (en) 2013-03-15 2014-12-16 United States Pipe And Foundry Company, Llc Centrifugal casting method and apparatus
US8960263B2 (en) 2013-03-15 2015-02-24 United States Pipe And Foundry Company, Llc Centrifugal casting method and apparatus
US11491536B1 (en) 2021-07-12 2022-11-08 United States Pipe And Foundry Company, Llc Method and apparatus for estimating dimensional uniformity of cast object
US11491535B1 (en) 2021-07-12 2022-11-08 United States Pipe And Foundry Company, Llc Method and apparatus for estimating dimensional uniformity of cast object
US11607723B2 (en) 2021-07-12 2023-03-21 United States Pipe And Foundry Company, Llc Method and apparatus for estimating dimensional uniformity of cast object

Also Published As

Publication number Publication date
CH368583A (fr) 1963-04-15
DE1149503B (de) 1963-05-30
BE599394A (fr) 1961-05-16
GB930127A (en) 1963-07-03
FR1260204A (fr) 1961-05-05

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