US20160082503A1 - Apparatus for Continuous Casting - Google Patents
Apparatus for Continuous Casting Download PDFInfo
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- US20160082503A1 US20160082503A1 US14/786,525 US201414786525A US2016082503A1 US 20160082503 A1 US20160082503 A1 US 20160082503A1 US 201414786525 A US201414786525 A US 201414786525A US 2016082503 A1 US2016082503 A1 US 2016082503A1
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- Prior art keywords
- plate
- tubular element
- mold
- plates
- passage channels
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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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0406—Moulds with special profile
-
- 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
- B22D11/009—Continuous casting of metals, i.e. casting in indefinite lengths of work of special cross-section, e.g. I-beams, U-profiles
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
-
- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
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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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
Definitions
- the present invention concerns an apparatus for continuous casting that allows to continuously cast metal products such as slabs with a rectangular section and bars with a double “T” section, also known as “beam blanks”.
- the apparatus for continuous casting allows to install both crystallizers of the tubular type and also crystallizers of the plate type.
- An apparatus for continuous casting comprising a support structure or framework, defining a closed tubular support body, or body to support and contain the mold, hereinafter indicated as mold body.
- the mold body can allow to install a mold of the tubular type or plate type.
- Molds of the tubular type allow to obtain metal products with very simple and even cross section, for example blooms or billets with a round or square section, or with a more complex cross section but of limited size.
- Known molds of a tubular type comprise a first tubular element, external during use, called conveyor, and a second tubular element, internal during use, called crystallizer.
- the crystallizer usually made of copper or its alloys, has a through cavity with a shape and size substantially analogous to those of the metal product to be cast.
- the external surfaces of the crystallizer because of the high working temperature, are constantly cooled by a cooling liquid, usually water.
- a hollow space is provided or a plurality of cooling channels, for the passage and conveyance of the water.
- the cooling water is made to circulate from a first end of the crystallizer, corresponding to the end from which the cast product exits, to a second end, corresponding to the end in which the molten metal is cast, in practice obtaining a counter-flow cooling with respect to the product.
- the mold thus obtained is inserted in the mold body which, together with the mold, defines a containing compartment.
- the containing compartment is divided into two halves by means of a separator element in order to define, together with the mold, two chambers containing cooling water, also called water boxes.
- the fluidic connection between the first containing chamber and the second containing chamber is made by the hollow space, or by the cooling channels, comprised between the conveyor and the crystallizer.
- the cooling water is introduced into the first water containing chamber, passes through the hollow space or the cooling channels and exits into the second containing chamber in order to be subsequently discharged.
- Crystallizers of the plate type are also known, generally used for casting billets or blooms with a rectangular section, or Beam Blanks.
- Said crystallizers of the plate type comprise four plates connected to each other to define, with their surface which during use faces toward the inside, a cavity for the passage of the liquid metal.
- each crystallizer is reciprocally connected by means of a frame provided with four frame elements, each of which is associated to one of the plates.
- the four frame elements are reciprocally connected in correspondence to their lateral edges in order to close the plates inside them.
- the plates are coupled with each other in correspondence to respective connection edges.
- connection means which can provide to make holes, threaded or not, into which screws or stud bolts are screwed, centering or clamping pins are inserted and/or elastic elements are associated.
- the plates have lateral edges shaped to define together respective same-shape couplings.
- Direct connection means are not provided between the plates, since they could require an increase in thickness of the plates or could stiffen the structure too much, causing the onset of internal tensions because of thermal stresses.
- connection between the plates and the frame is particularly complex and uneconomic in terms of assembly time and the number of components used.
- each plate of a plate crystallizer is provided with a plurality of cooling channels for the circulation of the cooling water.
- the cooling channels can be made directly in the thickness of each plate. It is also known to make, on the surface of the plates which, during use, faces toward the outside, longitudinal grooves that are closed by a closing slab to define said cooling channels.
- the position of the cooling channels in the plates is planned as a function of the differentiated cooling conditions of the internal surfaces of the crystallizer.
- each plate the inlet and outlet ends of the cooling channels are referred to a single inlet collector and respectively a single outlet collector.
- the inlet and outlet collectors are connected in their turn to a plant for feeding and treating the cooling water.
- the differentiated cooling action prevents the onset of internal tensions or cracks that are damaging for the cast metal product.
- the inlet and outlet collectors comprise ports to introduce and discharge the water, made in the frame elements and which connect to each other near access apertures to the cooling channels provided in the plates.
- the introduction and discharge ports in their turn connect, with suitable pipes, to the plant that feeds and treats the water.
- One purpose of the present invention is to make an apparatus for continuous casting that allows to selectively install in the same mold body crystallizers of the tubular type or crystallizers of the plate type.
- Another purpose of the present invention is to make an apparatus for continuous casting that allows to renew already existing apparatuses, in a simple manner, provided for example for the installation of tubular crystallizers, making them suitable also for the installation of plate crystallizers.
- Another purpose of the present invention is to make an apparatus for continuous casting that allows to assemble the crystallizers in the mold body in a simple and rapid way.
- Another purpose of the present invention is to reduce the complexity of connection between the plates of a crystallizer of the plate type.
- the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
- an apparatus for continuous casting comprises a support structure provided with a containing casing configured to support inside it a mold equipped with a plurality of longitudinal passage channels for the passage of a cooling liquid.
- the containing casing and the mold together define an introduction chamber and a discharge chamber for the cooling liquid.
- Some forms of embodiment of the present invention may provide that the introduction chamber and the discharge chamber are separated by a separator element associated to the mold and to the containing casing.
- the introduction chamber and the discharge chamber are fluidically connected by the passage channels, in which, during use, the cooling liquid is made to flow to constantly cool the mold and preserve its dimensional and mechanical characteristics.
- the mold comprises a first tubular element and a second tubular element disposed inside said first tubular element so that only the first tubular element is located in direct contact with the cooling liquid contained in the introduction chamber and the discharge chamber.
- the second tubular element comprises a plurality of plates each provided with said passage channels and connected to each other to define a through casting cavity.
- the first tubular element is provided with connection members to connect said passage channels of the plates respectively with the introduction chamber and with the discharge chamber and thus achieve the cooling of the plates.
- the configuration described above therefore allows to associate crystallizers of the plate type to a substantially known support structure normally configured for the installation of tubular crystallizers, thus increasing the versatility of said structure.
- a hollow space is defined between the first tubular element and the second tubular element which drains possible infiltrations of cooling liquid between the first and the second tubular element.
- possible infiltrations of cooling liquid in the casting cavity are avoided which, because of contact between the cooling liquid and the melted metal, could also cause explosions. This would compromise the functioning and the integrity of the apparatus and adjoining structures, also causing a serious risk for the safety of the operators.
- each of the plates is served by its own connection members.
- each of the connection members is connected to a plurality of said passage channels.
- flow adjustment members provided to adjust the flow rate of cooling liquid in the passage channels, are associated to at least one of the connection members.
- FIG. 1 is a schematic representation in section of an apparatus for continuous casting according to the present invention
- FIG. 2 is a section view from II to II in FIG. 1 ;
- FIG. 3 is a section view from III to III in FIG. 2 ;
- FIG. 4 is a section view from IV to IV in FIG. 1 ;
- FIG. 5 is a view of an enlarged detail of FIG. 4 ;
- FIG. 6 is an enlarged view of a first enlarged detail of FIG. 1 ;
- FIG. 7 is an enlarged view of a second enlarged detail of FIG. 1 .
- an apparatus for continuous casting is indicated in its entirety by the reference number 10 and comprises a support structure or mold body 11 , to which a mold 12 is associated, in this case, of the plate type.
- the mold body 11 also allows to install molds of the tubular type.
- the mold body 11 is provided with a containing casing 13 in which, during use, the mold 12 is inserted. Between the containing casing 13 and the mold 12 a closed chamber 15 is defined, to contain the cooling water.
- the containing casing 13 is closed at the top by an upper flange 24 and below by a lower flange 25 .
- a separator element 14 located in the containing compartment 15 , is associated to the containing casing 13 and to the mold 12 and divides the containing compartment 15 into an introduction chamber 16 and a discharge chamber 17 of the cooling water.
- the separator element 14 is located inside the containing compartment 15 transverse to the longitudinal extension of the mold 12 .
- the introduction chamber 16 and the discharge chamber 17 are connected, by means of a delivery pipe 18 and, respectively a discharge pipe 19 , to a plant to feed and treat the cooling water, not shown in the drawings.
- the separator element 14 comprises a first portion 20 solidly coupled to the mold body 11 and a second portion 22 solidly attached to the mold 12 .
- the first portion 20 is attached to the mold body 11 , by means of welding for example, and is provided with a through seating 21 configured to receive the second portion 22 of the separator element 14 .
- sealing members 23 are provided, such as packings, of the annular type or O-rings for example, which prevent the passage of cooling water between the discharge chamber 17 and the introduction chamber 16 .
- separator element 14 is made in a single body and is solidly associated to the mold body 11 or to the mold 12 and extends taking itself into contact with the mold 12 and the mold body 11 .
- the mold 12 develops longitudinally along a longitudinal axis Z which can have a rectilinear development, if the apparatus 10 is installed in a continuous casting machine of the vertical type, or it can have a slightly curved development if the apparatus 10 is installed in a curved continuous casting machine.
- the mold 12 comprises a first tubular element or conveyor 26 , and a second tubular element or crystallizer 27 , disposed inside the conveyor 26 .
- the conveyor 26 has the function of supporting the crystallizer 27 as well as the function of separating the latter from the introduction chamber 16 and from the discharge chamber 17 .
- a hollow space 51 is defined which is open toward the bottom to drain possible leaks of cooling water.
- the crystallizer 27 is not subjected to the pressure of the cooling water contained in the introduction chamber 16 and the discharge chamber 17 , and is therefore not subjected to deformations.
- the crystallizer 27 comprises a plurality of plates 28 a , 28 b , and 29 a , 29 b connected to each other, in ways which will be described hereafter, to define a through casting cavity 30 for the passage of the melted metal.
- Each plate 28 a , 28 b , 29 a , 29 b is provided with a plurality of passage channels 31 for the cooling water that extend through for the entire length of the plate 28 a , 28 b , 29 a , 29 b.
- the passage channels 31 can be made completely in the thickness of each plate 28 a , 28 b , 29 a , 29 b , using holing operations for example.
- Other forms of embodiment, not shown in the drawings, possibly combinable with forms of embodiment described here, provide that the passage channels 31 are defined by longitudinal grooves open toward the outside and subsequently closed by closing elements.
- Each passage channel 31 has an entrance end 32 a and an exit end 32 b located in fluidic communication respectively with the introduction chamber 16 and with the discharge chamber 17 by means of connection channels 33 a and 33 b made transversely in the thickness of each plate 28 a , 28 b , 29 a , 29 b.
- the entrance ends 32 a are closed in their end part by a closing flange 34 , anchored to the lower flange 25 .
- the exit ends 32 b are closed by the upper flange 24 of the mold body 11 .
- Each plate 28 a , 28 b , 29 a , 29 b is provided in its turn with respective connection edges 35 suitably shaped to define reciprocal same-shape couplings between the plates 28 a , 28 b , 29 a , 29 b.
- connection channels 33 b converge toward the external surface of the plates 28 a , 28 b , 29 a , 29 b , in correspondence to common discharge collectors 36 b .
- connection channels 33 a also converge toward the external surface of the plates 28 a , 28 b , 29 a , 29 b in correspondence to common introduction collectors 36 a ( FIG. 1 ).
- the entrance ends 32 a and the exit ends 32 b of the passage channels 31 are connected to the introduction chamber 16 and to the discharge chamber 17 by means of one or more connecting members.
- the entrance ends 32 a and the exit ends 32 b are connected to entrance sleeves 37 a and respectively exit sleeves 37 b.
- each entrance sleeve 37 a and each exit sleeve 37 b allow to feed or discharge the cooling water into or from several passage channels 31 .
- the connection of the entrance sleeves 37 a and the exit sleeves 37 b is provided in correspondence to the introduction collectors 36 a and respectively the discharge collectors 36 b.
- the entrance sleeves 37 a and the exit sleeves 37 b are attached to the conveyor 26 by connection means 38 so as to put their useful passage section in continuity with the introduction collectors 36 a and the discharge collectors 36 b.
- Flow choking members 45 are associated to at least one of either the entrance sleeves 37 a or the exit sleeves 37 b , in this case to the exit sleeves 37 b.
- the flow choking members 45 allow to adjust the flow of cooling water in the passage channels 31 .
- a different calibration of the flow choking members 45 of each of the exit sleeves 37 b allows to obtain differentiated cooling zones in the crystallizer 27 .
- the flow choking members 45 can comprise plates with calibrated holes, commandable or servo-commandable valves, or elements to obstruct/choke the flow or similar or comparable members suitable for the purpose.
- This solution is particularly efficient if products are cast that have zones of the cross section with a variable thickness, such as Beam Blanks for example, in which the central area, or “core”, has a different thickness from the external zones or “wings”.
- the flow adjustment members 45 comprise a plate 46 attached to the exit sleeve 37 b by connection means 48 , of the threaded type for example.
- the plate 46 is provided with at least a calibrated hole 47 , smaller in size than the useful passage section of the exit sleeve 37 b and which allows to adjust the flow rate of the cooling water.
- Connection members 50 are provided to connect the conveyor 26 and the crystallizer 27 to each other.
- connection members 50 are suitable to determine the reciprocal positioning of the plates 28 a , 28 b , 29 a , 29 b and the external walls of the conveyor 26 .
- connection members 50 comprise first attachment devices 52 provided to constrain the reciprocal positioning of a first plate 28 a with the wall of the conveyor 26 .
- Some forms of embodiment of the present invention provide that the first plate 28 a is the one disposed toward the extrados of the curve of the mold 12 .
- the first attachment devices 52 comprise a plurality of screws 53 insertable in through holes 54 made in the thickness of the conveyor 26 .
- the screws 53 screw into threaded holes 55 made on the external surface of the first plate 28 a and transverse to the longitudinal axis Z.
- Some forms of embodiment of the present invention provide that the wall of the conveyor 26 to which the first plate 28 a is attached is provided with protruding abutment portions which define references for the correct positioning of the first plate 28 a with respect to the conveyor 26 , and consequently also for the other plates 28 b , 29 a , 29 b.
- Second attachment devices 57 are provided to determine the reciprocal coupling of a second plate 28 b , opposite the first plate 28 a , of a third plate 29 a that connects in two first connection edges 35 of the first 28 a and the second 28 b plate, and of a fourth plate 29 b , opposite the third plate 29 a , which connects in two second connection edges 35 of the third plate 29 a and the fourth plate 29 b.
- the second attachment devices 57 are configured to compress, in correspondence with their respective connection edges, the second plate 28 b , the third plate 29 a and the fourth plate 29 b against the first plate 28 a.
- the second attachment devices 57 comprise a plurality of elastic blocks 58 attached to the external surface of the second plate 28 b , of the third plate 29 a and of the fourth plate 29 b , in this case to the external surface of the fourth plate 29 b , and on which thruster elements 64 act during use.
- the thruster elements 64 are attached on the external surface of the conveyor 26 and are configured to compress the elastic blocks 58 .
- the elastic blocks 58 comprise a containing body 59 with a substantially cylindrical shape, provided to contain a plurality of elastic elements 60 inside it.
- the elastic elements 60 comprise cup type springs, although in other forms of embodiment the elastic elements 60 can comprise compression springs of the helical type, conical disc springs or leaf springs or suchlike.
- the containing body 59 comprises a container 61 provided with an aperture 65 for the introduction of the elastic elements 60 .
- the aperture 65 of the container 61 is partly closed by a lid 62 that provides to maintain the elastic elements 60 compressed inside the container 61 , and generates a first preloading thereof.
- the container 61 is housed, by mechanical interference, in a respective blind hole 63 made on the external surface of the second plate 28 b , the third plate 29 a and the fourth plate 29 b.
- the reciprocal connection between the container 61 and the lid 62 can be the threaded type or, in other forms of embodiment, by same-shape coupling or interference, for example providing snap-in attachment teeth of the non-releasable type.
- the lid 62 is provided with a hole 67 which allows the thruster elements 64 to cooperate with the elastic elements 60 .
- a small plate 66 that protrudes toward the outside through the hole 67 .
- Suitable abutments 68 are provided in the small plate 66 and in the lid 62 , to prevent the small plate 66 from exiting from the container 61 .
- the thruster elements 64 comprise a thrust screw 69 which is screwed into a threaded hole 70 made through the thickness of the conveyor 26 .
- the threaded hole 70 is made in a position coordinated to the one in which the blind hole 63 is provided for housing the elastic block 58 .
- each second attachment device 57 presses against the small plate 66 , compressing the elastic elements 60 inside the containing body 59 .
- the overall effect of compression of the elastic elements 60 therefore translates into an effect of compression of the second plate 28 b , the third plate 29 a and the fourth plate 29 b against the first plate 28 a , which is the only one directly attached to the conveyor 26 .
- Assembling the crystallizer 12 with the conveyor 26 comprises a first operation of introducing only the first plate 28 a inside the conveyor 26 , disposing it in contact against a wall of the latter. If necessary, it may be provided to interpose the spacer 56 between the first plate 28 a and the conveyor 26 as described above.
- the first plate 28 a is attached in the conveyor 26 by the first attachment devices 52 which exert a holding action of the first plate 28 a against the wall of the conveyor 26 .
- a subsequent operation is provided to introduce the second plate 28 b , the third plate 29 a and the fourth plate 29 b inside the conveyor 26 , disposing them in reciprocal contact with their connection edges 35 of the first plate 28 a.
- Some forms of embodiment provide that the operation of introducing the second plate 28 b , the third plate 29 a , and the fourth plate 29 b into the conveyor 26 occurs simultaneously.
- dedicated equipment can be provided that, before the insertion, reciprocally connects the second plate 28 b , the third plate 29 a and the fourth plate 29 b , disposing them in the position they will assume during use.
- the equipment together with the second plate 28 b , the third plate 29 a and the fourth plate 29 b is used to allow the simultaneous insertion of the latter inside the conveyor 26 .
- the second attachment devices 57 are activated.
- the activation of the second attachment devices 57 allows to compress the second plate 28 b , the third plate 29 a and the fourth plate 29 b against the first plate 28 a.
- connection members 50 comprise first positioning devices 71 a and 71 b provided to determine a precise positioning of the first plate 28 a and the second plate 28 b , and second positioning devices 72 ( FIGS. 2 and 4 ) provided to determine a precise positioning of the third plate 29 a and the fourth plate 29 b with respect to the conveyor 26 in an axial direction, that is, along the longitudinal axis Z, and a transverse direction.
- the first positioning devices 71 a , 71 b and the second positioning devices 72 comprise a plurality of pins 73 (FIGS. 2 and 4 - 6 ) suitable to be inserted in respective through holes 74 made in the thickness of the conveyor 26 and according to an axis that is located transverse to the longitudinal axis Z.
- connection members 75 which, in this case, comprise screws 76 inserted into through holes 77 made in a head 78 of the pin 73 .
- Each first positioning device 71 a , 71 b comprises a first housing seating 79 , respectively 80 , made blind in the thickness of the first 28 a and the second 28 b plate ( FIGS. 6 and 7 ).
- the first housing seatings 79 of the first positioning devices 71 a are configured to constrain the position of the first 28 a and the second 28 b plate with respect to the conveyor 26 both in a direction parallel to the longitudinal axis Z and also in a transverse direction, for example orthogonal, to the longitudinal axis Z.
- the first housing seatings 80 of the first positioning devices 71 b are configured to constrain the position of the plates 28 a , 28 b in a transverse direction, in this specific case, orthogonal, to the longitudinal axis Z and to leave the movement free in a direction parallel to the longitudinal axis Z.
- Each second positioning device 72 comprises a second housing seating 81 made blind in the thickness of the third 29 a and the fourth 29 b plate ( FIGS. 2 and 4 ).
- the second housing seatings 81 of the second positioning devices 72 are configured to constrain the position of the third 29 a and the fourth 29 b plate in a direction parallel to the longitudinal axis Z and to leave the movement free in a transverse direction, in this specific case, orthogonal, to the longitudinal axis Z, to allow any necessary adaption if the plates 28 a , 28 b , 29 a , 29 b are regenerated and if the thickness of the spacer 56 is modified.
- the first plate 28 a changes its total thickness and, in order to maintain the positioning of the internal profile unchanged with respect to the machine, a spacer 56 is inserted, with a calibrated thickness with respect to the support frame 26 . These operations produce very slight movements of the theoretical center of the plates 28 b , 29 a , 29 b.
- the positioning of the crystallizer 27 in the support frame 26 is given by the abutment to which the first plate 28 a is attached.
- a rigid positioning constraint makes it impossible to assemble the crystallizer 27 in the support frame 26 .
- both the first housing seatings 80 and the second housing seatings 81 have a greater size compared to the size of the diameter of the pin 73 in the direction in which a movement of the plates 28 a , 28 b , 29 a , 29 b is allowed, while they have a tolerance coupling, play coupling or interference coupling in the direction in which movement is prevented.
- the freedom of movement of the plates 28 a , 28 b , 29 a , 29 b with respect to the pins 73 allows to take into account possible thermal dilations to which the latter are subjected during use, and thus prevent the onset of internal stresses that could deform the crystallizer 27 , generating cast products with unwanted geometric and microstructural characteristics, as well as reducing the useful life of the crystallizer 27 itself.
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Abstract
Apparatus for continuous casting comprising a support structure provided with a containing casing configured to support inside it a mold equipped with a plurality of longitudinal passage channels for the passage of a cooling liquid. The containing casing and the mold together define an introduction chamber and a discharge chamber for the cooling liquid, and the introduction chamber and the discharge chamber are fluidically connected by the passage channels. The mold comprises a first tubular element and a second tubular element disposed inside the first tubular element. The second tubular element comprises a plurality of plates each provided with passage channels and connected to each other to define a through casting cavity. The first tubular element is provided with connection members to connect the passage channels of the plates respectively with the introduction chamber and with the discharge chamber.
Description
- The present invention concerns an apparatus for continuous casting that allows to continuously cast metal products such as slabs with a rectangular section and bars with a double “T” section, also known as “beam blanks”.
- In particular, the apparatus for continuous casting allows to install both crystallizers of the tubular type and also crystallizers of the plate type.
- An apparatus is known for continuous casting comprising a support structure or framework, defining a closed tubular support body, or body to support and contain the mold, hereinafter indicated as mold body.
- The mold body, depending on its particular constructional configuration, can allow to install a mold of the tubular type or plate type.
- Molds of the tubular type allow to obtain metal products with very simple and even cross section, for example blooms or billets with a round or square section, or with a more complex cross section but of limited size.
- Known molds of a tubular type comprise a first tubular element, external during use, called conveyor, and a second tubular element, internal during use, called crystallizer.
- The crystallizer, usually made of copper or its alloys, has a through cavity with a shape and size substantially analogous to those of the metal product to be cast.
- The external surfaces of the crystallizer, because of the high working temperature, are constantly cooled by a cooling liquid, usually water.
- To this purpose, between the conveyor and the crystallizer a hollow space is provided or a plurality of cooling channels, for the passage and conveyance of the water.
- The cooling water is made to circulate from a first end of the crystallizer, corresponding to the end from which the cast product exits, to a second end, corresponding to the end in which the molten metal is cast, in practice obtaining a counter-flow cooling with respect to the product.
- The mold thus obtained is inserted in the mold body which, together with the mold, defines a containing compartment.
- The containing compartment is divided into two halves by means of a separator element in order to define, together with the mold, two chambers containing cooling water, also called water boxes.
- The fluidic connection between the first containing chamber and the second containing chamber is made by the hollow space, or by the cooling channels, comprised between the conveyor and the crystallizer.
- The cooling water is introduced into the first water containing chamber, passes through the hollow space or the cooling channels and exits into the second containing chamber in order to be subsequently discharged.
- Consequently the cooling action of the crystallizer is substantially uniform on the whole extension of the surfaces affected by the cooling. This cooling condition, precisely because of the impossibility of obtaining a differentiated cooling action on its walls, makes the molds of the tubular type not very suitable for casting products with shapes that are not even and uniform, particularly those of a large size, such as beams with a double “T” section, also called “Beam Blanks”.
- In the case of products with large size sections, the walls of the tubular crystallizer are subjected to considerable deformations due both to the working pressure of the cooling liquid and also to thermo-mechanical stresses.
- Crystallizers of the plate type are also known, generally used for casting billets or blooms with a rectangular section, or Beam Blanks.
- Said crystallizers of the plate type comprise four plates connected to each other to define, with their surface which during use faces toward the inside, a cavity for the passage of the liquid metal.
- The plates of each crystallizer are reciprocally connected by means of a frame provided with four frame elements, each of which is associated to one of the plates.
- The four frame elements are reciprocally connected in correspondence to their lateral edges in order to close the plates inside them. The plates are coupled with each other in correspondence to respective connection edges.
- The frame elements are connected to each other by connection means which can provide to make holes, threaded or not, into which screws or stud bolts are screwed, centering or clamping pins are inserted and/or elastic elements are associated.
- The plates have lateral edges shaped to define together respective same-shape couplings.
- Direct connection means are not provided between the plates, since they could require an increase in thickness of the plates or could stiffen the structure too much, causing the onset of internal tensions because of thermal stresses. On the other hand the connection between the plates and the frame is particularly complex and uneconomic in terms of assembly time and the number of components used.
- Similarly to tubular crystallizers, each plate of a plate crystallizer is provided with a plurality of cooling channels for the circulation of the cooling water.
- The cooling channels can be made directly in the thickness of each plate. It is also known to make, on the surface of the plates which, during use, faces toward the outside, longitudinal grooves that are closed by a closing slab to define said cooling channels.
- The position of the cooling channels in the plates is planned as a function of the differentiated cooling conditions of the internal surfaces of the crystallizer.
- In each plate, the inlet and outlet ends of the cooling channels are referred to a single inlet collector and respectively a single outlet collector.
- The inlet and outlet collectors are connected in their turn to a plant for feeding and treating the cooling water.
- By suitably varying the flow rates of the water through the inlet and outlet collectors it is possible to differentiate the cooling action in the plates and, as a consequence, the cooling action in the section of the cast product.
- The differentiated cooling action prevents the onset of internal tensions or cracks that are damaging for the cast metal product.
- The inlet and outlet collectors comprise ports to introduce and discharge the water, made in the frame elements and which connect to each other near access apertures to the cooling channels provided in the plates.
- The introduction and discharge ports in their turn connect, with suitable pipes, to the plant that feeds and treats the water.
- The particular technical requirements to make the mold of the plate type render the plate crystallizer unsuitable to be installed on mold bodies configured for the installation of tubular crystallizers and vice versa.
- To this purpose, depending on whether a crystallizer of the tubular type or a crystallizer of the plate type is used, it is necessary to install one or the other of the mold bodies, with a subsequent considerable increase in plant, installation and maintenance costs.
- One purpose of the present invention is to make an apparatus for continuous casting that allows to selectively install in the same mold body crystallizers of the tubular type or crystallizers of the plate type.
- Another purpose of the present invention is to make an apparatus for continuous casting that allows to renew already existing apparatuses, in a simple manner, provided for example for the installation of tubular crystallizers, making them suitable also for the installation of plate crystallizers. To this end, it is also a purpose of the present invention to maintain the functions of a mold body for tubular crystallizers substantially unaltered, in order to allow the use both of already existing tubular crystallizers and also plate crystallizers suitably prepared.
- Another purpose of the present invention is to make an apparatus for continuous casting that allows to assemble the crystallizers in the mold body in a simple and rapid way.
- Another purpose of the present invention is to reduce the complexity of connection between the plates of a crystallizer of the plate type.
- It is also a purpose of the present invention to optimize the heat exchange action between the crystallizer and the metal product which is cast.
- The Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
- The present invention is set forth and characterized in the independent claim, while the dependent claims describe other characteristics of the invention or variants to the main inventive idea.
- In accordance with the above purposes, an apparatus for continuous casting comprises a support structure provided with a containing casing configured to support inside it a mold equipped with a plurality of longitudinal passage channels for the passage of a cooling liquid. The containing casing and the mold together define an introduction chamber and a discharge chamber for the cooling liquid.
- Some forms of embodiment of the present invention may provide that the introduction chamber and the discharge chamber are separated by a separator element associated to the mold and to the containing casing.
- The introduction chamber and the discharge chamber are fluidically connected by the passage channels, in which, during use, the cooling liquid is made to flow to constantly cool the mold and preserve its dimensional and mechanical characteristics.
- According to one feature of the present invention the mold comprises a first tubular element and a second tubular element disposed inside said first tubular element so that only the first tubular element is located in direct contact with the cooling liquid contained in the introduction chamber and the discharge chamber.
- Moreover, the second tubular element comprises a plurality of plates each provided with said passage channels and connected to each other to define a through casting cavity.
- The first tubular element is provided with connection members to connect said passage channels of the plates respectively with the introduction chamber and with the discharge chamber and thus achieve the cooling of the plates.
- The configuration described above therefore allows to associate crystallizers of the plate type to a substantially known support structure normally configured for the installation of tubular crystallizers, thus increasing the versatility of said structure.
- According to another form of embodiment, a hollow space is defined between the first tubular element and the second tubular element which drains possible infiltrations of cooling liquid between the first and the second tubular element. In this way, possible infiltrations of cooling liquid in the casting cavity are avoided which, because of contact between the cooling liquid and the melted metal, could also cause explosions. This would compromise the functioning and the integrity of the apparatus and adjoining structures, also causing a serious risk for the safety of the operators.
- According to another form of embodiment of the present invention, each of the plates is served by its own connection members.
- In other forms of embodiment, each of the connection members is connected to a plurality of said passage channels.
- Other forms of embodiment provide that flow adjustment members, provided to adjust the flow rate of cooling liquid in the passage channels, are associated to at least one of the connection members.
- In this way it is possible to differentiate the cooling action of each of the plates which make up the second tubular element, taking into account any uneven section shapes of the cast product for example, such as for example a Beam Blank.
- These and other characteristics of the present invention will become apparent from the following description of some forms of embodiment, given as a non-restrictive example with reference to the attached drawings wherein:
-
FIG. 1 is a schematic representation in section of an apparatus for continuous casting according to the present invention; -
FIG. 2 is a section view from II to II inFIG. 1 ; -
FIG. 3 is a section view from III to III inFIG. 2 ; -
FIG. 4 is a section view from IV to IV inFIG. 1 ; -
FIG. 5 is a view of an enlarged detail ofFIG. 4 ; -
FIG. 6 is an enlarged view of a first enlarged detail ofFIG. 1 ; -
FIG. 7 is an enlarged view of a second enlarged detail ofFIG. 1 . - To facilitate comprehension, the same reference numbers have been used, where possible, to identify identical common elements in the drawings. It is understood that elements and characteristics of one form of embodiment can conveniently be incorporated into other forms of embodiment without further clarifications.
- With reference to
FIG. 1 an apparatus for continuous casting is indicated in its entirety by thereference number 10 and comprises a support structure ormold body 11, to which amold 12 is associated, in this case, of the plate type. Themold body 11 also allows to install molds of the tubular type. - The
mold body 11 is provided with a containingcasing 13 in which, during use, themold 12 is inserted. Between the containingcasing 13 and the mold 12 aclosed chamber 15 is defined, to contain the cooling water. The containingcasing 13 is closed at the top by anupper flange 24 and below by alower flange 25. - A
separator element 14, located in the containingcompartment 15, is associated to the containingcasing 13 and to themold 12 and divides the containingcompartment 15 into anintroduction chamber 16 and adischarge chamber 17 of the cooling water. - The
separator element 14 is located inside the containingcompartment 15 transverse to the longitudinal extension of themold 12. - The
introduction chamber 16 and thedischarge chamber 17 are connected, by means of adelivery pipe 18 and, respectively adischarge pipe 19, to a plant to feed and treat the cooling water, not shown in the drawings. - Some forms of embodiment, for example those shown in
FIGS. 1 and 2 , provide that theseparator element 14 comprises afirst portion 20 solidly coupled to themold body 11 and asecond portion 22 solidly attached to themold 12. - The
first portion 20 is attached to themold body 11, by means of welding for example, and is provided with a throughseating 21 configured to receive thesecond portion 22 of theseparator element 14. - Between the
first portion 20 and thesecond portion 22 of theseparator element 14 sealingmembers 23 are provided, such as packings, of the annular type or O-rings for example, which prevent the passage of cooling water between thedischarge chamber 17 and theintroduction chamber 16. - Other forms of embodiment can provide that the
separator element 14 is made in a single body and is solidly associated to themold body 11 or to themold 12 and extends taking itself into contact with themold 12 and themold body 11. - The
mold 12 develops longitudinally along a longitudinal axis Z which can have a rectilinear development, if theapparatus 10 is installed in a continuous casting machine of the vertical type, or it can have a slightly curved development if theapparatus 10 is installed in a curved continuous casting machine. - The
mold 12 comprises a first tubular element orconveyor 26, and a second tubular element orcrystallizer 27, disposed inside theconveyor 26. - The
conveyor 26 has the function of supporting thecrystallizer 27 as well as the function of separating the latter from theintroduction chamber 16 and from thedischarge chamber 17. - Between the
conveyor 26 and the crystallizer 27 ahollow space 51 is defined which is open toward the bottom to drain possible leaks of cooling water. In this way thecrystallizer 27 is not subjected to the pressure of the cooling water contained in theintroduction chamber 16 and thedischarge chamber 17, and is therefore not subjected to deformations. - The
crystallizer 27 comprises a plurality ofplates cavity 30 for the passage of the melted metal. - Each
plate passage channels 31 for the cooling water that extend through for the entire length of theplate - The
passage channels 31 can be made completely in the thickness of eachplate passage channels 31 are defined by longitudinal grooves open toward the outside and subsequently closed by closing elements. - Each
passage channel 31 has anentrance end 32 a and anexit end 32 b located in fluidic communication respectively with theintroduction chamber 16 and with thedischarge chamber 17 by means ofconnection channels plate - The entrance ends 32 a are closed in their end part by a closing
flange 34, anchored to thelower flange 25. - The exit ends 32 b, on the other hand, are closed by the
upper flange 24 of themold body 11. - Each
plate plates - One form of embodiment of the present invention, shown for example in
FIG. 3 provides that a plurality of saidconnection channels 33 b converge toward the external surface of theplates common discharge collectors 36 b. Similar forms of embodiment can provide that theconnection channels 33 a also converge toward the external surface of theplates common introduction collectors 36 a (FIG. 1 ). - The entrance ends 32 a and the exit ends 32 b of the
passage channels 31 are connected to theintroduction chamber 16 and to thedischarge chamber 17 by means of one or more connecting members. The entrance ends 32 a and the exit ends 32 b are connected toentrance sleeves 37 a and respectively exitsleeves 37 b. - Some forms of embodiment, shown for example in
FIG. 3 , provide that eachentrance sleeve 37 a and eachexit sleeve 37 b allow to feed or discharge the cooling water into or fromseveral passage channels 31. To this end the connection of theentrance sleeves 37 a and theexit sleeves 37 b is provided in correspondence to theintroduction collectors 36 a and respectively thedischarge collectors 36 b. - The
entrance sleeves 37 a and theexit sleeves 37 b are attached to theconveyor 26 by connection means 38 so as to put their useful passage section in continuity with theintroduction collectors 36 a and thedischarge collectors 36 b. - Flow choking
members 45 are associated to at least one of either theentrance sleeves 37 a or theexit sleeves 37 b, in this case to theexit sleeves 37 b. - The
flow choking members 45 allow to adjust the flow of cooling water in thepassage channels 31. A different calibration of theflow choking members 45 of each of theexit sleeves 37 b allows to obtain differentiated cooling zones in thecrystallizer 27. - The
flow choking members 45 can comprise plates with calibrated holes, commandable or servo-commandable valves, or elements to obstruct/choke the flow or similar or comparable members suitable for the purpose. - This solution is particularly efficient if products are cast that have zones of the cross section with a variable thickness, such as Beam Blanks for example, in which the central area, or “core”, has a different thickness from the external zones or “wings”.
- In the form of embodiment in
FIG. 3 , theflow adjustment members 45 comprise a plate 46 attached to theexit sleeve 37 b by connection means 48, of the threaded type for example. - The plate 46 is provided with at least a calibrated
hole 47, smaller in size than the useful passage section of theexit sleeve 37 b and which allows to adjust the flow rate of the cooling water. -
Connection members 50 are provided to connect theconveyor 26 and thecrystallizer 27 to each other. - In particular, the
connection members 50 are suitable to determine the reciprocal positioning of theplates conveyor 26. - In forms of embodiment shown in
FIGS. 1-4 , theconnection members 50 comprisefirst attachment devices 52 provided to constrain the reciprocal positioning of afirst plate 28 a with the wall of theconveyor 26. - Some forms of embodiment of the present invention provide that the
first plate 28 a is the one disposed toward the extrados of the curve of themold 12. - With reference to
FIG. 4 , it is provided that thefirst attachment devices 52 comprise a plurality ofscrews 53 insertable in throughholes 54 made in the thickness of theconveyor 26. Thescrews 53 screw into threadedholes 55 made on the external surface of thefirst plate 28 a and transverse to the longitudinal axis Z. - In the form of embodiment in
FIG. 4 , between thefirst plate 28 a and the wall of theconveyor 26 there is aspacer 56 with a distancing function. - Some forms of embodiment of the present invention provide that the wall of the
conveyor 26 to which thefirst plate 28 a is attached is provided with protruding abutment portions which define references for the correct positioning of thefirst plate 28 a with respect to theconveyor 26, and consequently also for theother plates - Second attachment devices 57 (
FIG. 3 ) are provided to determine the reciprocal coupling of asecond plate 28 b, opposite thefirst plate 28 a, of athird plate 29 a that connects in two first connection edges 35 of the first 28 a and the second 28 b plate, and of afourth plate 29 b, opposite thethird plate 29 a, which connects in two second connection edges 35 of thethird plate 29 a and thefourth plate 29 b. - In particular, the
second attachment devices 57 are configured to compress, in correspondence with their respective connection edges, thesecond plate 28 b, thethird plate 29 a and thefourth plate 29 b against thefirst plate 28 a. - Some forms of embodiment, one of which is shown in
FIG. 5 , provide that thesecond attachment devices 57 comprise a plurality ofelastic blocks 58 attached to the external surface of thesecond plate 28 b, of thethird plate 29 a and of thefourth plate 29 b, in this case to the external surface of thefourth plate 29 b, and on whichthruster elements 64 act during use. Thethruster elements 64 are attached on the external surface of theconveyor 26 and are configured to compress the elastic blocks 58. - The
elastic blocks 58 comprise a containingbody 59 with a substantially cylindrical shape, provided to contain a plurality ofelastic elements 60 inside it. - In the form of embodiment shown in
FIG. 5 , theelastic elements 60 comprise cup type springs, although in other forms of embodiment theelastic elements 60 can comprise compression springs of the helical type, conical disc springs or leaf springs or suchlike. - The containing
body 59 comprises acontainer 61 provided with anaperture 65 for the introduction of theelastic elements 60. - The
aperture 65 of thecontainer 61 is partly closed by alid 62 that provides to maintain theelastic elements 60 compressed inside thecontainer 61, and generates a first preloading thereof. - The
container 61 is housed, by mechanical interference, in a respectiveblind hole 63 made on the external surface of thesecond plate 28 b, thethird plate 29 a and thefourth plate 29 b. - The reciprocal connection between the
container 61 and thelid 62 can be the threaded type or, in other forms of embodiment, by same-shape coupling or interference, for example providing snap-in attachment teeth of the non-releasable type. - The
lid 62 is provided with ahole 67 which allows thethruster elements 64 to cooperate with theelastic elements 60. Inside thecontainer 61, interposed between theelastic elements 60 and thelid 62, there is asmall plate 66 that protrudes toward the outside through thehole 67. -
Suitable abutments 68 are provided in thesmall plate 66 and in thelid 62, to prevent thesmall plate 66 from exiting from thecontainer 61. - The
thruster elements 64 comprise athrust screw 69 which is screwed into a threadedhole 70 made through the thickness of theconveyor 26. - In particular, the threaded
hole 70 is made in a position coordinated to the one in which theblind hole 63 is provided for housing theelastic block 58. - The thrust screw 69 of each
second attachment device 57 presses against thesmall plate 66, compressing theelastic elements 60 inside the containingbody 59. - The action of compression of the
elastic elements 60 associated respectively to thesecond plate 28 b, thethird plate 29 a and thefourth plate 29 b is transmitted onto these. - The overall effect of compression of the
elastic elements 60 therefore translates into an effect of compression of thesecond plate 28 b, thethird plate 29 a and thefourth plate 29 b against thefirst plate 28 a, which is the only one directly attached to theconveyor 26. - Assembling the
crystallizer 12 with theconveyor 26 comprises a first operation of introducing only thefirst plate 28 a inside theconveyor 26, disposing it in contact against a wall of the latter. If necessary, it may be provided to interpose thespacer 56 between thefirst plate 28 a and theconveyor 26 as described above. - The
first plate 28 a is attached in theconveyor 26 by thefirst attachment devices 52 which exert a holding action of thefirst plate 28 a against the wall of theconveyor 26. - A subsequent operation is provided to introduce the
second plate 28 b, thethird plate 29 a and thefourth plate 29 b inside theconveyor 26, disposing them in reciprocal contact with their connection edges 35 of thefirst plate 28 a. - Some forms of embodiment provide that the operation of introducing the
second plate 28 b, thethird plate 29 a, and thefourth plate 29 b into theconveyor 26 occurs simultaneously. - In this case dedicated equipment can be provided that, before the insertion, reciprocally connects the
second plate 28 b, thethird plate 29 a and thefourth plate 29 b, disposing them in the position they will assume during use. - The equipment, together with the
second plate 28 b, thethird plate 29 a and thefourth plate 29 b is used to allow the simultaneous insertion of the latter inside theconveyor 26. - Other forms of embodiment can provide that the insertion of the
second plate 28 b, thethird plate 29 a and thefourth plate 29 b occurs in sequence. - Once the
second plate 28 b, thethird plate 29 a and thefourth plate 29 b are inserted in theconveyor 26, thesecond attachment devices 57 are activated. The activation of thesecond attachment devices 57 allows to compress thesecond plate 28 b, thethird plate 29 a and thefourth plate 29 b against thefirst plate 28 a. - In fact, while the
first plate 28 a is held by thefirst attachment devices 52 against theconveyor 26, thesecond plate 28 b, thethird plate 29 a and thefourth plate 29 b are thrust toward the inside of theconveyor 26 and the reciprocal cooperation between the connection edges 35 determines an assembled condition. - The fact that no direct connection is provided between the
plates plates - Other forms of embodiment of the present invention, shown for example in
FIGS. 1-7 , provide that theconnection members 50 comprisefirst positioning devices first plate 28 a and thesecond plate 28 b, and second positioning devices 72 (FIGS. 2 and 4 ) provided to determine a precise positioning of thethird plate 29 a and thefourth plate 29 b with respect to theconveyor 26 in an axial direction, that is, along the longitudinal axis Z, and a transverse direction. - The
first positioning devices second positioning devices 72 comprise a plurality of pins 73 (FIGS. 2 and 4-6) suitable to be inserted in respective throughholes 74 made in the thickness of theconveyor 26 and according to an axis that is located transverse to the longitudinal axis Z. - The position of the
pins 73 in the throughholes 74 is maintained byconnection members 75 which, in this case, comprise screws 76 inserted into throughholes 77 made in ahead 78 of thepin 73. - Each
first positioning device first housing seating 79, respectively 80, made blind in the thickness of the first 28 a and the second 28 b plate (FIGS. 6 and 7 ). - The
first housing seatings 79 of thefirst positioning devices 71 a (FIG. 6 ) are configured to constrain the position of the first 28 a and the second 28 b plate with respect to theconveyor 26 both in a direction parallel to the longitudinal axis Z and also in a transverse direction, for example orthogonal, to the longitudinal axis Z. - The
first housing seatings 80 of thefirst positioning devices 71 b (FIG. 7 ) on the other hand are configured to constrain the position of theplates - Each
second positioning device 72 comprises asecond housing seating 81 made blind in the thickness of the third 29 a and the fourth 29 b plate (FIGS. 2 and 4 ). - Finally, the
second housing seatings 81 of the second positioning devices 72 (FIGS. 2 and 4 ) are configured to constrain the position of the third 29 a and the fourth 29 b plate in a direction parallel to the longitudinal axis Z and to leave the movement free in a transverse direction, in this specific case, orthogonal, to the longitudinal axis Z, to allow any necessary adaption if theplates spacer 56 is modified. - In fact, because of wear on the
plates plates - The
first plate 28 a changes its total thickness and, in order to maintain the positioning of the internal profile unchanged with respect to the machine, aspacer 56 is inserted, with a calibrated thickness with respect to thesupport frame 26. These operations produce very slight movements of the theoretical center of theplates - In general, the positioning of the
crystallizer 27 in thesupport frame 26 is given by the abutment to which thefirst plate 28 a is attached. A rigid positioning constraint makes it impossible to assemble thecrystallizer 27 in thesupport frame 26. - In this respect, both the
first housing seatings 80 and thesecond housing seatings 81 have a greater size compared to the size of the diameter of thepin 73 in the direction in which a movement of theplates - The freedom of movement of the
plates pins 73 allows to take into account possible thermal dilations to which the latter are subjected during use, and thus prevent the onset of internal stresses that could deform thecrystallizer 27, generating cast products with unwanted geometric and microstructural characteristics, as well as reducing the useful life of thecrystallizer 27 itself. - It is clear that modifications and/or additions of parts may be made to the continuous casting apparatus as described heretofore, without departing from the field and scope of the present invention.
- It is also clear that, although the present invention has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of continuous casting apparatus, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
Claims (9)
1. Apparatus for continuous casting comprising a support structure provided with a containing casing configured to support inside it a mold equipped with a plurality of longitudinal passage channels for the passage of a cooling liquid, said containing casing and said mold together defining an introduction chamber and a discharge chamber for said cooling liquid, and said introduction chamber and said discharge chamber being fluidically connected by said passage channels, said mold comprises a first tubular element and a second tubular element disposed inside said first tubular element, wherein said second tubular element comprises a plurality of plates each provided with said passage channels and connected to each other to define a through casting cavity, and in that said first tubular element is provided with connection members to connect said passage channels of the plates respectively with said introduction chamber and with said discharge chamber.
2. Apparatus as in claim 1 , wherein a hollow space is defined between said first tubular element and said second tubular element.
3. Apparatus as in claim 1 , wherein each of said plates is served by its own connection members.
4. Apparatus as in claim 3 , wherein each of said connection members is connected to a plurality of said passage channels.
5. Apparatus as in claim 1 , wherein flow adjustment members, provided to adjust the flow rate of cooling liquid in said passage channels, are associated to at least one of said connection members.
6. Apparatus as in claim 5 , wherein said flow adjustment members comprise plates with calibrated holes, commandable or servo-commandable valves, or elements to obstruct/choke the flow.
7. Apparatus as in claim 1 , wherein said introduction chamber and said discharge chamber are divided by a separator element associated to said containing casing and to said mold.
8. Apparatus as in claim 7 , wherein said separator element is disposed transverse to the longitudinal extension of said mold.
9. Apparatus as in claim 7 , wherein said separator element comprises a first portion connected to said containing casing and a second portion connected to the walls of said first tubular element.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUD2013A000053 | 2013-04-23 | ||
IT000053A ITUD20130053A1 (en) | 2013-04-23 | 2013-04-23 | APPARATUS FOR CONTINUOUS CASTING |
PCT/IB2014/060922 WO2014174445A1 (en) | 2013-04-23 | 2014-04-23 | Apparatus for continuous casting |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160082503A1 true US20160082503A1 (en) | 2016-03-24 |
Family
ID=48579413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/786,525 Abandoned US20160082503A1 (en) | 2013-04-23 | 2014-04-23 | Apparatus for Continuous Casting |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160082503A1 (en) |
EP (1) | EP2988890B1 (en) |
CN (1) | CN105555438A (en) |
IT (1) | ITUD20130053A1 (en) |
WO (1) | WO2014174445A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109702155A (en) * | 2019-03-14 | 2019-05-03 | 山东钢铁股份有限公司 | A kind of conticaster and its special-shaped bad continuous cast mold of near-net-shape |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ2016267A3 (en) * | 2016-05-10 | 2017-06-28 | MATERIÁLOVÝ A METALURGICKÝ VÝZKUM s.r.o. | An ingot mould assembly with water cooling |
US10661324B2 (en) * | 2017-04-25 | 2020-05-26 | Stolle Machinery Company, Llc | Tool pack clamp cover |
CN112170794B (en) * | 2020-09-30 | 2022-03-08 | 江苏华龙铸铁型材有限公司 | Combined type abdomen cooling crystallizer for producing track section bar |
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US3295172A (en) * | 1963-02-14 | 1967-01-03 | Davy & United Eng Co Ltd | Continuous casting mold |
US3414047A (en) * | 1965-08-19 | 1968-12-03 | United Steel Companies Ltd | Apparatus for cooling reciprocating, curved continuous casting molds |
EP0943382A1 (en) * | 1998-03-12 | 1999-09-22 | Sms Schloemann-Siemag Aktiengesellschaft | Process and device for controlling the heat flow of a continuous casting mould during continuous slab casting |
US6158496A (en) * | 1995-12-22 | 2000-12-12 | Paul Wurth S.A. | Continuous casting die |
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DE3411359A1 (en) * | 1984-03-28 | 1985-10-31 | Mannesmann AG, 4000 Düsseldorf | CONTINUOUS CHOCOLATE FOR ROUND OR BLOCK CROSS SECTIONS, ESPECIALLY FOR THE POURING OF LIQUID STEEL |
EP0686446B1 (en) * | 1994-06-06 | 2000-08-16 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Continuous-casting crystalliser with increased heat exchange and method to increase the heat exchange in a continuous-casting crystalliser |
JPH0810906A (en) * | 1994-06-29 | 1996-01-16 | Nippon Steel Corp | Cooling structure of mold for continuous casting |
CN2236914Y (en) * | 1995-01-18 | 1996-10-09 | 中国第一冶金建设公司机械厂 | Super long copper inner sleeve type crystallizer for horizontal continuous casting machine |
EP1712313A1 (en) * | 2005-04-13 | 2006-10-18 | Profilarbed S.A. | Continuous metal casting mould |
CN102303103A (en) * | 2011-09-27 | 2012-01-04 | 中冶南方工程技术有限公司 | Efficient heat transfer type special-shaped blank continuous casting crystallizer |
CN102335728B (en) * | 2011-10-26 | 2013-07-17 | 中冶南方工程技术有限公司 | Continuous casting crystallizer for H-shaped special-shaped blank |
CN202291315U (en) * | 2011-10-26 | 2012-07-04 | 宝山钢铁股份有限公司 | Fixed water slot type continuous casting mold |
CN202263907U (en) * | 2011-10-27 | 2012-06-06 | 上海宝钢设备检修有限公司 | Cooling structure for assembled type continuous casting crystallizer |
-
2013
- 2013-04-23 IT IT000053A patent/ITUD20130053A1/en unknown
-
2014
- 2014-04-23 EP EP14731013.0A patent/EP2988890B1/en active Active
- 2014-04-23 US US14/786,525 patent/US20160082503A1/en not_active Abandoned
- 2014-04-23 WO PCT/IB2014/060922 patent/WO2014174445A1/en active Application Filing
- 2014-04-23 CN CN201480035964.8A patent/CN105555438A/en active Pending
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Publication number | Priority date | Publication date | Assignee | Title |
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US3295172A (en) * | 1963-02-14 | 1967-01-03 | Davy & United Eng Co Ltd | Continuous casting mold |
US3414047A (en) * | 1965-08-19 | 1968-12-03 | United Steel Companies Ltd | Apparatus for cooling reciprocating, curved continuous casting molds |
US6158496A (en) * | 1995-12-22 | 2000-12-12 | Paul Wurth S.A. | Continuous casting die |
EP0943382A1 (en) * | 1998-03-12 | 1999-09-22 | Sms Schloemann-Siemag Aktiengesellschaft | Process and device for controlling the heat flow of a continuous casting mould during continuous slab casting |
Cited By (1)
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CN109702155A (en) * | 2019-03-14 | 2019-05-03 | 山东钢铁股份有限公司 | A kind of conticaster and its special-shaped bad continuous cast mold of near-net-shape |
Also Published As
Publication number | Publication date |
---|---|
EP2988890A1 (en) | 2016-03-02 |
CN105555438A (en) | 2016-05-04 |
EP2988890B1 (en) | 2019-02-27 |
WO2014174445A1 (en) | 2014-10-30 |
ITUD20130053A1 (en) | 2014-10-24 |
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