EP3523069B1 - Mold divider for installing in a mold - Google Patents
Mold divider for installing in a mold Download PDFInfo
- Publication number
- EP3523069B1 EP3523069B1 EP17769088.0A EP17769088A EP3523069B1 EP 3523069 B1 EP3523069 B1 EP 3523069B1 EP 17769088 A EP17769088 A EP 17769088A EP 3523069 B1 EP3523069 B1 EP 3523069B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- divider
- mould
- mold
- block
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001816 cooling Methods 0.000 claims description 52
- 239000000110 cooling liquid Substances 0.000 claims description 18
- 238000009749 continuous casting Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000000155 melt Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 37
- 238000010276 construction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
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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
- B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
-
- 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
- B22D11/0403—Multiple 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended 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
- B22D11/04—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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
- B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/147—Multi-strand plants
Definitions
- the invention relates to a mold divider for installation in a mold.
- a metallic melt is poured into a cooled mold, in which the solidification of the melt begins.
- surface areas of the melt solidify to form a so-called strand shell, which encloses a still liquid metal core.
- a metallic casting strand comprising the strand shell is pulled out of the mold and is then cooled further.
- a mold divider is understood to be a device which divides the mold interior into two subspaces, in each of which a casting strand of reduced width can be produced, so that in particular two casting strands can be pulled out of the mold at the same time.
- US 4637452 A discloses a mold divider which can be built into a mold and which is essentially T-shaped with a beam section and a central section extending centrally from the beam section. After installation in the mold, the central section divides the mold interior of the mold and the beam section lies on top of opposing mold walls between which the mold interior runs.
- the disadvantage of this is that the installation of the mold divider in the mold or the removal of the mold divider from the mold cannot take place in the installed state of the mold on the continuous casting machine, but rather the mold is first dismantled from the continuous casting machine and brought to a maintenance area, there the Modification (installation or removal) of the mold divider is carried out and then the modified mold is only returned to the continuous caster is assembled.
- a particularly disadvantageous aspect is the time-consuming retrofitting of the so-called "top feeding" of a cold strand into the continuous casting installation, ie when the cold strand is introduced into the mold from above (from the casting side of the mold).
- top feeding is not possible in the case of molds with a mold divider, so that the cold strand must always be introduced into the mold from below (from the pouring side of the mold, the so-called “bottom feeding”) before the casting starts .
- EP 1 206 985 A1 discloses a multiple continuous caster with adjustable slide mold, which for the simultaneous continuous casting of at least two cast strands has at least two mold parts which are variably connected to one another by a displaceable intermediate part.
- US 3,717,197 A discloses a mold for the continuous casting of several rectangular casting strands and a stationary divider construction with tiltable plates for dividing the mold.
- JP 2006 247741 A discloses a mold for a continuous caster, an intermediate element for dividing the mold and a connecting structure for fixing the intermediate element.
- GB 1,400,318 A discloses a method of casting a hollow metal block using a mold having a cooled wall and a mandrel, the cooled wall surrounding the mandrel and together with the mandrel defining an annular mold cavity.
- the invention has for its object to provide an improved assembly with a mold and a mold divider for installation in the mold. In particular, that's the way it is called “top feeding" in a mold with a built-in mold divider.
- An assembly according to the invention comprises a mold and a mold divider.
- the mold divider is designed for installation in the mold, the mold having two mold walls spaced apart from one another, between which a mold interior extends for the passage of a melt.
- the mold divider comprises a divider block with two outer surfaces for dividing the mold interior into two part spaces, which are separated from one another by the outer surfaces of the divider block, and at least one cooling channel for a cooling liquid for cooling at least one outer surface which runs in the divider block.
- the invention advantageously enables rapid installation and removal of the mold divider from above, i. H. from the sprue side of the mold, into the mold or out of the mold, the at least one cooling channel running in the divider block serving for primary cooling in the mold filled melt to form strand shells on the part of the block, casting strands formed from the melt.
- the mold divider according to the invention enables the mold divider to be installed and removed when the mold is installed in a continuous casting installation.
- the cooling channels achieve uniform cooling of the strand shell of the casting strand, which has a very positive effect on the quality of the casting strand and also greatly reduces the risk of casting breakouts.
- the divider block has two opposing divider plates, each of which forms one of the two outer surfaces of the divider block, and a middle section which is arranged between the divider plates and is connected to both divider plates.
- the middle section of the divider block has, for example, two interconnected support plates, a first support plate being connected to a first divider plate and the second support plate being connected to the second divider plate.
- a cooling channel preferably also runs in each support plate and in the divider plate connected to the support plate.
- the two outer surfaces of the divider block can be cooled independently of one another by a cooling channel in each case.
- a further embodiment of the invention provides a holding element which is connected to a first end of the divider block and which, after the mold divider has been installed in the mold, rests on the two mold walls.
- the holding element preferably has at least one inlet duct running in the holding element for supplying cooling liquid to at least one cooling duct and at least one outlet duct running in the holding element for discharging cooling liquid from at least one cooling duct.
- at least one clamping screw connection is preferably provided for clamping the holding element to a mold wall.
- the mold divider can the mold is hung in and supported by the mold walls.
- a further embodiment of the invention provides a clamping wedge for supporting the divider block on a mold wall.
- the invention further provides at least one clamping piston which is guided through a mold wall opening in a mold wall and which, driven hydraulically or pneumatically or electromechanically, can be moved along its longitudinal axis towards the divider block and away from the divider block and through which a clamping force can be exerted on the divider block.
- a clamping rod is provided, for example, which can be guided through a clamping piston recess in the at least one clamping piston.
- a further embodiment of the invention provides a strand guide block which adjoins a second end of the divider block and which has strand guide rollers for guiding casting strands discharged from the mold. This advantageously enables a lateral strand guidance of casting strands discharged from the mold through the mold divider.
- a further embodiment of the invention provides at least one cooling line running between the two outer surfaces of the divider block for the passage of a cooling liquid to the strand guide block.
- the holding element preferably also has a connecting line connected to the cooling line for supplying cooling liquid to the cooling line.
- the cooling lines advantageously enable secondary cooling of casting strands dispensed from the mold by dispensing cooling liquid onto the casting strands in the region of the strand guide block, the cooling liquid being dispensed, for example, by spray nozzles which are each arranged above a strand guide roller.
- the holding element is also advantageously used for supplying cooling liquid to each cooling line.
- Another embodiment of the invention provides temperature sensors for detecting temperatures of the two outer surfaces of the divider block.
- the temperatures of the two outer surfaces of the divider block can advantageously be monitored, which are crucial, in particular, for the formation of strand shells on these outer surfaces.
- the invention also provides a method for the continuous casting of two casting strands in a mold using an assembly according to the invention.
- a mold divider that may be built into the mold is first removed from the mold.
- a cold strand which has a cold strand head with a cold strand recess for the mold divider, is then passed through the mold from a casting side, so that the cold strand head is arranged on the pouring side outside the mold.
- the mold divider is installed in the mold. After installing the The cold strand head is inserted into the mold from the pouring side so that the mold divider protrudes into the cold strand recess.
- This method using a mold divider according to the invention realizes the above-mentioned top feeding of a cold strand while simultaneously casting two casting strands in a mold, the top feeding being made possible in that the mold divider can be removed and installed in the mold without the mold being removed from the mold Disassemble the continuous caster.
- the mold divider has a clamping rod that can be guided through a clamping piston recess in the at least one clamping piston
- the mold divider is first inserted into the mold from the sprue side without the clamping rod to install the mold divider in the mold.
- each clamping piston is moved to the divider block of the mold divider and the clamping rod is then guided from the sprue side through the clamping piston recess of each clamping piston.
- Each clamping piston is then moved away from the divider block until the clamping rod is clamped in the clamping piston recess of the clamping piston.
- Figure 1 shows a perspective view of a mold 1 and a mold divider 3 installed in the mold 1.
- the mold 1 has mutually spaced, mutually parallel mold walls 5, 6, between which a mold interior 7 extends for the passage of a melt.
- the mold divider 3 comprises a divider block 9 with two outer surfaces 11, 12 for dividing the mold interior 7 into two partial spaces which are separated from one another by the outer surfaces 11, 12 of the divider block 9, wherein in Figure 1 only a first outer surface 11 is visible. Furthermore, the mold divider 3 comprises a holding element 10 which is connected to a first end of the divider block 9 and which, after the mold divider 3 has been installed in the mold 1, rests on the upper sides of the two mold walls 5, 6 and, in the exemplary embodiment shown, faces away from the mold interior 7 Pages stick out.
- the holding element 10 is connected to the divider block 9, for example, by screw connections.
- the outer surfaces 11, 12 each form a casting cone on both sides of the divider block 9 to compensate for the strand shrinkage of the casting strands formed in the mold 1 when passing through the mold 1.
- the outer surfaces 11, 12 are therefore not plane-parallel, but have one with increasing Distance from the holding element 10 increasing distance from each other.
- Figure 2 shows a perspective view of a side having a first mold wall 5 in FIG Figure 1 shown mold 1 and the mold divider 3 installed in the mold 1.
- Figure 3 shows a perspective view of a side having the second mold wall 6 of FIG Figure 1 shown mold 1 and the mold divider 3 installed in the mold 1.
- Figure 4 shows a sectional view of the in Figure 1 shown mold 1 and the mold divider 3 installed in the mold 1.
- the divider block 9 comprises two opposing divider plates 13, 14, each of which forms one of the two outer surfaces 11, 12 of the divider block 9, and a middle section 15 arranged between the divider plates 13, 14, which is connected to both divider plates 13, 14.
- the divider plates 13, 14 are designed, for example, as copper plates.
- the middle section 15 of the divider block 9 has two support plates 17, 18 which are connected to one another, a first support plate 17 being connected to a first divider plate 13, for example by screw connections, and the second support plate 18 to the second, for example by screw connections Splitter plate 14 is connected.
- temperature sensors for example thermocouples, for detecting temperatures of the two divider plates 13, 14 can be arranged on the divider block 9.
- the support plates 17, 18 are connected to one another on two opposite wall sides 19, 20 of the divider block 9, each of which faces a mold wall 5, 6, by means of screw connections. These screw connections have screws (not shown in the figures) which are each guided through bores 21 in two mutually corresponding connecting lugs 23, 24, which on the respective wall side 19, 20 from the support plates 17, 18 to the respective mold wall 5, 6 stick out.
- the mold divider 3 is fixed in the mold 1 by jamming.
- a clamping wedge 25 is inserted between the first mold wall 5 and the support plates 17, 18 for clamping, and the holding element 10 is connected to the first mold wall 5 by means of clamping screw connections 27.
- the divider block 9 can be detachably coupled to two clamping pistons 31 via two clamping piston receptacles 29 arranged on the support plates 17, 18.
- Each clamping piston 31 is guided through a mold wall opening 33 in the second mold wall 6 into one of the two clamping piston receptacles 29 and can be moved along its longitudinal axis by a hydraulic cylinder 35.
- the mold divider 3 has a clamping rod 39 which is guided through a holding element recess 51 in the holding element 10, clamping piston recesses 52 in the clamping piston 31 and clamping piston receiving recesses 53 in the clamping piston receptacles 29.
- the mold divider 3 also has two cooling lines 41, 42 running between the two outer surfaces 11, 12 of the divider block 9, a first cooling line 41 being a cooling tube which runs on a first wall side 19 of the divider block 9 facing the first mold wall 5, and the second cooling line 42 is a cooling pipe which runs on a second wall side 20 of the divider block 9 facing the second mold wall 6.
- Long hoses or pipes (not shown) can be screwed onto the cooling tubes, which allow the mold divider 3 to be pulled out of the mold 1 to such an extent that it can be pivoted away from the mold 1 without removing the mold 1 from the continuous casting installation.
- the holding element 10 For each cooling line 41, 42, the holding element 10 has a connecting line 43, 44 connected to the cooling line 41, 42 for supplying cooling liquid to the cooling line 41, 42.
- the mold divider 3 has a strand guide block 45 which adjoins a second end of the divider block 9 facing away from the holding element 10 and has a plurality of strand guide rollers 47 for guiding casting strands discharged from the mold 1.
- Each cooling line 41, 42 extends from the holding element 10 up to the strand guide block 45 for dispensing cooling liquid onto the strand guide block 45.
- At least one lubricant line (not shown) can be provided analogously to the supply of the coolant to the strand guide block 45 and runs on or in the divider block 9 from the holding element 10 to the strand guide block 45.
- Each mold wall 5, 6 is on both sides of the divider block 9 on the part of the mold interior 7 with one each Wall plate 49 clad, which extends from the divider block 9 to one end of the mold wall 5, 6.
- a cooling channel 55 for cooling liquid for cooling the dividing plate 13, 14 runs in each support plate 17, 18 and the divider plate 13, 14 connected to the support plate 17, 18.
- Each cooling channel 55 is provided with an inlet channel 57 running in the holding element 10 for supplying coolant to the cooling channel 55 and connected to an outlet channel 59 running in the holding element 10 for removing cooling liquid from the cooling channel 55.
- the holding element 10 has an inlet opening 61 for each inlet channel 57 and an outlet opening 63 for each outlet channel 59.
- the inlet openings 61 and the outlet openings 63 are arranged on an underside of the holding element 10 (see Figure 5 ), in other exemplary embodiments, however, can alternatively be arranged on the top of the holding element 10 or laterally.
- Each cooling duct 55 runs, for example, downward from the inlet duct 57 connected to it, first in the respective support plate 17, 18 in the direction of the strand guide block 45, then from the support plate 17, 18 into the divider plate 13, 14 connected to the support plate 17, 18, and then in the divider plate 13, 14 upwards in the direction of the holding element 10 and finally in the support plate 17, 18 to the outlet duct 59 connected to the cooling duct 55 in the holding element 10.
- Figure 5 branches a perspective view of the in Figure 1 The mold 1 shown and the mold divider 3 installed in the mold 1 in the region of the hydraulic cylinders 35 and the outlet openings 63 of the outlet channels 59.
- the mold divider 3 is installed in the mold 1 from above.
- the mold divider 3 is first inserted into the mold 1 without the clamping rod 39 and on the first Wall side 19 clamped to the first mold wall 5 by the clamping wedge 25 and the clamping screw connections 27.
- each clamping piston 31 is checked and moved with reduced pressure to the mold divider 3 into one of the clamping piston receptacles 29.
- the clamping rod 39 is installed from above and then the clamping pistons 31 are briefly moved in the other direction under reduced pressure until the clamping rod 39 is clamped in the clamping piston recesses 52.
- the procedure is reversed. First, the pressure of the clamping piston 31 on the clamping rod 39 is released by a short movement of the clamping piston 31, so that the clamping rod 39 can be removed. After removal of the clamping rod 39, the clamping pistons 31 are moved away from the mold divider 3. Then the mold divider 3 is lifted up out of the mold 1.
- the Figures 6 to 9 show the process for the simultaneous continuous casting of two casting strands in a mold 1 using a mold divider 3.
- a mold divider 3 built into the mold 1 is first removed from the mold 1 in the manner described above.
- a cold strand 65 which has a cold strand head 67 with a cold strand recess 69 for the mold divider 3 is guided from the casting side of the mold 1 through the mold 1, so that the cold strand head 67 is arranged on the pouring side outside the mold 1.
- the mold divider 3 is installed in the mold 1 in the manner described above.
- the cold strand head 67 is again inserted a little into the mold 1, so that the mold divider 3 protrudes into the cold strand recess 69 and the cold strand 65 closes the mold 1 on the outlet side.
- the actual continuous casting process is then started, in which the melt is filled into the mold 1 on both sides of the mold divider 3.
- Figure 6 schematically shows a front view of the cold strand head 67 of the cold strand 65 with the cold strand recess 69 for the mold divider 3.
- the cold strand recess 69 is arranged in the middle of a cold strand end 66 of the cold strand 65 and has a width which corresponds to a mold divider width b of the mold divider 3 used in each case ( please refer Figure 10 ).
- Figure 7 shows how the cold strand 65 is guided from the casting side of the mold 1 through the mold 1.
- the cold strand 65 has a plurality of cold strand members 70 which are movably linked to one another.
- Figure 8 shows the position of the cold strand head 67 after the cold strand 65 has been passed through the mold 1 and the mold divider 3 installed in the mold 1.
- Figure 9 shows the position of the cold strand head 67 and the cold strand end 66 after the mold 1 has been closed by the cold strand 65.
- different mold dividers 3 are preferably provided, which differ from one another by their mold part widths b.
- the mold divider 3 used in each case is selected as a function of the intended casting strand width a, as follows based on Figure 10 is explained.
- Figure 10 schematically shows a longitudinal sectional view through a mold 1 with a mold divider 3. Also shown are the side walls 71, 72 of the mold 1 opposite the outer surfaces 11, 12 and pouring positions 73, 74 for pouring melt on both sides of the mold divider 3, each Pouring position 73, 74 the position of a center of one filled in the mold 1 Melt flow indicates.
- the side walls 71, 72 are each displaceable relative to the mold divider 3 within a displacement region 75, 76.
- the distance between a side wall 71, 72 and the outer surface 11, 12 of the mold divider 3 facing it defines the casting strand width a of the casting strand which is poured between the side wall 71, 72 and the outer surface 11, 12.
- the mold divider 3 used for the continuous casting of casting strands of a predetermined casting strand width a is preferably selected such that its mold divider width b enables the distance of each outer surface 11, 12 to the adjacent pouring position 73, 74 to be as close as possible to half the casting strand width a, so that the pouring position 73, 74 is as close as possible to the center between a side wall 71, 72 and the outer surface 11, 12 of the mold divider 3 facing it. This advantageously enables an optimal filling of melt on both sides of the mold divider 3.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
Description
Die Erfindung betrifft einen Kokillenteiler zum Einbau in eine Kokille.The invention relates to a mold divider for installation in a mold.
In Stranggießanlagen wird eine metallische Schmelze in eine gekühlte Kokille, in der die Erstarrung der Schmelze beginnt, gegossen. Innerhalb des Kokilleninnenraums der Kokille erstarren Oberflächenbereiche der Schmelze zu einer so genannten Strangschale, die einen noch flüssigen Metallkern umschließt. Aus der Kokille wird ein die Strangschale aufweisender metallischer Gießstrang ausgezogen, der danach weiter abgekühlt wird. Unter einem Kokillenteiler wird eine Vorrichtung verstanden, die den Kokilleninnenraum in zwei Teilräume unterteilt, in denen jeweils ein Gießstrang reduzierter Breite erzeugt werden kann, so dass von der Kokille insbesondere gleichzeitig zwei Gießstränge ausgezogen werden können.In continuous casting plants, a metallic melt is poured into a cooled mold, in which the solidification of the melt begins. Within the mold interior of the mold, surface areas of the melt solidify to form a so-called strand shell, which encloses a still liquid metal core. A metallic casting strand comprising the strand shell is pulled out of the mold and is then cooled further. A mold divider is understood to be a device which divides the mold interior into two subspaces, in each of which a casting strand of reduced width can be produced, so that in particular two casting strands can be pulled out of the mold at the same time.
Nachteilig daran ist, dass der Einbau des Kokillenteilers in die Kokille bzw. der Ausbau des Kokillenteilers aus der Kokille nicht im eingebauten Zustand der Kokille an der Stranggießanlage erfolgen kann, sondern die Kokille zuerst von der Stranggießanlage demontiert und in einen Wartungsbereich gebracht wird, dort der Umbau (Ein- bzw. Ausbau) des Kokillenteilers erfolgt und anschließend die umgebaute Kokille erst wieder an der Stranggießanlage montiert wird. Dies bedingt, dass der Umbau des Kokillenteilers lange dauert, währenddessen die Stranggießanlage nicht produzieren kann und dadurch deren Produktivität sinkt. Besonders nachteilig ist der aufwändige Umbau beim so genannten "top feeding" eines Kaltstrangs in die Stranggießanlage, d. h. beim Einführen des Kaltstrangs von oben (von der Einggussseite der Kokille aus) in die Kokille. Nach dem Stand der Technik ist das "top feeding" bei Kokillen mit Kokillenteiler nicht möglich, so dass der Kaltstrang vor dem Gießstart stets von unten (von der Ausgussseite der Kokille aus, das so genannte "bottom feeding") in die Kokille eingeführt werden muss.The disadvantage of this is that the installation of the mold divider in the mold or the removal of the mold divider from the mold cannot take place in the installed state of the mold on the continuous casting machine, but rather the mold is first dismantled from the continuous casting machine and brought to a maintenance area, there the Modification (installation or removal) of the mold divider is carried out and then the modified mold is only returned to the continuous caster is assembled. This means that the conversion of the mold divider takes a long time, during which the continuous caster cannot produce, which reduces its productivity. A particularly disadvantageous aspect is the time-consuming retrofitting of the so-called "top feeding" of a cold strand into the continuous casting installation, ie when the cold strand is introduced into the mold from above (from the casting side of the mold). According to the prior art, "top feeding" is not possible in the case of molds with a mold divider, so that the cold strand must always be introduced into the mold from below (from the pouring side of the mold, the so-called "bottom feeding") before the casting starts .
Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Baugruppe mit einer Kokille und einem Kokillenteiler zum Einbau in die Kokille anzugeben. Insbesondere soll das so genannte "top feeding" bei einer Kokille mit eingebautem Kokillenteiler ermöglicht werden.The invention has for its object to provide an improved assembly with a mold and a mold divider for installation in the mold. In particular, that's the way it is called "top feeding" in a mold with a built-in mold divider.
Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 und die Merkmale des Anspruchs 14 gelöst.The object is achieved by the features of
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Eine erfindungsgemäße Baugruppe umfasst eine Kokille und einen Kokillenteiler. Der Kokillenteiler ist zum Einbau in die Kokille ausgelegt, wobei die Kokille zwei voneinander beabstandete Kokillenwände aufweist, zwischen denen sich ein Kokilleninnenraum zur Durchleitung einer Schmelze erstreckt. Der Kokillenteiler umfasst einen Teilerblock mit zwei Außenoberflächen zur Unterteilung des Kokilleninnenraums in zwei Teilräume, die durch die Außenoberflächen des Teilerblocks voneinander getrennt sind, und wenigstens einen in dem Teilerblock verlaufenden Kühlkanal für eine Kühlflüssigkeit zur Kühlung wenigstens einer Außenoberfläche.An assembly according to the invention comprises a mold and a mold divider. The mold divider is designed for installation in the mold, the mold having two mold walls spaced apart from one another, between which a mold interior extends for the passage of a melt. The mold divider comprises a divider block with two outer surfaces for dividing the mold interior into two part spaces, which are separated from one another by the outer surfaces of the divider block, and at least one cooling channel for a cooling liquid for cooling at least one outer surface which runs in the divider block.
Der Erfindung ermöglicht vorteilhaft ein schnelles Ein- und Ausbauen des Kokillenteilers von oben, d. h. von der Eingussseite der Kokille, in die Kokille bzw. aus der Kokille, wobei der wenigstens eine in dem Teilerblock verlaufende Kühlkanal der Primärkühlung in die Kokille gefüllter Schmelze zur Ausbildung teilerblockseitiger Strangschalen aus der Schmelze gebildeter Gießstränge dient.The invention advantageously enables rapid installation and removal of the mold divider from above, i. H. from the sprue side of the mold, into the mold or out of the mold, the at least one cooling channel running in the divider block serving for primary cooling in the mold filled melt to form strand shells on the part of the block, casting strands formed from the melt.
Durch den erfindungsgemäßen Kokillenteiler wird das Ein- und Ausbauen des Kokillenteilers im in einer Stranggießanlage eingebauten Zustand der Kokille ermöglicht. Außerdem wird durch die Kühlkanäle eine gleichmäßige Abkühlung der Strangschale des Gießstrangs erreicht, was sich sehr positiv auf die Qualität des Gießstrangs auswirkt und zudem das Risiko für Gießausbrüche stark reduziert.The mold divider according to the invention enables the mold divider to be installed and removed when the mold is installed in a continuous casting installation. In addition, the cooling channels achieve uniform cooling of the strand shell of the casting strand, which has a very positive effect on the quality of the casting strand and also greatly reduces the risk of casting breakouts.
Eine Ausgestaltung der Erfindung sieht vor, dass der Teilerblock zwei sich gegenüber liegende Teilerplatten, die jeweils eine der beiden Außenoberflächen des Teilerblocks ausbilden, und einen zwischen den Teilerplatten angeordneten Mittelabschnitt, der mit beiden Teilerplatten verbunden ist, aufweist. Der Mittelabschnitt des Teilerblocks weist beispielsweise zwei miteinander verbundene Stützplatten auf, wobei eine erste Stützplatte mit einer ersten Teilerplatte verbunden ist und die zweite Stützplatte mit der zweiten Teilerplatte verbunden ist. Durch diese Ausführung des Teilerblocks können an dem Mittelabschnitt des Teilerblocks vorteilhaft weitere Komponenten, insbesondere die Kühlleitungen, angeordnet werden.One embodiment of the invention provides that the divider block has two opposing divider plates, each of which forms one of the two outer surfaces of the divider block, and a middle section which is arranged between the divider plates and is connected to both divider plates. The middle section of the divider block has, for example, two interconnected support plates, a first support plate being connected to a first divider plate and the second support plate being connected to the second divider plate. This design of the divider block advantageously allows further components, in particular the cooling lines, to be arranged on the central section of the divider block.
Vorzugsweise verläuft ferner in jeder Stützplatte und in der mit der Stützplatte verbundenen Teilerplatte ein Kühlkanal. Dadurch können die beiden Außenoberflächen des Teilerblocks unabhängig voneinander durch jeweils einen Kühlkanal gekühlt werden. Durch die Ausbildung separater Kühlkanäle in Verbindung mit einem Durchflusssensor bzw. einem Drucksensor kann man beispielsweise einfach erkennen, ob ein Kühlkanal verstopft ist oder zumindest einen höheren Strömungswiderstand aufweist. Diese Information kann dem Bedienpersonal bereitgestellt werden, so dass das Problem bei einer Unterbrechung des Gießprozesses behoben werden kann.A cooling channel preferably also runs in each support plate and in the divider plate connected to the support plate. As a result, the two outer surfaces of the divider block can be cooled independently of one another by a cooling channel in each case. By forming separate cooling channels in connection with a flow sensor or a pressure sensor, it can be easily recognized, for example, whether a cooling channel is blocked or at least has a higher flow resistance. This information can be provided to the operating personnel so that the problem can be remedied if the casting process is interrupted.
Eine weitere Ausgestaltung der Erfindung sieht ein mit einem ersten Ende des Teilerblocks verbundenes Halteelement vor, das nach dem Einbau des Kokillenteilers in die Kokille auf den beiden Kokillenwänden aufliegt. Vorzugsweise weist das Halteelement wenigstens einen in dem Halteelement verlaufenden Einlasskanal zur Zuführung von Kühlflüssigkeit zu wenigstens einem Kühlkanal und wenigstens einen in dem Halteelement verlaufenden Auslasskanal zur Abführung von Kühlflüssigkeit aus wenigstens einem Kühlkanal auf. Ferner ist vorzugsweise wenigstens eine Klemmschraubverbindung zur Verklemmung des Halteelements mit einer Kokillenwand vorgesehen. Durch das Halteelement kann der Kokillenteiler in die Kokille eingehängt und von den Kokillenwänden gestützt werden. Durch in dem Halteelement verlaufende Ein- und Auslasskanäle für wenigstens einen Kühlkanal wird das Halteelement vorteilhaft zur Zuleitung von Kühlflüssigkeit zu wenigstens einem Kühlkanal genutzt.A further embodiment of the invention provides a holding element which is connected to a first end of the divider block and which, after the mold divider has been installed in the mold, rests on the two mold walls. The holding element preferably has at least one inlet duct running in the holding element for supplying cooling liquid to at least one cooling duct and at least one outlet duct running in the holding element for discharging cooling liquid from at least one cooling duct. Furthermore, at least one clamping screw connection is preferably provided for clamping the holding element to a mold wall. Through the holding element, the mold divider can the mold is hung in and supported by the mold walls. By means of inlet and outlet channels for at least one cooling channel running in the holding element, the holding element is advantageously used for supplying cooling liquid to at least one cooling channel.
Eine weitere Ausgestaltung der Erfindung sieht einen Klemmkeil zur Abstützung des Teilerblocks an einer Kokillenwand vor. Dadurch kann die Position des Kokillenteilers bei einem Verklemmen des Kokillenteilers mit einer Kokillenwand fixiert werden.A further embodiment of the invention provides a clamping wedge for supporting the divider block on a mold wall. As a result, the position of the mold divider can be fixed when the mold divider is jammed with a mold wall.
Die Erfindung sieht ferner zumindest einen durch eine Kokillenwandöffnung in einer Kokillenwand geführten Klemmkolben vor, der hydraulisch oder pneumatisch oder elektromechanisch angetrieben entlang seiner Längsachse zu dem Teilerblock hin und von dem Teilerblock weg bewegbar ist und durch den eine Klemmkraft auf den Teilerblock ausübbar ist. Ferner ist beispielsweise ein Klemmstab vorgesehen, der durch eine Klemmkolbenausnehmung in dem zumindest einen Klemmkolben führbar ist. Diese Ausgestaltung der Erfindung ermöglicht vorteilhaft ein lösbares Verklemmen des Kokillenteilers in der Kokille durch wenigstens einen Klemmkolben. Dies ist insbesondere bei breiten Brammenformaten vorteilhaft, da nach dem Stand der Technik die Breitseiten durchgebogen werden und dadurch ein Spalt zwischen dem Kokillenteiler und zumindest einer Breitseite entstehen kann, so dass Schmelze in den Spalt eintreten bzw. aus dem Formhohlraum der Kokille austreten kann. Dies wird durch die erfindungsgemäße Konstruktion zuverlässig vermieden.The invention further provides at least one clamping piston which is guided through a mold wall opening in a mold wall and which, driven hydraulically or pneumatically or electromechanically, can be moved along its longitudinal axis towards the divider block and away from the divider block and through which a clamping force can be exerted on the divider block. Furthermore, a clamping rod is provided, for example, which can be guided through a clamping piston recess in the at least one clamping piston. This embodiment of the invention advantageously enables releasable clamping of the mold divider in the mold by at least one clamping piston. This is particularly advantageous in the case of wide slab formats, since, according to the prior art, the broad sides are bent and a gap can thus arise between the mold divider and at least one broad side, so that melt can enter the gap or exit from the mold cavity of the mold. This is reliably avoided by the construction according to the invention.
Eine weitere Ausgestaltung der Erfindung sieht einen sich an ein zweites Ende des Teilerblocks anschließenden Strangführungsblock vor, der Strangführungsrollen zur Führung aus der Kokille ausgegebener Gießstränge aufweist. Dies ermöglicht vorteilhaft eine seitliche Strangführung aus der Kokille ausgegebener Gießstränge durch den Kokillenteiler.A further embodiment of the invention provides a strand guide block which adjoins a second end of the divider block and which has strand guide rollers for guiding casting strands discharged from the mold. This advantageously enables a lateral strand guidance of casting strands discharged from the mold through the mold divider.
Eine weitere Ausgestaltung der Erfindung sieht wenigstens eine zwischen den beiden Außenoberflächen des Teilerblocks verlaufende Kühlleitung zur Durchleitung einer Kühlflüssigkeit zu dem Strangführungsblock vor. Vorzugsweise weist das Halteelement ferner für jede Kühlleitung eine mit der Kühlleitung verbundene Verbindungsleitung zur Zuleitung von Kühlflüssigkeit zu der Kühlleitung auf. Die Kühlleitungen ermöglichen vorteilhaft eine Sekundärkühlung aus der Kokille ausgegebener Gießstränge durch Ausgabe von Kühlflüssigkeit auf die Gießstränge im Bereich des Strangführungsblocks, wobei die Ausgabe der Kühlflüssigkeit beispielsweise durch Spritzdüsen erfolgt, die jeweils oberhalb einer Strangführungsrolle angeordnet sind. Durch die Anordnung einer Verbindungsleitung für jede Kühlleitung an dem Halteelement wird das Halteelement ferner vorteilhaft zur Zuleitung von Kühlflüssigkeit zu jeder Kühlleitung genutzt.A further embodiment of the invention provides at least one cooling line running between the two outer surfaces of the divider block for the passage of a cooling liquid to the strand guide block. For each cooling line, the holding element preferably also has a connecting line connected to the cooling line for supplying cooling liquid to the cooling line. The cooling lines advantageously enable secondary cooling of casting strands dispensed from the mold by dispensing cooling liquid onto the casting strands in the region of the strand guide block, the cooling liquid being dispensed, for example, by spray nozzles which are each arranged above a strand guide roller. By arranging a connecting line for each cooling line on the holding element, the holding element is also advantageously used for supplying cooling liquid to each cooling line.
Eine weitere Ausgestaltung der Erfindung sieht Temperatursensoren zur Erfassung von Temperaturen der beiden Außenoberflächen des Teilerblocks vor. Dadurch können vorteilhaft die Temperaturen der beiden Außenoberflächen des Teilerblocks überwacht werden, die insbesondere für die Bildung von Strangschalen an diesen Außenoberflächen entscheidend sind.Another embodiment of the invention provides temperature sensors for detecting temperatures of the two outer surfaces of the divider block. As a result, the temperatures of the two outer surfaces of the divider block can advantageously be monitored, which are crucial, in particular, for the formation of strand shells on these outer surfaces.
Die Erfindung sieht außerdem ein Verfahren zum gleichzeitigen Stranggießen zweier Gießstränge in einer Kokille unter Verwendung einer erfindungsgemäßen Baugruppe vor. Dabei wird vor einem Stranggießbeginn ein etwaig in die Kokille eingebauter Kokillenteiler zunächst aus der Kokille ausgebaut. Danach wird ein Kaltstrang, der einen Kaltstrangkopf mit einer Kaltstrangausnehmung für den Kokillenteiler aufweist, von einer Eingussseite der Kokille durch die Kokille geführt, so dass der Kaltstrangkopf auf der Ausgussseite außerhalb der Kokille angeordnet ist. Nach dem Durchführen des Kaltstrangs durch die Kokille wird der Kokillenteiler in die Kokille eingebaut. Nach dem Einbau des Kokillenteilers wird der Kaltstrangkopf von der Ausgussseite in die Kokille eingeführt, so dass der Kokillenteiler in die Kaltstrangausnehmung hineinragt. Dieses Verfahren unter Verwendung eines erfindungsgemäßen Kokillenteilers realisiert das oben genannte top feeding eines Kaltstrangs beim gleichzeitigen Stranggießen zweier Gießstränge in einer Kokille, wobei das top feeding dadurch ermöglicht wird, dass der Kokillenteiler in die Kokille aus- und eingebaut werden kann, ohne die Kokille von der Stranggießanlage zu demontieren.The invention also provides a method for the continuous casting of two casting strands in a mold using an assembly according to the invention. Before a continuous casting process begins, a mold divider that may be built into the mold is first removed from the mold. A cold strand, which has a cold strand head with a cold strand recess for the mold divider, is then passed through the mold from a casting side, so that the cold strand head is arranged on the pouring side outside the mold. After the cold strand has been passed through the mold, the mold divider is installed in the mold. After installing the The cold strand head is inserted into the mold from the pouring side so that the mold divider protrudes into the cold strand recess. This method using a mold divider according to the invention realizes the above-mentioned top feeding of a cold strand while simultaneously casting two casting strands in a mold, the top feeding being made possible in that the mold divider can be removed and installed in the mold without the mold being removed from the mold Disassemble the continuous caster.
Wenn der Kokillenteiler einen durch eine Klemmkolbenausnehmung in dem zumindest einen Klemmkolben führbaren Klemmstab aufweist, wird zum Einbau des Kokillenteilers in die Kokille zunächst der Kokillenteiler von der Eingussseite ohne den Klemmstab in die Kokille eingeführt. Dann wird jeder Klemmkolben zu dem Teilerblock des Kokillenteilers verfahren und der Klemmstab wird danach von der Eingussseite durch die Klemmkolbenausnehmung jedes Klemmkolbens geführt. Anschließend wird jeder Klemmkolben von dem Teilerblock weg verfahren, bis der Klemmstab in der Klemmkolbenausnehmung des Klemmkolbens verklemmt ist. Dadurch wird vorteilhaft eine Verklemmung des Kokillenteilers und der Kokille mit den oben bereits genannten Vorteilen erreicht.If the mold divider has a clamping rod that can be guided through a clamping piston recess in the at least one clamping piston, the mold divider is first inserted into the mold from the sprue side without the clamping rod to install the mold divider in the mold. Then each clamping piston is moved to the divider block of the mold divider and the clamping rod is then guided from the sprue side through the clamping piston recess of each clamping piston. Each clamping piston is then moved away from the divider block until the clamping rod is clamped in the clamping piston recess of the clamping piston. This advantageously jams the mold divider and the mold with the advantages already mentioned above.
Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung von Ausführungsbeispielen, die im Zusammenhang mit den Zeichnungen näher erläutert werden. Dabei zeigen:
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FIG 1 eine perspektivische Darstellung einer Kokille und eines in die Kokille eingebauten Kokillenteilers, -
FIG 2 eine perspektivische Darstellung einer ersten Seite der in dargestellten Kokille und des in die Kokille eingebauten Kokillenteilers,Figur 1 -
FIG 3 eine perspektivische Darstellung einer zweiten Seite der in dargestellten Kokille und des in die Kokille eingebauten Kokillenteilers,Figur 1 -
FIG 4 eine Schnittdarstellung der in dargestellten Kokille und des in die Kokille eingebauten Kokillenteilers,Figur 1 -
FIG 5 eine perspektivische Darstellung der in dargestellten Kokille und des in die Kokille eingebauten Kokillenteilers im Bereich zweier Hydraulikzylinder,Figur 1 -
FIG 6 eine Vorderansicht eines Kaltstrangkopfes eines Kaltstrangs, -
FIG 7 einen durch eine Kokille geführten Kaltstrang, -
FIG 8 einen Kaltstrangkopf eines Kaltstrangs nach dem Durchführen des Kaltstrangs durch eine Kokille und einen in die Kokille eingebauten Kokillenteiler, -
FIG 9 einen Kaltstrangkopf eines Kaltstrangs nach dem Verschließen einer Kokille durch den Kaltstrang und einen in die Kokille eingebauten Kokillenteiler, und -
FIG 10 schematisch eine Längsschnittdarstellung durch eine Kokille mit einem Kokillenteiler.
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FIG 1 1 shows a perspective view of a mold and a mold divider built into the mold, -
FIG 2 a perspective view of a first side of the inFigure 1 shown mold and the mold divider built into the mold, -
FIG 3 a perspective view of a second side of the inFigure 1 shown mold and the mold divider built into the mold, -
FIG 4 a sectional view of the inFigure 1 shown mold and the mold divider built into the mold, -
FIG 5 a perspective view of the inFigure 1 shown mold and the mold divider built into the mold in the area of two hydraulic cylinders, -
FIG 6 2 shows a front view of a cold strand head of a cold strand, -
FIG 7 a cold strand passed through a mold, -
FIG 8 a cold strand head of a cold strand after the cold strand has been passed through a mold and a mold divider built into the mold, -
FIG. 9 a cold strand head of a cold strand after the mold has been closed by the cold strand and a mold divider built into the mold, and -
FIG 10 schematically shows a longitudinal section through a mold with a mold divider.
Einander entsprechende Teile sind in allen Figuren mit denselben Bezugszeichen versehen.Corresponding parts are provided with the same reference symbols in all figures.
Die Kokille 1 weist voneinander beabstandete, zueinander parallele Kokillenwände 5, 6 auf, zwischen denen sich ein Kokilleninnenraum 7 zur Durchleitung einer Schmelze erstreckt.The
Der Kokillenteiler 3 umfasst einen Teilerblock 9 mit zwei Außenoberflächen 11, 12 zur Unterteilung des Kokilleninnenraums 7 in zwei Teilräume, die durch die Außenoberflächen 11, 12 des Teilerblocks 9 voneinander getrennt sind, wobei in
An den außen liegenden Schmalseiten der Kokille 1, die den Außenoberflächen 11, 12 des Teilerblocks 9 gegenüber liegen, wird der Kokilleninnenraum 7 in bekannter Weise durch in
Der Teilerblock 9 umfasst zwei sich gegenüber liegende Teilerplatten 13, 14, die jeweils eine der beiden Außenoberflächen 11, 12 des Teilerblocks 9 ausbilden, und einen zwischen den Teilerplatten 13, 14 angeordneten Mittelabschnitt 15, der mit beiden Teilerplatten 13, 14 verbunden ist. Die Teilerplatten 13, 14 sind beispielsweise als Kupferplatten ausgeführt. Der Mittelabschnitt 15 des Teilerblocks 9 weist zwei miteinander verbundene Stützplatten 17, 18 auf, wobei eine erste Stützplatte 17, beispielsweise durch Schraubverbindungen, mit einer ersten Teilerplatte 13 verbunden ist und die zweite Stützplatte 18, beispielsweise durch Schraubverbindungen, mit der zweiten Teilerplatte 14 verbunden ist. Optional können an dem Teilerblock 9 Temperatursensoren, beispielsweise Thermoelemente, zur Erfassung von Temperaturen der beiden Teilerplatten 13, 14 angeordnet sein.The
Die Stützplatten 17, 18 sind an zwei sich gegenüber liegenden Wandseiten 19, 20 des Teilerblocks 9, die jeweils einer Kokillenwand 5, 6 zugewandt sind, miteinander durch Schraubverbindungen verbunden. Diese Schraubverbindungen weisen (in den Figuren nicht dargestellte) Schrauben auf, die jeweils durch Bohrungen 21 in zwei zueinander korrespondierenden Verbindungsnasen 23, 24 geführt sind, die auf der jeweiligen Wandseite 19, 20 von den Stützplatten 17, 18 zu der jeweiligen Kokillenwand 5, 6 hin abstehen.The
Der Kokillenteiler 3 wird in der Kokille 1 durch Verklemmung fixiert. Seitens der ersten Kokillenwand 5 wird zur Verklemmung ein Klemmkeil 25 zwischen der ersten Kokillenwand 5 und den Stützplatten 17, 18 eingebracht und das Halteelement 10 wird durch Klemmschraubverbindungen 27 mit der ersten Kokillenwand 5 verbunden. Seitens der zweiten Kokillenwand 6 ist der Teilerblock 9 lösbar über zwei an den Stützplatten 17, 18 angeordnete Klemmkolbenaufnahmen 29 an zwei Klemmkolben 31 koppelbar. Jeder Klemmkolben 31 ist durch eine Kokillenwandöffnung 33 in der zweiten Kokillenwand 6 in eine der beiden Klemmkolbenaufnahmen 29 geführt und von einem Hydraulikzylinder 35 entlang seiner Längsachse bewegbar. In alternativen Ausführungsbeispielen der Erfindung können anstelle von Hydraulikzylindern 35 andere Antriebe der Klemmkolben 31, beispielsweise pneumatische oder elektromechanische Antriebe, verwendet werden. Ferner weist der Kokillenteiler 3 einen Klemmstab 39 auf, der durch eine Halteelementausnehmung 51 in dem Halteelement 10, Klemmkolbenausnehmungen 52 in den Klemmkolben 31 und Klemmkolbenaufnahmenausnehmungen 53 in den Klemmkolbenaufnahmen 29 geführt ist.The
Der Kokillenteiler 3 weist ferner zwei zwischen den beiden Außenoberflächen 11, 12 des Teilerblocks 9 verlaufende Kühlleitungen 41, 42 auf, wobei eine erste Kühlleitung 41 ein Kühlrohr ist, das an einer der ersten Kokillenwand 5 zugewandten ersten Wandseite 19 des Teilerblocks 9 verläuft, und die zweite Kühlleitung 42 ein Kühlrohr ist, das an einer der zweiten Kokillenwand 6 zugewandten zweiten Wandseite 20 des Teilerblocks 9 verläuft. An die Kühlrohre sind oben (nicht dargestellte) lange Schläuche oder Rohre anschraubbar, die es ermöglichen, den Kokillenteiler 3 soweit aus der Kokille 1 zu ziehen, dass er von der Kokille 1 weggeschwenkt werden kann, ohne die Kokille 1 aus der Stranggießanlage auszubauen.The
Das Halteelement 10 weist für jede Kühlleitung 41, 42 eine mit der Kühlleitung 41, 42 verbundene Verbindungsleitung 43, 44 zur Zuleitung von Kühlflüssigkeit zu der Kühlleitung 41, 42 auf.For each cooling
Ferner weist der Kokillenteiler 3 einen Strangführungsblock 45 auf, der sich an ein von dem Halteelement 10 abgewandtes zweites Ende des Teilerblocks 9 anschließt und mehrere Strangführungsrollen 47 zur Führung aus der Kokille 1 ausgegebener Gießstränge aufweist. Jede Kühlleitung 41, 42 verläuft von dem Halteelement 10 bis zu dem Strangführungsblock 45 zur Ausgabe von Kühlflüssigkeit auf den Strangführungsblock 45.Furthermore, the
Zur Zuführung von Schmiermittel für die Rollenlager der Strangführungsrollen 47 kann analog zu der Zuführung der Kühlflüssigkeit zu dem Strangführungsblock 45 wenigstens eine (nicht dargestellte) Schmiermittelleitung vorgesehen sein, die an oder im dem Teilerblock 9 von dem Halteelement 10 bis zu dem Strangführungsblock 45 verläuft.For the supply of lubricant for the roller bearings of the
Jede Kokillenwand 5, 6 ist zu beiden Seiten des Teilerblocks 9 seitens des Kokilleninnenraums 7 mit je einer Wandplatte 49 verkleidet, die sich von dem Teilerblock 9 zu einem Ende der Kokillenwand 5, 6 erstreckt.Each
In jeder Stützplatte 17, 18 und der mit der Stützplatte 17, 18 verbundenen Teilerplatte 13, 14 verläuft ein Kühlkanal 55 für Kühlflüssigkeit zur Kühlung der Teilerplatte 13, 14. Jeder Kühlkanal 55 ist mit einem in dem Halteelement 10 verlaufenden Einlasskanal 57 zur Zuführung von Kühlflüssigkeit zu dem Kühlkanal 55 und mit einem in dem Halteelement 10 verlaufenden Auslasskanal 59 zur Abführung von Kühlflüssigkeit aus dem Kühlkanal 55 verbunden. Das Halteelement 10 weist für jeden Einlasskanal 57 eine Einlassöffnung 61 und für jeden Auslasskanal 59 eine Auslassöffnung 63 auf. Die Einlassöffnungen 61 und die Auslassöffnungen 63 sind in dem in den Figuren gezeigten Ausführungsbeispiel an einer Unterseite des Halteelements 10 angeordnet (siehe
Der Kokillenteiler 3 wird von oben in die Kokille 1 eingebaut. Dabei wird der Kokillenteiler 3 zunächst ohne den Klemmstab 39 in die Kokille 1 eingeführt und an der ersten Wandseite 19 durch den Klemmkeil 25 und die Klemmschraubverbindungen 27 mit der ersten Kokillenwand 5 verklemmt. Danach wird jeder Klemmkolben 31 kontrolliert und mit reduziertem Druck zu dem Kokillenteiler 3 in eine der Klemmkolbenaufnahmen 29 verfahren. Anschließend wird der Klemmstab 39 von oben eingebaut und danach werden die Klemmkolben 31 kontrolliert mit reduziertem Druck kurz in die andere Richtung verfahren, bis der Klemmstab 39 in den Klemmkolbenausnehmungen 52 verklemmt ist.The
Zum Ausbau des Kokillenteilers 3 aus der Kokille 1 wird in umgekehrter Reihenfolge verfahren. Zunächst wird der Druck der Klemmkolben 31 auf den Klemmstab 39 durch ein kurzes Verfahren der Klemmkolben 31 gelockert, so dass der Klemmstab 39 ausgebaut werden kann. Nach dem Ausbau des Klemmstabes 39 werden die Klemmkolben 31 von dem Kokillenteiler 3 weg gefahren. Danach wird der Kokillenteiler 3 nach oben aus der Kokille 1 gehoben.To remove the
Die
Für das Stranggießen von Gießsträngen unterschiedlicher Gießstrangbreiten a in einer Kokille 1 werden vorzugsweise verschiedene Kokillenteiler 3 vorgehalten, die sich durch ihre Kokillenteilerbreiten b voneinander unterscheiden. Der jeweils eingesetzte Kokillenteiler 3 wird dabei in Abhängigkeit von der vorgesehenen Gießstrangbreite a gewählt, wie nachfolgend anhand von
Obwohl die Erfindung im Detail durch bevorzugte Ausführungsbeispiele näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen.Although the invention has been illustrated and described in more detail by means of preferred exemplary embodiments, the invention is not restricted by the disclosed examples and other variations can be derived therefrom by a person skilled in the art without departing from the scope of protection of the invention.
- 11
- KokilleMold
- 33rd
- KokillenteilerMold divider
- 5, 65, 6
- KokillenwandMold wall
- 77
- KokilleninnenraumMold interior
- 99
- TeilerblockDivider block
- 1010th
- HalteelementHolding element
- 11, 1211, 12
- AußenoberflächeOuter surface
- 13, 1413, 14
- TeilerplatteDivider plate
- 1515
- MittelabschnittMiddle section
- 17, 1817, 18
- StützplatteSupport plate
- 19, 2019, 20
- WandseiteWall side
- 2121
- Bohrungdrilling
- 23, 2423, 24
- VerbindungsnaseConnecting lug
- 2525th
- KlemmkeilWedge
- 2727
- KlemmschraubverbindungClamping screw connection
- 2929
- KlemmkolbenaufnahmeClamping piston holder
- 3131
- KlemmkolbenClamping piston
- 3333
- KokillenwandöffnungMold wall opening
- 3535
- HydraulikzylinderHydraulic cylinder
- 3939
- KlemmstabClamp bar
- 41, 4241, 42
- KühlleitungCooling pipe
- 43, 4443, 44
- VerbindungsleitungConnecting line
- 4545
- StrangführungsblockStrand guide block
- 4747
- StrangführungsrolleStrand guide roller
- 4949
- WandplatteWall plate
- 5151
- HalteelementausnehmungRetaining element recess
- 5252
- KlemmkolbenausnehmungClamping piston recess
- 5353
- KlemmkolbenaufnahmenausnehmungClamping piston receiving recess
- 5555
- KühlkanalCooling channel
- 5757
- EinlasskanalInlet duct
- 5959
- AuslasskanalExhaust duct
- 6161
- EinlassöffnungInlet opening
- 6363
- AuslassöffnungOutlet opening
- 6565
- KaltstrangCold strand
- 6666
- KaltstrangendeCold strand end
- 6767
- KaltstrangkopfCold strand head
- 6969
- KaltstrangausnehmungCold strand recess
- 7070
- KaltstranggliedCold strand link
- 71, 7271, 72
- SeitenwandSide wall
- 73, 7473, 74
- EingießpositionPouring position
- 75, 7675, 76
- VerschiebungsbereichDisplacement range
- aa
- GießstrangbreiteCast strand width
- bb
- KokillenteilerbreiteMold width
Claims (16)
- Assembly comprising a mould (1) and a mould divider (3) which is suitable for installation into the mould (1), wherein the mould (1) has two mould walls (5, 6) which are spaced apart from one another and between which a mould interior space (7) for passage of a melt extends, the mould divider (3) comprising- a divider block (9) having two outer surfaces (11, 12) for subdividing the mould interior space (7) into two sub-spaces which are separated from one another by the outer surfaces (11, 12) of the divider block (9), and- at least one cooling channel (55) for a cooling liquid for cooling at least one outer surface (11, 12), which at least one cooling channel runs in the divider block (9),
characterized by at least one clamping piston (31), which is guided into a mould wall (5, 6) through a mould wall opening (33) and is able to be moved in a hydraulically or pneumatically or electromechanically driven manner towards the divider block (9), and away from the divider block (9), along its longitudinal axis, and by way of which at least one clamping piston a clamping force is able to be exerted on the divider block (9). - Assembly according to Claim 1,
characterized in that the divider block (9) has two opposite divider plates (13, 14), which each form one of the two outer surfaces (11, 12) of the divider block (9), and a middle section (15), which is arranged between the divider plates (13, 14) and is connected to both divider plates (13, 14). - Assembly according to Claim 2,
characterized in that the middle section (15) of the divider block (9) has two support plates (17, 18) which are connected to one another, wherein a first support plate (17) is connected to a first divider plate (13), and the second support plate (18) is connected to the second divider plate (14). - Assembly according to Claim 3,
characterized in that a cooling channel (55) runs in each support plate (17, 18) and the divider plate (13, 14) connected to the support plate (17, 18). - Assembly according to one of the preceding claims,
characterized in that the mould divider (3) comprises a holding element (10) which is connected to a first end of the divider block (9) and which, after the mould divider (3) has been installed into the mould (1), bears on the two mould walls (5, 6) . - Assembly according to Claim 5,
characterized by at least one inlet channel (57), which runs in the holding element (10) and serves for feeding cooling liquid to at least one cooling channel (55), and at least one outlet channel (59), which runs in the holding element (10) and serves for discharging cooling liquid from at least one cooling channel (55). - Assembly according to Claim 5 or 6,
characterized by at least one clamping screw connection (27) for bracing the holding element (10) to a mould wall (5, 6). - Assembly according to one of the preceding claims,
characterized by a clamping part (25) for supporting the divider block (9) against a mould wall (5, 6). - Assembly according to one of the preceding claims,
characterized by a clamping bar (39) which is able to be guided through a clamping piston cutout (52) in the at least one clamping piston (31). - Assembly according to one of the preceding claims,
characterized in that the mould divider (3) has a strand-guiding block (45) which adjoins a second end of the divider block (9) and which has strand-guiding rollers (47) for guiding cast strands delivered from the mould (1). - Assembly according to Claim 10,
characterized by at least one cooling line (41, 42), which runs between the two outer surfaces (11, 12) of the divider block (9) and serves for passing a cooling liquid through to the strand-guiding block (45). - Assembly according to Claim 11 and one of Claims 5 to 7,
characterized in that, for each cooling line (41, 42), the holding element (10) has a connecting line (43, 44) which is connected to the cooling line (41, 42) and which serves for feeding cooling liquid to the cooling line (41, 42). - Assembly according to one of the preceding claims,
characterized by temperature sensors for detecting temperatures of the two outer surfaces (11, 12) of the divider block (9). - Method for simultaneous continuous casting of two cast strands in a mould (1) using an assembly designed according to one of the preceding claims, wherein, prior to starting a continuous casting process,- a dummy bar (65), which has a dummy bar head (67) with a dummy bar cutout (69) for the mould divider (3), is guided through the mould (1) from a filling spout side of the mould (1) such that the dummy bar head (67) is arranged outside the mould (1) on the discharge spout side,- after the dummy bar (65) has been guided through the mould (1), the mould divider (3) is installed into the mould (1), and,- after the mould divider (3) has been installed, the dummy bar head (67) is introduced into the mould (1) from the discharge spout side such that the mould divider (3) projects into the dummy bar cutout (69).
- Method according to Claim 14, wherein the assembly is designed according to Claim 9,
characterized in that, for the purpose of installing the mould divider (3) into the mould (1), firstly the mould divider (3) is introduced into the mould (1) from the filling spout side without the clamping bar (39), then each clamping piston (31) is moved to the divider block (9) of the mould divider (3), then the clamping bar (39) is guided through the clamping piston cutout (52) of each clamping piston (31) from the filling spout side, and then each clamping piston (31) is moved away from the divider block (9) until the clamping bar (39) is braced in the clamping piston cutout (52) of the clamping piston (31). - Method according or Claim 14 or 15,
characterized in that, prior to the guiding of the dummy bar head (67) through the mould (1), a mould divider (3) which is installed into the mould (1) is removed from the mould (1).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202016105609.8U DE202016105609U1 (en) | 2016-10-07 | 2016-10-07 | Mold divider for installation in a mold |
ATA50920/2016A AT519391B1 (en) | 2016-10-07 | 2016-10-14 | Mold divider for installation in a mold |
PCT/EP2017/073769 WO2018065216A1 (en) | 2016-10-07 | 2017-09-20 | Mold divider for installing in a mold |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3523069A1 EP3523069A1 (en) | 2019-08-14 |
EP3523069B1 true EP3523069B1 (en) | 2020-07-15 |
Family
ID=58281640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17769088.0A Active EP3523069B1 (en) | 2016-10-07 | 2017-09-20 | Mold divider for installing in a mold |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3523069B1 (en) |
AT (1) | AT519391B1 (en) |
DE (1) | DE202016105609U1 (en) |
RU (2) | RU188137U1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202016105609U1 (en) * | 2016-10-07 | 2017-02-20 | Primetals Technologies Austria GmbH | Mold divider for installation in a mold |
EP3525955B1 (en) | 2016-10-14 | 2020-07-15 | Primetals Technologies Austria GmbH | Mold having a mold divider |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3717197A (en) * | 1971-01-15 | 1973-02-20 | Mannesmann Ag | Mold for continuous casting of slab ingots |
GB1400318A (en) * | 1973-10-23 | 1975-07-16 | V Ni I Pk I Metall Mash | Continuous casting of hollow metal ingots |
JPS6254553A (en) | 1985-09-02 | 1987-03-10 | Sumitomo Heavy Ind Ltd | Twin mold for continuous casting installation |
SU1537358A1 (en) * | 1987-12-17 | 1990-01-23 | Производственное объединение "Уралмаш" | Mould for machine of continuous casting of metals |
US4942919A (en) * | 1988-02-17 | 1990-07-24 | Sms Concast, Inc. | Mold and support zone for continuous casting |
RU2048242C1 (en) * | 1991-12-27 | 1995-11-20 | Акционерное общество "Кауно кетаус леикла" | Continuous billet casting multiple-pass crystallizer |
AT400824B (en) * | 1993-12-27 | 1996-03-25 | Voest Alpine Ind Anlagen | STRONG CHOCOLATE |
DE10057250A1 (en) * | 2000-11-18 | 2002-05-23 | Sms Demag Ag | Multiple continuous caster with adjustable slide mold |
DE10116087A1 (en) * | 2001-03-30 | 2002-10-10 | Sms Demag Ag | Adjustable mold divider for installation in a conventional slab mold |
DE202016105609U1 (en) * | 2016-10-07 | 2017-02-20 | Primetals Technologies Austria GmbH | Mold divider for installation in a mold |
-
2016
- 2016-10-07 DE DE202016105609.8U patent/DE202016105609U1/en not_active Expired - Lifetime
- 2016-10-14 AT ATA50920/2016A patent/AT519391B1/en active
-
2017
- 2017-09-20 EP EP17769088.0A patent/EP3523069B1/en active Active
- 2017-10-05 RU RU2017134945U patent/RU188137U1/en not_active IP Right Cessation
- 2017-10-13 RU RU2019111019A patent/RU2754072C2/en active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
AT519391B1 (en) | 2019-08-15 |
AT519391A1 (en) | 2018-06-15 |
DE202016105609U1 (en) | 2017-02-20 |
EP3523069A1 (en) | 2019-08-14 |
RU2019111019A (en) | 2020-11-16 |
RU2019111019A3 (en) | 2021-03-23 |
RU2754072C2 (en) | 2021-08-25 |
RU188137U1 (en) | 2019-04-01 |
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