EP2919930A2 - Method to manufacture a crystallizer with plates for the continuous casting of slabs, and crystallizer thus obtained - Google Patents
Method to manufacture a crystallizer with plates for the continuous casting of slabs, and crystallizer thus obtainedInfo
- Publication number
- EP2919930A2 EP2919930A2 EP13820860.8A EP13820860A EP2919930A2 EP 2919930 A2 EP2919930 A2 EP 2919930A2 EP 13820860 A EP13820860 A EP 13820860A EP 2919930 A2 EP2919930 A2 EP 2919930A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- plates
- plate
- molding
- counter
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000009749 continuous casting Methods 0.000 title claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims description 27
- 238000011161 development Methods 0.000 claims description 18
- 238000005219 brazing Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 8
- 230000010339 dilation Effects 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 239000012809 cooling fluid Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000000110 cooling liquid Substances 0.000 description 7
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008642 heat stress Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- B22D11/057—Manufacturing or calibrating the moulds
Definitions
- the present invention concerns a method to manufacture a crystallizer with plates for the continuous casting of slabs, used in the steel industry to cast thin, medium and thick slabs with a rectangular section with the long side much bigger than the short side.
- the plates of the crystallizer are provided with a plurality of channels through which a cooling liquid is made to pass.
- the present invention also concerns the crystallizer obtained with said method.
- Crystallizers with plates made of copper alloy for continuous casting are known, in particular for casting slabs, substantially comprising two wide walls facing each other to define, together with two narrow lateral walls, a pipe with a substantially rectangular section, through which the molten metal is continuously cast.
- Each of the two wide walls comprises at least a plate, normally shaped on the internal face so as to define, in the central part and for a length which can occupy part or all the plate, a concave profile or recess.
- This recess in the upper part delimits a zone in which, during use, an unloader is able to be positioned with the function of taking the molten metal inside the crystallizer.
- the concave profile is normally made by chip-removal operations which, however, entail a series of disadvantages.
- chip-removal operations are costly in terms of time and the equipment used, entailing obvious economic disadvantages. Moreover, it may sometimes be required to use different tools depending on the working step.
- the final surface of the concave profile, obtained by chip- removal operations may have surface imperfections, in particular in the connection curves, which could influence the correct formation of the skin of the cast product, and cause possible breakages thereof, if the contact between the molten metal and the plate is not optimal during casting.
- high working costs can be caused by the initial piece to be worked, which obviously is defined by bigger sizes of the machining allowance with respect to the final product to be obtained. In other words, the discard of noble material removed during working is also a considerable cost.
- One purpose of the present invention is to perfect a method to manufacture a crystallizer with plates for the continuous casting of slabs that allows to obtain, simply and quickly, plates for the crystallizer that meet the dimensional and tolerance constraints required by the specifications, also to increase the working life of the crystallizer itself.
- Another purpose of the present invention is to perfect a method to manufacture a crystallizer for the continuous casting of slabs that provides a reduced number of steps and that allows to reduce the times and costs of manufacturing the crystallizer.
- Another purpose of the present invention is to manufacture a crystallizer for continuous casting that is economical and that has standardized and repeatable characteristics, even in the presence of particular shapes.
- Another purpose of the present invention is to reduce the costs of manufacturing the crystallizer, reducing as much as possible the volume of copper or alloys thereof used to make it.
- 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.
- a method according to the present invention which overcomes the limits of the state of the art and eliminates the defects present therein, is used to manufacture a crystallizer for the continuous casting of slabs comprising at least two wide walls, facing each other, each provided with at least one plate and defining the wide sides of the cast slab.
- the crystallizer also comprises two narrow walls, interposed at the ends of the wide walls, which define the overall width of the cast slab.
- the method comprises at least a first step of making at least one of the wide walls having, in its surface development, at least one shaped portion.
- the method comprises at least the making of a molding apparatus provided with a mold and a counter- mold in which respective shaped surfaces are made.
- the shaped surfaces together define, when the mold and the counter-mold are in the operating molding position, a molding cavity, which defines in negative the entire surface development, in shape and size, of the at least one plate of the wide walls.
- the method also comprises the molding of the plate using the mold and the counter-mold, to obtain the at least one plate directly in the finished form, without relative movements between mold and counter-mold.
- the shaped portion and the whole surface development of the at least one plate are obtained by deforming the latter plastically and rapidly obtaining the desired shaping.
- the shaped surfaces of the mold and counter-mold faithfully reproduce the final shape of the plate to be obtained, it is possible to respect the design specifications and, in particular, the dimensional and geometrical tolerances, even very strict, at least of the shaped portion.
- the shaped portion which during use will define the volume for the insertion of an unloader, is a critical zone of the whole crystallizer with regard to the phenomena of wear that can occur, and dimensional deviations of this part can considerably increase wear, reducing its working life.
- the step of making the shaped portion is simplified, with the possibility of producing different profiles of shaped portions which, on the contrary, would be very complicated, long to make and costly, if chip-removal operations were used.
- molding does not produce abrasions, scoring or other defects, and therefore the surface of the crystallizer that comes into contact with the molten metal does not need any further workings in order to be used.
- two adjacent and overlapping plates are molded simultaneously in the molding apparatus, in order to form one of the wide walls, to define an internal surface and an external surface of the wide wall.
- respective shaped surfaces are defined in the mold and the counter-mold, mating with the whole surface development of the internal surface and the external surface.
- the method also comprises the coupling of the two plates to define together at least one of the wide walls.
- the present invention also concerns a molding apparatus to make a crystallizer with plates for continuous casting, which comprises at least a mold and a counter-mold, each provided with respective shaped surfaces defining together, when the mold and the counter-mold are in the operating molding position, a molding cavity.
- the molding cavity defines in negative the whole surface development, in shape and size, of at least one plate of the wide walls.
- - fig 1. is a cross section of a first form of embodiment of a crystallizer made according to the present invention.
- - fig. 2 is a part of fig. 1 ;
- - fig. 3 is an enlarged detail of part A in fig. 2;
- - fig. 4a is a cross section of a second form of embodiment of the crystallizer in fig. l ;
- - fig. 4b is a variant of fig. 4a;
- - fig. 5 is a variant of fig. 4a;
- - fig. 6a is an enlarged detail of fig. 5, in accordance with a first variant
- - fig. 6b is a variant of fig. 6a;
- - fig. 6c is a variant of figs. 6a and 6b;
- - figs. 7 and 8 are the schematic representations of a first production step of a part of the component in figs. 2, 4 and 5;
- - fig. 9 is a schematic representation of a second production step of the component in figs. 4a, 4b and 5;
- - fig. 10 is a variant of fig. 9.
- a crystallizer with plates for the continuous casting of slabs according to the present invention is indicated in its entirety by the reference number 10.
- the crystallizer 10 comprises two shaped wide walls 11, substantially identical to each other and disposed facing and distanced from each other by two narrow walls 12.
- the wide walls 11, shaped in their central part, define along a longitudinal axis Z, a central cavity, or recess, 13, which extends from an entrance section to an exit section of the crystallizer 10.
- a central cavity, or recess, 13 which extends from an entrance section to an exit section of the crystallizer 10.
- an unloader is able to be inserted, not shown in the drawings, with the function of taking the molten metal into the crystallizer 10.
- the two narrow walls 12 are selectively adjustable, in a known manner, to define the distance between the wide walls 1 1 and hence the width of the slab exiting from the crystallizer 10.
- each wide wall 1 1 comprises a first plate 14 and a second plate 15, adjacent to each other, that is, overlapping and in contact with each other.
- the first plate 14 comprises a first internal surface 16 in contact during use with the molten metal, and a first external surface 17 disposed in contact with the second plate 15.
- the second plate 15 comprises a second internal surface 18, cooperating with the first external surface 17 of the first plate 14, and a second external surface 19, in this case planar.
- the first plate 14 and the second plate 15 are shaped in their central part, as is known, so as to define a concave portion 20, or shaped portion, able to allow the positioning of the unloader.
- the concave portion 20 extends longitudinally for the whole height of the crystallizer 10 and has a longitudinal inclination that diminishes until it is canceled or, in some cases, until it is almost canceled, in correspondence with the exit section.
- the part of the unloader positioned between the two wide walls 1 1 is substantially oval in shape, and is positioned at the center of the central cavity 13 and coaxially to the longitudinal axis Z.
- the unloader is therefore partly surrounded by the concave portion 20 of the first plates 14.
- the first plate 14 in this case is made of an alloy of copper and silver, or an alloy of copper, chromium and zirconium.
- the second plate 15 instead is made of steel.
- first plate 14 and the second plate 15 are joined to each other mechanically by threaded connection means, in this case first screws 24 (fig. 3) inserted inside through clamping holes 25 and blind clamping holes 26, made respectively in the second plate 15 and the first plate 14. More specifically, into the blind clamping holes 26 threaded bushings 37 are screwed, into which in turn the first screws 24 are screwed.
- This form of embodiment is particularly advantageous because, if the first plate 14 has to be replaced, for example for maintenance operations or due to heavy wear, the second plate 15 can be re-used.
- the first plate 14 and the second plate 15 are reciprocally connected by means of a connection material 34 disposed between the first external surface 17 of the first plate 14 and the second internal surface 18 of the second plate 15, to define the intimate and permanent coupling of the first plate 14 and the second plate 15.
- connection material 34 consists of a brazing material.
- the brazing material can be chosen from a group comprising alloys based on tin, lead, copper, silver, zinc or combinations thereof.
- connection between the first plate 14 and the second plate 15 is obtained by gluing operations, or using a gluing material.
- connection material 34 is a gluing material chosen from a group comprising at least epoxy resins, chinoacrylates or similar or comparable glues, suitable for the particular use.
- At least one of either the first external surface 17 of the first plate 14 or the second internal surface 18 of the second plate 15 are provided with a plurality of longitudinal grooves 21, made open toward the outside and closed by the second plate 15 or respectively by the first plate 14 to define channels 22 for the passage of a cooling liquid.
- the channels 22 in turn are reciprocally connected to each other to define a cooling circuit inside which the cooling liquid or fluid is able to pass, in order to cool the first and second plates 14 and 15 and the molten metal.
- the channels 22 are configured to resist pressure stresses exerted by the cooling liquid, normally in the range of about 20 bar.
- the cooling liquid allows to obtain a uniform cooling of the whole cross section of the crystallizer 10.
- the first internal surface 16 of the first plate 14 is kept at a temperature of about 350°C
- the surface of the channels 22 disposed nearest the first internal surface 16 is kept at a temperature of about 160°C
- the interface zone between the first plate 14 and the second plate 15 is kept at a temperature of about 60°C
- the second external surface 19 of the second plate 15 is kept at a temperature of about 30°C.
- the interface zone between first plate 14 and the second plate 15, that is, the zone where there is the connection material 34 is at a relatively low temperature, so as to advantageously preserve the sealing and connecting capacities of the connection material 34 from heat stresses.
- the longitudinal grooves 21 are made in the first external surface 17 of the first plate 14 which are closed by the second plate 15 to define the channels 22.
- the longitudinal grooves 21 are made in the second internal surface 18 of the second plate 15. In this case, the longitudinal grooves 21 are closed by the first plate 14.
- channels 22 that are rectangular in shape, these have a width comprised between 5 mm and 12 mm and a depth comprised between 10 mm and 15 mm.
- the first plate 14 has a constant thickness along its extension in width, while the second plate 15 has a variable thickness, reduced in correspondence to the central cavity 13.
- both the first plate 14 and the second plate 15 have a uniform thickness along their extension in width.
- the second external surface 19 of the second plate 15 also has a curved profile to follow the concave portion 20.
- the plate in which the longitudinal grooves 21 are made has a thickness comprised between 20 mm and 40 mm while the plate without longitudinal grooves has a thickness comprised between 10 mm and 20 mm.
- the second plate 15 and the first plate 14 have maximum thickness to allow to obtain the longitudinal grooves 21.
- the wide wall 11 can be associated by means of second screws 33 to a steel frame 27 (figs. 5, 6a, 6b and 6c) which defines a water box for the cooling circuit comprising said channels 22.
- drainage channels 36 can be made in the second plate 15 and through the frame 27.
- the drainage channels 36 allow to discharge possible small losses of the cooling fluid circulating in the channels 22 which, due to the high pressure, could leak from the channels 22 through the surfaces 17 and 18 of the first and second plates 14, 15 in contact with each other.
- Some forms of embodiment provide that on at least one of either the first plate 14 or the second plate 15 a plurality of notches 23 are made, configured to compensate the heat dilations to which they are subjected during casting.
- the second plate 15 comprises a plurality of longitudinal notches 23 able to compensate the heat dilations to which the second plate 15 is subjected during casting, also because of the different material that the first and second plates 14 and 15 are made of.
- the longitudinal notches 23 can be made on the second external surface 19 (fig. 6a) or, according to a variant, on the second internal surface 18 (fig. 6b).
- the crystallizer 10 is provided not only with the longitudinal notches 23, but also with transverse notches 35 (fig. 6a), that is, notches that extend transversely with respect to the longitudinal axis Z, and having the same function as the longitudinal notches 23.
- the interaction between the longitudinal 23 and transverse notches 35 allows to adapt to the heat dilations that the crystallizer 10 is subjected to during use, and to reduce the internal tensions thereof.
- the longitudinal notches 23 and the transverse notches 35 allow to adapt respectively to the transverse and longitudinal dilations to which the crystallizer 10 is subjected.
- the longitudinal 23 and transverse 35 notches in this case have a rectangular section shape, although in other forms of embodiment they can have different shapes, with the shorter side having a width of about 4-5 mm.
- the transverse notches 35 are made only in the zone which during use is disposed in proximity with the level of the molten metal in the crystallizer 10, or meniscus, where the heat stresses are greatest.
- the longitudinal 23 and transverse notches 35 are made for example by milling operations.
- each wide wall 11 can consist of a single plate of copper alloy.
- the channels 22 are made longitudinally to the thickness of the plate.
- seatings 40 are made on the second plate 15, in this case with a rectangular section, inside each of which a sealing packing 41 is disposed to ensure the watertight seal between the first plate 14 and second plate 15 of the wide wall 1 1.
- the method to manufacture the crystallizer 10 as described heretofore comprises at least a first step in which at least the first plate 14, consisting for example of a rolled metal sheet with a good surface finish, is subjected to a molding operation using a mold 28 and a counter-mold 29 of a molding apparatus 30 (figs. 7 and 8).
- the molding apparatus 30 can be used for the simultaneous molding of the first plate 14 and the second plate 15 as will be described hereafter.
- the mold 28 is provided with a shaped surface 42 which is shaped mating with the whole surface development of the first internal surface 16 of the first plate 14.
- the counter-mold 29 is in turn provided with a shaped surface 43 which is shaped mating with the whole surface development of the first external surface 17 of the first plate 14, or if the first plate 14 and the second plate 15 are molded together, mating with the whole surface development of the peripheral second external surface 19.
- the molding cavity 44 defines in negative the whole surface development, in shape and size, of the wide wall 11 in its definitive form.
- the concave portion 20 is advantageously made in its finished form, that is, with a single operation and without needing to subject the first internal surface 16 and the first external surface 17 to further workings.
- first plate 14 and a second plate 15 are obtained which respect the required design specifications and, in particular, it is possible to respect the dimensional and geometrical tolerances required for the particular application.
- the second plate 15 too (figs. 4a, 4b, 5, 6a, 6b, 6c) is shaped by molding in a dedicated mold and counter-mold like the first plate 14.
- both the first plate 14 and the second plate 15 are shaped by molding, independent molding operations are provided on the first plate 14 and the second plate 15, each on its own dedicated mold and counter-mold.
- Other forms of embodiment on the contrary provide to simultaneously carry out the molding operations on the first 14 and second plate 15, disposing them simultaneously, adjacent and overlapping each other, between the mold 28 and counter-mold 29.
- the second plate 15 is obtained by working on machine tools, since the subsequent re-use of the second plate 15, following the replacement of the first plate 14, allows to write off the production cost.
- connection material 34 to connect the first plate 14 with the second plate 15, on the contrary the second plate 15 is also obtained by molding. In this way it is possible to shape the first external surface 17 of the first plate 14 mating with the second internal surface 18 of the second plate 15 to allow them to be correctly overlapped and subsequently joined together.
- Some forms of embodiment provide that the molding operations are performed cold.
- the molding is performed hot.
- the method also comprises making the longitudinal grooves 21 on the first plate 14 or on the second plate 15 or on both.
- the longitudinal grooves 21 are made by chip-removal operations, for example using a multi-tooth miller to reduce the operating times.
- the longitudinal grooves 21 are made by milling with a numerical control, so as to obtain high precision.
- the longitudinal grooves 21 can be made before or after the molding operations.
- the method then comprises a step of connecting the first plate 14 to the second plate 15 so as to define, when they are connected, the wide wall 11 and the cooling channels 22.
- the connection can be obtained using at least two alternatives.
- the first alternative provides a mechanical union of the first and second plates 14 and 15, that is, inserting the first screws 24 inside the through clamping holes 25 and the corresponding blind clamping holes 26.
- this step also provides to join the frame 27 to the wide wall 11, using second screws 33.
- the second alternative provides to join the first plate 14 and the second plate 15 using a connection material 34.
- the first external surface 17 and the second internal surface 18 are covered in a known manner, for example by spraying or spreading said connection material 34.
- connection material 34 is a brazing material, it is necessary to proceed with the simultaneous heating of the first plate 14 and the second plate 15 in order to obtain their intimate and permanent coupling.
- the second plate 15 are aligned and overlapped, and are inserted between the same mold 28 and counter-mold 29 used for the molding operations.
- the latter are provided with a plurality of heating elements, such as for example resistances 31, shown schematically in figs. 9 and 10, which heat the first plate
- the mold 28 and counter-mold 29 used for brazing can be different from those used for the molding operations.
- first molding portions 32a are provided, disposed centrally and suitable to define with their action the concave portion 20 of the first and second plates 14 and 15, and second molding portions 32b, which are associated laterally to the first molding portions 32a to define overall the mold 28 and counter-mold 29.
- first molding portions 32a of the mold 28 and counter-mold 29 have their respective shaped surfaces 42 and 43 which are shaped mating with the whole surface development of the concave portion 20 of the first and second plates 14 and 15.
- the sizes of the mold 28 and counter-mold 29 can be modified in width, selectively adding and/or removing second molding portions 32b depending on the width of the first and second plates 14 and 15 to be made and/or joined (fig. 10).
- the first molding portions 32a remain substantially the same, even if erystallizers are made that have different widths of the first and second plates 14 and 15.
- Subsequent steps provide possible workings such as, for example, making notches, holes, seatings for keys and/or tongues.
- the molding operation to which at least the first plate 14 is subjected to obtain the first internal surface 16 determines various construction advantages including, mainly, a reduction in the manufacturing times, given that the molding operation is instantaneous compared with chip- removal operations.
- a first internal surface 16 is obtained having a surface quality that is in any case adequate because it is made for example from rolled sheet and suitable to generate a good surface quality of the slab exiting.
- the narrow walls 12 of the crystallizer 10 can also be made in the same way as described with reference to the wide walls 1 1.
- the narrow walls 12 comprise an internal plate 38 and an external plate 39, reciprocally connected with each other in one of the ways described above for the first plate 14 and the second plate 15.
- the narrow walls can also be provided with longitudinal and/or transverse notches to allow to compensate for dilations of the material.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Moulding By Coating Moulds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000194A ITUD20120194A1 (en) | 2012-11-16 | 2012-11-16 | METHOD FOR THE REALIZATION OF A PLASTIC CRYSTALLIZER FOR CONTINUOUS BRAMME CASTING, AND CRYSTALLIZER SO IT HAS OBTAINED |
PCT/IB2013/002561 WO2014076553A2 (en) | 2012-11-16 | 2013-11-15 | Method to manufacture a crystallizer with plates for the continuous casting of slabs, and crystallizer thus obtained |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2919930A2 true EP2919930A2 (en) | 2015-09-23 |
EP2919930B1 EP2919930B1 (en) | 2018-09-26 |
Family
ID=47522862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13820860.8A Active EP2919930B1 (en) | 2012-11-16 | 2013-11-15 | Method to manufacture a crystallizer with plates for the continuous casting of slabs, and crystallizer thus obtained |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2919930B1 (en) |
KR (2) | KR101862707B1 (en) |
CN (1) | CN104968453B (en) |
IT (1) | ITUD20120194A1 (en) |
WO (1) | WO2014076553A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109332611A (en) * | 2018-11-21 | 2019-02-15 | 南阳汉冶特钢有限公司 | A kind of water-cooled steel ingot mould |
CN115815545A (en) * | 2022-10-27 | 2023-03-21 | 东北大学 | Convex cambered surface continuous casting crystallizer narrow-surface copper plate and using method thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4233522A1 (en) * | 1992-04-04 | 1993-10-07 | Schloemann Siemag Ag | Process for producing a wide mold side wall for a thin slab caster |
DE69518359T2 (en) * | 1994-06-06 | 2000-12-21 | Danieli Off Mecc | Method for controlling the deformation of the side walls of a mold and continuous casting mold |
CN1056106C (en) * | 1995-06-19 | 2000-09-06 | 冶金工业部钢铁研究总院 | Mould for continuous casting thin sheet bloom |
DE19927348A1 (en) * | 1999-06-16 | 2000-12-21 | Sms Demag Ag | Method for producing forged broad side walls of a continuous casting mold |
CN2885458Y (en) * | 2006-03-17 | 2007-04-04 | 钢铁研究总院 | Crystallizer copper plate for sheet blank continuous casting |
DE102006033316A1 (en) * | 2006-07-17 | 2008-01-24 | Kme Germany Ag | Making continuous casting mold, bends copper plate of given wall thickness to required geometry, whilst maintaining wall thickness |
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2012
- 2012-11-16 IT IT000194A patent/ITUD20120194A1/en unknown
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2013
- 2013-11-15 EP EP13820860.8A patent/EP2919930B1/en active Active
- 2013-11-15 KR KR1020177017077A patent/KR101862707B1/en active IP Right Grant
- 2013-11-15 CN CN201380070707.3A patent/CN104968453B/en active Active
- 2013-11-15 WO PCT/IB2013/002561 patent/WO2014076553A2/en active Application Filing
- 2013-11-15 KR KR1020157015856A patent/KR20150085051A/en active Application Filing
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Also Published As
Publication number | Publication date |
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CN104968453B (en) | 2017-08-29 |
WO2014076553A3 (en) | 2014-07-24 |
CN104968453A (en) | 2015-10-07 |
KR20150085051A (en) | 2015-07-22 |
EP2919930B1 (en) | 2018-09-26 |
KR20170076789A (en) | 2017-07-04 |
KR101862707B1 (en) | 2018-07-04 |
WO2014076553A2 (en) | 2014-05-22 |
ITUD20120194A1 (en) | 2014-05-17 |
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