US20150290703A1 - Stirring-roll for a continuous cast machine of metallic products of large cross section - Google Patents

Stirring-roll for a continuous cast machine of metallic products of large cross section Download PDF

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Publication number
US20150290703A1
US20150290703A1 US14/379,918 US201214379918A US2015290703A1 US 20150290703 A1 US20150290703 A1 US 20150290703A1 US 201214379918 A US201214379918 A US 201214379918A US 2015290703 A1 US2015290703 A1 US 2015290703A1
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United States
Prior art keywords
inductor
tubular body
stirring
stirring roll
shell ring
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Abandoned
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US14/379,918
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English (en)
Inventor
Siebo Kunstreich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rotelec SA
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Rotelec SA
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Publication date
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Assigned to ROTELEC reassignment ROTELEC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUNSTREICH, SIEBO
Publication of US20150290703A1 publication Critical patent/US20150290703A1/en
Abandoned legal-status Critical Current

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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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ

Definitions

  • the present invention relates to electromagnetic equipment with a sliding magnetic field for setting in motion the still molten liquid metal within a large cross sectional metallic product, such as a steel slab, during its solidification, downstream of the ingot mold, in the secondary cooling zone of the continuous casting unit that produces the slab.
  • the invention concerns the manufacture of this type of equipment, usually called “stirring roll” when it is connected with a supporting and guide roll for the cast slab, and made tubular for this purpose.
  • the electromagnetic part of this type of equipment traditionally comprises a polyphase linear inductor that generates a movable magnetic field directed perpendicularly to the surface of the shell of the roll that surrounds it and which slides along the rotational axis of said roll.
  • the second period is that of the document FR 75/05623 published in August 1976 which states the basic technological concept of the stirring roller with a turning inductor; the concept is based on a tubular body and mechanical linking elements that ensure the support of the tubular body while allowing it a free axial rotation.
  • These elements are schematically constituted by a unit, formed, on each side of the tubular body, by a tubular spindle in the shape of a truncated cone, mounted at the end of the tubular body, and by a rolling bearing mounted on a supporting element located beyond the limits of the tubular body and fixed to the rigid frame of the caster, the small base of the spindle coming to turn in said bearing.
  • the central inductor is maintained and centered in an internal space of the large base of each spindle. At least one of the spindles (detachable to allow the inductor to be mounted in the tubular body) extends past its support bearing to allow the inductor to be electrically connected up to a polyphasic external supply.
  • the third period is that of the document EP-A-0 043 315 published in January 1982.
  • This document discloses in detail the successful operational achievement of the stirring roll, this time with a fixed inductor, which is still used today: again there is the same general structure as that of the turning inductor, except that the central inductor in this case is held by its own internal core, on which are wound the electric phase windings.
  • this core forms an axial shaft, whose ends of narrowed diameter pass by the small bases of the spindles of the tubular body to engage with the roller bearings supporting the tubular body and fixed to the rigid frame of the caster machine by means of a flange lock mounted on the external side of these bearings and which blocks the inductor against axial rotation.
  • this flange constitutes the floor of a sealed water box equipped with water inlets/outlets for cooling the tubular body and the inductor by circulation in the calibrated annular space that separates the inductor from the tubular body.
  • the water box also acts as an electrical connection panel and on the outside possesses electric terminals that connect the inductor to the external electricity supply.
  • such a technology for a stirring roller of the prior art is essentially characterized overall by the cooperation of two distinct coaxial sub-assemblies, one free to rotate axially, the other fixed, and both being carried by the supports 4 of the tubular body 7 which are fixed to the rigid frame 5 of the casting machine:
  • the water boxes 16 also acting as an electrical connection panel 18 for the inductor, externally cover and seal the cradles 14 .
  • This type of stirring roll which has proved to be perfectly adapted to its dual function, support-stirring, is commonly used in the majority of machines for the continuous casting of slabs of standard width, i.e. up to about 1600-1700 mm, the width at which the tubular body supported by two end bearings is still sufficiently rigid so as not to sag unacceptably.
  • This type of stirring roll could also be used for very wide slabs, namely with a width of more than 2400 mm, by means of installing two half-rollers with an intermediate roller bearing in order to ensure the rigidity and geometric straightness of such an assembly under the thermo mechanical stresses imposed by the presence at its contact of a very wide slab that is solidifying (WO2011/117479).
  • this technology proves to be inapplicable for slabs of intermediate width, for example from 2000 mm to ⁇ 20% (therefore from 1600 to 2400 mm to be precise).
  • the presence of the end spindles makes the active part of the inductor too short for considering the solution with two half-rollers with an intermediate bearing, and the solution with a single roller without an intermediate bearing would certainly lead to an inacceptable sag, especially as the presence of the end spindles separates the points of support on the rigid frame of the casting machine far beyond the simple distance needed for covering the whole width of the slab.
  • a stirring roll of 240 mm diameter mounted at a distance of approximately 3 m below the level of the metal cast into an ingot mold in a “standard” casting machine with a width of 1600 mm, sags less than 1 mm under the ferrostatic pressure of the slab, whereas in a machine with a width of 2000 mm the sag would be about 4 mm, which is inacceptable.
  • the object of the present invention is to propose a technological concept for them without end spindles in order to rigidify the tubular body, to permit a more economical production both in acquisition and running costs and in addition to be able to fulfil all requirements in terms of width of the slabs from 1600 mm (or less) to 2400 mm (at most).
  • the subject matter of the invention is a stirring roll for a continuous casting machine of metallic products having a broad cross section, such as a slab, comprising:
  • the invention is based on the idea of making the inductor act as the support for the tubular body that turns around it in close proximity.
  • the roller bearings of the tubular body or more generally its mechanical connecting elements that leave it free for axial rotation, are separated from their traditional supporting elements integral with the structure of the casting machine.
  • the terminal extensions of the inductor are exclusively received by the supporting elements, while the roller bearings required to support the tubular body and allowing it free for axial rotation, therefore become simple bearings mounted on these terminal extensions of the inductor.
  • the technological concept according to the invention moreover opens particularly attractive possibilities for a simplified embodiment of extra-long stirring rolls, intended, as already emphasized, for machines for casting wide slabs (more than 1600 mm), whose trend is increasingly confirmed in the worldwide steel industry driven by ever increasing productivity requirements of steel works.
  • such an extra-long stirring roll comprises not one but two separate aligned tubular bodies. These two tubular bodies preferably have the same length, and are equipped with two additional intermediate bearings that bear on a central intermediate extension of the axial core of the inductor. This intermediate extension is itself supported by a supplementary central support fixed to the rigid frame of the casting machine.
  • split stirring roll is operational in nature: in the case of very wide slabs, for example greater than 2000 mm, two inductors that are electrically and magnetically independent of one another can be mounted on the same axial frame for the inductors within the same stirring roll, while at the same time adapting a central support fixed to the rigid frame of the caster.
  • the stirring roll according to the invention compared with traditional stirring rolls of the prior art, is characterized by the fact that the end rolling bearings and the spindles are eliminated and replaced by simple supports for a fixed, non-turning shaft represented by the terminal extensions of the inductor and that the tubular body turns around said fixed shaft by bearing on the latter by means of the bearings that hold it.
  • the strain imparted by the tubular body on its connecting elements is no longer transmitted by the necessarily tubular and thus deformable spindles, but is applied directly to a central shaft that can be dimensioned as needed to avoid any deformation. Furthermore, transposed to the intermediate bearings in the version of the split stirring roll, this arrangement ensures a minimum space between the two tubular bodies, and consequently a maximized continuity of support for the slab across its width.
  • FIG. 1 is a didactic representation, according to an axial section, of a voluntarily hybrid stirring roll for the purpose of comparison with the prior art, in the sense that the left extremity (in the figure) is realized with the technology according to the invention, whereas the right extremity is shown in the usual form of the prior art;
  • FIG. 2 is an axial section of a stirring roll in its basic version with a single tubular body (thus without central support);
  • FIG. 3 is an axial section of a variant with two tubular bodies and central support, named “split stirring roll”.
  • a classic stirring roll is essentially formed by an extended tubular body that turns about its principal axis of symmetry A-A.
  • This body consists of an envelope or tubular body 1 , made of non-magnetic stainless steel and by frustoconical spindles 2 that maintain said tubular body at both of its ends, the small base 2 a of each spindle being engaged in a rolling bearing 3 incorporated into a support 4 fixed to the rigid frame 5 of the continuous casting machine.
  • This casting machine can cast the metallic slabs 6 that progress from an ingot in the top down to a lengthwise cutting tool at the bottom of the machine.
  • the molten metal progressively solidifies under the effect of an intense cooling of its surface by contact with the internal walls of the ingot mold, then by direct application of water in the secondary cooling stages of the casting machine, exactly there, where the stirring rolls that equip the machines are located.
  • the available volume inside the tubular body 1 is almost totally occupied by an electromagnetic inductor 8 intended to allow the still molten metal to be set in motion in a controlled manner within the slab 6 .
  • the inductor 8 of the polyphasic linear type comprises a magnetic shell 9 that serves as a winding support for the phase windings 10 that follow one another along the inductor so as to be able to generate a magnetic field that is directed on the whole perpendicularly to the wide faces of the slab 6 , but mobile, i.e. sliding along the axis A-A of the inductor when said windings 10 are correctly connected to the terminals of an external polyphasic (biphasic or triphasic) power source (not shown).
  • an external polyphasic (biphasic or triphasic) power source not shown.
  • This inductor 8 is also an axially symmetrical body on its longitudinal axis which merges with the axis A-A of the tubular body 1 in order to be able to be well centered on the latter while leaving an annular space 11 between them for the circulation of a cooling fluid that will ensure the thermal maintenance of the stirring roll when in operation.
  • This axial centering is achieved with the help of cylindrical terminal extensions 12 of the inductor of reduced diameter so as to be able to engage with a slight clearance in the small base 2 a of the spindle 2 and to exceed the confines of the spindle past the bearing 3 by a projection 13 that serves as a key to block the inductor against axial rotation at the level of an end plate 14 equipped with the necessary cotter pins.
  • Each terminal extension 12 which is hollow (axial channel 24 ) is provided with radial ducts 15 communicating with the annular space 11 , emerges in a water box 16 mounted in a water-tight manner at the extremity on the end plate 14 and provided with an inlet or outlet pipe 17 for the cooling water (shown as an outlet in the figure).
  • the water box 16 also serves as a panel with terminals 18 for connecting the inductor 8 to an external polyphasic electricity supply, the connecting wires 19 of the inductor passing in the axial hollow of its extension 12 to reach the terminals 18 .
  • the stirring roll according to the invention differs from the classical technology of the prior art in that the rolling bearing 3 as well as the spindle on each end of the roll have been eliminated.
  • This singularity frees up space for the terminal extension 20 of the inductor 8 that then, blocked from rotation by a wedge 31 , comes to rest in the cradle formed by this fixed support 4 .
  • this extension 20 is planned to be more massive with a greater diameter than that of the analogous extension 12 of the classical stirring roll (right hand part of the figure); this is in order to reinforce as needed its mechanical strength, because greater demands will be placed on it at this point, as will be understood from the following.
  • the bearings 3 replace by themselves the end spindles of the tubular body 1 (which are therefore eliminated) in their retention and driving force functions when the body rotates, and, secondly, these bearings 3 come to bear directly on the terminal extension 20 of the inductor that accordingly serves to support the tubular body 1 .
  • the distance between the fixed supports 4 is consequently reduced by 25 to 40 cm, depending on the case, with respect to the technology of the prior art, i.e. nearly 20% of the length of the stirring roll.
  • a bearing 3 will therefore be fixed to each end of the tubular body. This fixing can be achieved, in a manner known per se, by means of a bolted ring (not shown in the figures so as not to needlessly clutter them). Similarly, it will be advantageous to provide an annular flange 32 mounted on the end of the tubular body to act as a lubrication plate for the bearings 3 and which comes to cover said bearings to protect them from dust and to improve the water-tightness of the assembly.
  • FIG. 3 illustrates the technological variant of the invention applied in the case where the stirring roll no longer has a single tubular body that extends over the whole width of the cast slab, but has two half-tubular bodies 1 a and 1 b.
  • a stirring roll of this type is an adequate response to the growing demand—at least in the steel industry—to be able to continuously cast slabs of greater width, easily exceeding the limits of conventional stirring rolls of 1.6-1.7 m, even 2.4 m width and still more in a not too distant future, because this split roll is protected against unacceptable sagging by the central support 21 .
  • the terminal extensions of the inductor 20 a or 20 b, located at the ends of the roll, are hollow so as to be able to emerge,
  • the intermediate extension 20 c is also hollow and provided with radially drilled ducts 15 c, 15 d so as to form a water-tight central duct communicating between the annular spaces 11 a and 11 b.
  • a common water circuit comprising the following elements, taken in the order corresponding to the direction of flow of the cooling liquid, from left to right in FIG. 3 :
  • the intermediate extension 20 c of the inductor implies of course that the electric windings 10 be well away from this spot, but the mechanical continuity between the left and right part of the inductor is ensured by this extension that can be in steel or in the same material as the axial frame of the inductor.
  • said split stirring roll can comprise two separate and distinct electromagnetic inductors, one in each half tubular body: an inductor 8 a in the left half tubular body 1 a and an inductor 8 b in the right half tubular body 1 b.
  • the inductors 8 a and 8 b are represented here as being identical to one another and similar to the single inductor 8 of FIG. 1 or 2 .
  • inductors 8 a and 8 b can be firmly connected mechanically by the intermediate extension 20 c, or detachable so as to facilitate the installation, but are reunited through the central support 21 . As is shown in the figure, a simple interlock of the “male-female” kind in this respect would be sufficient to ensure the mechanical connection of the two inductors.
  • each inductor comprises its own central support on its inner end
  • two central supports would be juxtaposed, one beside the other, each carried by the rigid frame of the casting machine.
  • a junction would be needed, even a flexible one but water-tight, between these two linked inductors so as to allow the cooling water to circulate.
  • Another aspect that could be disadvantageous for this variant is that the distance between the two half tubular bodies would be correspondingly greater and hence also the fraction of the width of the cast slab 6 left free of any mechanical support and uncooled in a dead zone at the level of the intermediate bearings.
  • the resulting unwanted effects on the slab could be alleviated by providing sets of half tubular bodies of variable but different lengths on the same roll.
  • the dead zones would be shifted over the width of the cast slab from one roll to another on the height of the casting machine, with the aim of homogenizing by and large the perturbation after the slab has progressed some meters in the casting direction.
  • the inductors 8 a and 8 b are of the linear polyphase type (triphasic or more usually biphasic), each requiring as many pairs of terminal connection as there are phases of its electricity supply: two pairs for a biphase type, three pairs for a triphase type (nevertheless with the remark that in the case of an electric installation of the inductor “without neutral output”, its number of terminals will be three for a biphase type and three for a triphase type).
  • This type of inductor produces a magnetic field, whose lines of force are on the whole oriented perpendicular to the longitudinal axis A-A of the inductor, and mobile, because the field can be made to slide along this axis in one direction or the other by simply reversing the phase of the electricity supply. Consequently, if two electricity supplies are available, or what amounts to the same thing, a duplicate supply, then the sliding fields can be adjusted on the two inductors 8 a and 8 b of a same stirring roll independently of one another, thereby opening particularly interesting opportunities in regard to the possibilities for setting in motion the molten metal within the slab during the casting process.
  • each inductor must have the complete set of windings in order to generate a sliding magnetic field (minimum four for biphasic inductors and six for triphasic inductors), whereas the single inductor distributes its set of windings between the left and right part; this can for example allow the number of pairs of poles per phase to be increased.
  • connections of the windings of an inductor to the phases of the electricity supply will all be guided, preferably, toward the same electrical connection panel located at one end of the roll and the connections of the other inductor will all be guided toward the other connection panel installed at the other end of the roll (here the connections 18 a toward the nearest panel 19 a and the connections 18 b toward the panel 19 b ), whereas with a single inductor, half of the connections can be grouped together on the left and the other half on the right.
  • the stirring rolls according to the invention in their embodiment without a central support 21 , can be integrated without any particular difficulty to a segment of the structure of the casting machine equipped with other customary support rolls and guide rolls for the slab. This is also true for the split stirring rolls according to the invention, because the customary support rolls are likewise equipped with intermediate bearings or with intermediate supports in the case of wide machines and the structure of the segments is already designed with central supports.
  • split stirring rolls with two distinct inductors, each with a tubular body of about 1000 mm in length, with a central support of about 10 mm width.
  • the diameter of the half tubular bodies can be about 240 mm or more.
  • the lengths of the two half tubular bodies can be unequal.
  • that the cast slab is not guided on the width of the central support means that the part of the slab passing next to this “hole” can swell up.
  • planning for split stirring rolls having contiguous half tubular bodies of unequal length by therefore shifting their central support such that it is placed between two successive split stirring rolls, will ensure that it will not always be the same part of the width of the slab that will swell up. Accordingly, this will avoid as needed any flaws in the slab, such as cracks and porosities, caused by the swelling.
  • the bearings of the tubular body may be exposed to the heat of the slab to a much greater extent during casting than in the technology of the prior art of stirring rolls with supporting spindles that are offset on both sides of the tubular body.
  • it can consequently be advantageous to select helicoidal thermal deformation bearings for the tubular bodies.
  • This type of mechanical bearing is commercially available.
  • spindle used to designate the supporting elements mounted at the ends of the or the two tubular bodies that are constituents of a split stirring roll, encompasses all transmission organs that are capable of ensuring a water-tight, rigid connection between the tubular bodies and the roller bearings that carry them in free axial rotation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
US14/379,918 2012-03-27 2012-03-27 Stirring-roll for a continuous cast machine of metallic products of large cross section Abandoned US20150290703A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/001330 WO2013143557A1 (fr) 2012-03-27 2012-03-27 Rouleau brasseur pour machine de coulée continue de produits métalliques à large section droite

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US20150290703A1 true US20150290703A1 (en) 2015-10-15

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US14/379,918 Abandoned US20150290703A1 (en) 2012-03-27 2012-03-27 Stirring-roll for a continuous cast machine of metallic products of large cross section

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US (1) US20150290703A1 (de)
EP (1) EP2830794B1 (de)
JP (1) JP5874945B2 (de)
KR (1) KR101728444B1 (de)
CN (1) CN104159686B (de)
BR (1) BR112014019299B1 (de)
RU (1) RU2600776C2 (de)
WO (1) WO2013143557A1 (de)

Cited By (8)

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WO2017117465A1 (en) * 2015-12-29 2017-07-06 Extreme Caster Services, Inc. Improved roll for high temperature environments
IT201800006635A1 (it) * 2018-06-25 2019-12-25 Metodo di contenimento di una bramma durante la colata
EP3766599A1 (de) 2019-07-17 2021-01-20 Primetals Technologies Austria GmbH Elektromagnetische spulenanordnung und elektromagnetische rührrolle für eine stranggussanlage
EP3766600A1 (de) 2019-07-17 2021-01-20 Primetals Technologies Austria GmbH Elektromagnetische spulenanordnung und elektromagnetische rührrolle für eine stranggussanlage
CN112548053A (zh) * 2020-11-23 2021-03-26 湖南中科电气股份有限公司 连铸板坯二冷区非对称分节辊式电磁搅拌装置
EP3871803A1 (de) 2019-07-17 2021-09-01 Primetals Technologies Austria GmbH Elektromagnetische spulenanordnung und elektromagnetische rührrolle für eine stranggussanlage
US11110511B2 (en) * 2018-03-22 2021-09-07 Roser Technologies, Inc. Continuous caster roll having a spiral fluted axle
AT523307A3 (de) * 2020-01-01 2023-07-15 Skf Ab Rollenlinieneinheit & Stranggießanlage

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CN110227805B (zh) * 2019-06-28 2024-03-08 湖南科美达电气股份有限公司 一种电磁搅拌辊

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US3882923A (en) * 1972-06-08 1975-05-13 Siderurgie Fse Inst Rech Apparatus for magnetic stirring of continuous castings
FR2237711A1 (en) * 1973-07-20 1975-02-14 Cem Comp Electro Mec Stirring molten cores of slabs in continuous casting - using induction coils housed in guide and support rolls
US4351383A (en) * 1980-04-10 1982-09-28 Gladwin Corporation Bearings for continuous casting roller aprons
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JPS57199556A (en) * 1981-06-02 1982-12-07 Kubota Ltd Non-magnetic roll for continuous casting
US4676297A (en) * 1984-11-29 1987-06-30 Voest-Alpine Strand guide arrangement to be used in a continuous casting plant
SU1671402A1 (ru) * 1989-07-06 1991-08-23 Ленинградское Производственное Электромашиностроительное Объединение "Электросила" Им.С.М.Кирова Устройство дл электромагнитного перемешивани жидкой фазы непрерывного слитка
US20070074845A1 (en) * 2003-10-27 2007-04-05 Rotelec Electromagnetic agitation method for continuous casting of metal products having an elongate section

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017117465A1 (en) * 2015-12-29 2017-07-06 Extreme Caster Services, Inc. Improved roll for high temperature environments
US11110511B2 (en) * 2018-03-22 2021-09-07 Roser Technologies, Inc. Continuous caster roll having a spiral fluted axle
IT201800006635A1 (it) * 2018-06-25 2019-12-25 Metodo di contenimento di una bramma durante la colata
WO2020002313A1 (en) 2018-06-25 2020-01-02 Rotelec Sa Method for containing a slab during continuous casting
RU2765642C1 (ru) * 2018-06-25 2022-02-01 Ротелек Са Способ удержания сляба при непрерывном литье
US11969782B2 (en) 2018-06-25 2024-04-30 Rotelec Sa Method for containing a slab during continuous casting
EP3766599A1 (de) 2019-07-17 2021-01-20 Primetals Technologies Austria GmbH Elektromagnetische spulenanordnung und elektromagnetische rührrolle für eine stranggussanlage
EP3766600A1 (de) 2019-07-17 2021-01-20 Primetals Technologies Austria GmbH Elektromagnetische spulenanordnung und elektromagnetische rührrolle für eine stranggussanlage
EP3871803A1 (de) 2019-07-17 2021-09-01 Primetals Technologies Austria GmbH Elektromagnetische spulenanordnung und elektromagnetische rührrolle für eine stranggussanlage
AT523307A3 (de) * 2020-01-01 2023-07-15 Skf Ab Rollenlinieneinheit & Stranggießanlage
CN112548053A (zh) * 2020-11-23 2021-03-26 湖南中科电气股份有限公司 连铸板坯二冷区非对称分节辊式电磁搅拌装置

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BR112014019299B1 (pt) 2018-11-21
KR20140138700A (ko) 2014-12-04
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RU2600776C2 (ru) 2016-10-27
RU2014132904A (ru) 2016-05-20
BR112014019299A8 (pt) 2017-07-11
BR112014019299A2 (de) 2017-06-20
EP2830794B1 (de) 2016-10-26
WO2013143557A1 (fr) 2013-10-03
CN104159686B (zh) 2016-03-23
CN104159686A (zh) 2014-11-19
EP2830794A1 (de) 2015-02-04
KR101728444B1 (ko) 2017-05-02

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