EP4101560A1 - Agitation des billettes ou des blooms coulés à l'aide de l'agitateur à brin oscillant - Google Patents

Agitation des billettes ou des blooms coulés à l'aide de l'agitateur à brin oscillant Download PDF

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Publication number
EP4101560A1
EP4101560A1 EP22173780.2A EP22173780A EP4101560A1 EP 4101560 A1 EP4101560 A1 EP 4101560A1 EP 22173780 A EP22173780 A EP 22173780A EP 4101560 A1 EP4101560 A1 EP 4101560A1
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EP
European Patent Office
Prior art keywords
strand
steel strand
stirrer
during
reversal point
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.)
Pending
Application number
EP22173780.2A
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German (de)
English (en)
Inventor
Franz Wimmer
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.)
Primetals Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Publication of EP4101560A1 publication Critical patent/EP4101560A1/fr
Pending legal-status Critical Current

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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
    • B22D11/12—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
    • 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
    • B22D11/0401—Moulds provided with a feed head
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1281—Vertical removing
    • 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
    • B22D11/141—Plants for continuous casting 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
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons

Definitions

  • the present invention is also based on a control program that has machine code that can be processed by a control device of a continuous casting machine for producing a billet or a bloom, the processing of the machine code by the control device causing the control device to activate a strand stirrer of a holding device in which a stationary steel strand that has an already solidified strand shell and a still liquid core gradually solidifies during a solidification time to form the billet or bloom, in such a way that the liquid core is stirred by the strand stirrer during the solidification time.
  • the present invention is also based on a control device of a continuous casting machine for producing a billet or a bloom, the control device being programmed with such a computer program so that, during operation, it has a strand stirrer of a holding device in which a strand shell that has already solidified and a strand shell that is still liquid Core-having stationary steel strand gradually solidifies during a solidification time to form the billet or the bloom, controlled in such a way that the liquid core is stirred by means of the strand stirrer during the solidification time.
  • strand stirrers In the case of continuous casting plants, there are usually several strand stirrers. For example, there is often a mold stirrer that stirs the still liquid melt in the continuous mold. Even after exiting the continuous mold, stirring often takes place at one point or at several points. Seen in the direction of casting, the last strand stirrer is usually arranged in the vicinity of the location of the continuous casting machine where the bottom tip of the cast steel strand forms. The strand stirrers are usually stationary, i.e. they cannot be moved or can only be moved slightly in the casting direction.
  • Strand stirrers are also often present in semi-continuous continuous casting installations, such as are typically used for casting blooms.
  • configurations are known for continuous casting plants in which only a single strand stirrer is present, which can be moved in the casting direction. This is also explained in the patent documents mentioned at the outset.
  • the object of the present invention is to create possibilities by means of which the center increases can be reduced more than in the prior art in a simple and reliable manner.
  • a manufacturing method of the type mentioned is designed in that the strand stirrer is moved during the solidification time with an oscillation stroke in a vertically oscillating manner along the steel strand between an upper and a lower reversal point.
  • the strand stirrer can function both as a typical strand stirrer in the narrower sense (i.e. a stirrer that stirs the steel strand in an area where the strand shell is still relatively thin) and as a final stirrer (i.e. a stirrer that stirs the steel strand in the area of the sump tip stirs) at the same time.
  • a single stirrer thus takes on functions that are usually implemented with two stirrers.
  • the upper reversal point is fixed.
  • the upper reversal point can be at a predetermined distance from the position of an upper edge of the completely cast steel strand, for example coincide with the upper edge of the completely cast steel strand or be up to approx. 30 cm below the upper edge or slightly above the upper edge.
  • the upper reversal point is preferably variable.
  • the position of the upper reversal point can be adapted in particular to the solidification behavior of the steel strand.
  • the upper reversal point can be determined as a function of an upper location or as a function of a lower location.
  • the top location in this case is that location along the cast steel strand in the fixture where the liquidus temperature prevails.
  • the bottom location is that location along the cast steel strand in the fixture where the solidus temperature prevails.
  • the upper reversal point first moves down during the solidification time—namely when the steel strand is inserted into the holding device—and then gradually up.
  • the top dead center may be determined to be a predetermined distance above the top location or a predetermined distance above the bottom location.
  • the temperature field of the steel strand during solidification is preferably calculated using a computer model comprising a two- or three-dimensional heat conduction equation. The calculation is preferably done in real time during the manufacture of the billet or bloom, i.e. online.
  • the lower reversal point is fixed in a simple embodiment.
  • the lower reversal point can have a predetermined distance from the position of a lower edge of the completely cast steel strand, for example coincide with the lower edge of the completely cast steel strand or be up to approx. 30 cm above the lower edge or be slightly below the lower edge.
  • the lower reversal point is also preferably variable in a completely analogous manner.
  • the position of the lower reversal point can also be adapted in particular to the solidification behavior of the steel strand.
  • the lower reversal point can be determined as a function of the upper location or as a function of the lower location.
  • the bottom reversal point may be determined to be a predetermined distance above or below the top location, or a predetermined distance above or below the bottom location.
  • the position of the upper and lower reversal point can be coordinated in particular in such a way that on the one hand the upper reversal point is at an upper edge of the fully cast steel strand or below and on the other hand, as long as the distance of the bottom dead center from the upper edge of the fully cast steel strand is at least as great as a fixed nominal lift, the top dead center is determined as a function of the bottom dead center in such a way that the oscillation lift is equal to the fixed nominal lift is. On the other hand, if and as long as the bottom dead center is less than the fixed nominal stroke away from the top edge, the top dead center is set equal to the top edge of the steel strand. The latter case can occur both during the introduction of the steel strand into the holding device and when the steel strand has been completely introduced into the holding device.
  • the efficiency of stirring is optimized by matching the upper and lower reversal points accordingly.
  • the upper location and/or the lower location can be determined as required.
  • the top location and/or the bottom location may be determined as a function of time from the start of pouring or from the end of pouring. This approach is relatively easy to implement.
  • the strand stirrer is designed as an electromagnetic stirring coil that is fed with at least one alternating current.
  • the at least one alternating current is preferably varied during the oscillation of the strand stirrer as a function of the current position of the strand stirrer.
  • Current strengths, frequencies, phase angles and other variables characterizing the at least one alternating current can be varied as required.
  • the processing of the machine code by the control device causes the control device to control the strand stirrer in such a way that during the solidification time the strand stirrer is also moved vertically oscillating along the steel strand between an upper and a lower reversal point with an oscillation stroke.
  • the processing of the machine code by the control device preferably even has the effect that the control device implements at least one of the advantageous operating modes of the strand stirrer explained above in connection with the production method.
  • control device having the features of claim 14.
  • the control device is programmed with a control program according to the invention, so that the control device controls the strand stirrer as explained above.
  • control device is designed as a control device according to the invention in a continuous casting machine of the type mentioned, so that the strand stirrer is moved during the solidification time with an oscillating stroke between an upper and a lower reversal point.
  • Liquid steel 1 is poured from above into a continuous mold 2 of a continuous casting machine and a steel strand 3 is drawn from the continuous mold 2 below.
  • the steel strand 3 often has a large cross section, for example in the case of a circular cross section a diameter of 600 mm and more, sometimes up to over 1000 mm. Due to the relatively low solidification rate, the steel strand 3 - see in particular FIG 7 - An already solidified strand shell 4 and a still liquid core 5. In this state--that is, with the strand shell 4 already solidified and the core 5 still liquid--the steel strand 3 is introduced from above into a holding device 6 of the continuous casting machine.
  • the holding device 6 is in the prior Technology often referred to as tertiary cooling.
  • the holding device 6 is arranged below the continuous mold 2 .
  • the introduction of the steel strand 3 into the holding device 6 thus takes place without a change in direction compared to the withdrawal from the continuous mold 2 .
  • the 1 to 5 show different phases of the casting process.
  • a strand head 7 of a dummy strand is still in the continuous mold 2 and seals it on its underside.
  • the strand head 7 has just passed a secondary cooling zone of the continuous casting machine.
  • the steel strand 3 is drawn off from the continuous mold 2 and supported, for example by means of strand guide rollers.
  • the steel strand 3 is lowered by a "ram" supporting the strand head 7 without strand guide rollers pulling out the strand.
  • the steel strand 3 is cooled in the secondary cooling zone by means of cooling nozzles.
  • the strand head 7 is in the representation of FIG 2 just entered the holding device 6.
  • the steel strand 3 is further drawn out of the continuous mold 2.
  • the strand head 7 has reached the bottom of the holding device 6, so that the steel strand 3 remains stationary in the holding device 6.
  • An upper edge 8 of the steel strand 3 is usually flush or nearly flush with an upper edge of the holding device 6 .
  • FIG. 6 shows in a solid line the location of the sump top as a function of time t.
  • an upper location O1 (see Fig 10 ) where the liquidus temperature TL prevails in the center of the steel strand 3.
  • a lower site O2 (see also 10 ) where the solidus temperature TS prevails in the center of the steel strand 3.
  • the casting of the steel strand 3 is started.
  • a base point of the steel strand 3 is therefore still above the holding device 6.
  • the sump tip forms straight.
  • the base point of the steel strand 3 migrates downwards in accordance with the withdrawal of the steel strand 3 from the continuous mold 2 .
  • the sump tip is a little above the base of steel strand 3.
  • the feeding of the liquid steel 1 to the continuous mold 2 is terminated.
  • the base of the steel strand 3 moves further down, ie has not yet reached its lowest point.
  • the top of the swamp has moved up a little bit relative to the base.
  • the strand head 7 and thus also the base of the steel strand 3 has reached its lowest point.
  • the top of the swamp has moved up a little bit relative to the base.
  • the sump tip gradually migrates upwards until it reaches the upper edge 8 of the steel strand 3 at a point in time t4. Only at time t4 has the steel strand 3 solidified into the billet or the bloom.
  • the steel strand 3 remains in the holding device 6 at least up to time t4 (usually even beyond that).
  • the thickness of the strand shell 4 gradually increases over the entire length of the steel strand 3, so that the sump tip moves upwards.
  • the period of time between the times t1 and t4 or between the times t3 and t4, i.e. after the presence of a stationary steel strand 3, can be regarded as the solidification time.
  • the solidification time is generally in the range of a number of hours, for example between 5 hours and 15 hours, usually 10 hours and more.
  • the time span between times t1 and t2 or between times t1 and t3 can be regarded as the pouring time, as required.
  • the pouring time is considerably shorter than the solidification time.
  • the casting time is a maximum of 3 hours, often in the range of approx. 1 hour.
  • the steel strand 3 Even while the steel strand 3 is in the holding device 6 , the steel strand 3 still has the strand shell 4 and the liquid core 5 .
  • the 7 to 9 each show a cross section through the steel strand 3 immediately after it has been completely inserted into the holding device 6.
  • FIG 7 shows a cross section in the upper area of the steel strand 3, 8 a cross-section in the central area of the steel strand 3.
  • 9 shows a cross section in the area of the sump tip of the steel strand 3.
  • the liquid core 5 of the steel strand 3 is stirred by means of a strand stirrer 9 of the holding device 6 .
  • the strand stirrer 9 is only in 8 shown.
  • the strand stirrer 9 is, as in 8 is indicated by a double arrow, can be moved by means of a drive 10 in a vertically oscillating manner along the steel strand 3 .
  • the drive 10 can be designed as a hydraulic cylinder. However, other configurations are also possible, in particular as an electric drive.
  • the strand stirrer 9 is in accordance with 10 controlled by a control device 11 of the continuous casting machine. If necessary, other components of the continuous casting machine can also be controlled by the control device 11, for example the feeding of the liquid steel 1 into the continuous mold 2, the withdrawal of the steel strand 3 from the continuous mold 2 and the associated insertion into the holding device 6 as well as various cooling systems, for example the continuous mold 2 and the steel strand 3 in the secondary cooling zone and the holding device 6.
  • the control device 11 is programmed with a control program 12.
  • the control program 12 includes machine code 13 which can be processed by the control device 11 . The processing of the machine code 13 by the control device 11 causes the control device 11 to control the strand stirrer 9 in a manner that is explained in more detail below.
  • the liquid core 5 is stirred by means of the strand stirrer 9 during the solidification time.
  • the stirring coil according to FIG 9 fed with at least one alternating current I.
  • the further configuration can be as required.
  • Advantageous configurations of a stirring coil, by means of which the liquid core 5 can be stirred in different ways, are for example in WO 2017/162 418 A1 explained in more detail.
  • the precise manner in which the liquid core 5 is stirred is of secondary importance within the scope of the present invention. The only decisive factor is that the precise effect on the liquid core 5 is determined by the alternating current I (for example its current strength, its frequency and, in the case of several phases of the alternating current I, by phase relationships between the phases).
  • the strand stirrer 9 is moved during the solidification time with an oscillation stroke h oscillating between an upper reversal point P1 and a lower reversal point P2.
  • the drive 10 a position value p is specified.
  • the position value p is time-dependent according to the desired oscillation.
  • both the upper reversal point P1 and the lower reversal point P2 are fixed.
  • the frequency of the oscillation can also be constant. However, it can also be varied over time.
  • the oscillation can be sinusoidal or non-sinusoidal as required.
  • a non-sinusoidal movement can exist, for example, if the oscillation stroke h and/or the oscillation frequency is relatively large (in particular the product exceeds a limit value), so that the strand stirrer 9 with a sinusoidal movement in the central area between the upper and lower reversal points P1, P2 would have to be moved at a speed that can no longer be reached by the drive 10.
  • the at least one alternating current I can also be varied while the strand stirrer 9 is oscillating as a function of the current position p of the strand stirrer 9 .
  • the upper reversal point P1 can in particular have a predetermined distance a1 from the position of the upper edge 8 of the completely cast steel strand 3 .
  • the distance a1 is usually in the range of less than 100 cm.
  • the distance a1 can be positive or negative as required.
  • the lower reversal point P2 can have a predetermined distance a2, in particular from the position of a lower edge of the completely cast steel strand 3.
  • the distance a2 is usually also in the range of less than 100 cm.
  • the distance a2 can also be positive or negative as required.
  • the position of the lower edge of the completely cast steel strand 3 corresponds to the location of the strand head 7 .
  • the upper reversal point P1 is fixed. With regard to the exact position of the upper turning point P1, the statements on 11 applicable in an analogous way.
  • the lower reversal point P2, on the other hand, is variable.
  • the lower turning point P2 at 12 determined depending on the upper location O1.
  • the lower reversal point P2 can be determined in such a way that it coincides with the upper location O1 or is a predetermined distance up or down from the upper location O1.
  • the bottom reversal point P2 can be determined as a function of the bottom location O2.
  • the bottom reversal point P2 is usually determined in such a way that it lies above the bottom location O2 and is at a predetermined distance from the bottom location O2. Due to the fact that the upper reversal point P1 is fixed, but the lower reversal point P2 is variable, there is an oscillation with a time-varying oscillation stroke h.
  • the statements to 11 on the frequency of the oscillation and the form of the oscillation as well as the possible variation of the alternating current I also apply to 12 .
  • the control device 11 implements according to FIG 10 preferably a thermodynamic model 14 of the steel strand 3.
  • the temperature and solidification behavior of the steel strand 3 is modeled online by the control device 11 on the basis of a heat conduction equation and a phase transformation equation.
  • At least the heat conduction equation is a differential equation. This often applies to the phase change equation as well.
  • the heat conduction equation and the phase change equation are coupled and are solved iteratively.
  • the model 14 is two-dimensional or three-dimensional. Corresponding models are generally known to those skilled in the art.
  • both the upper reversal point P1 and the lower reversal point P2 are variable.
  • the lower turning point P2 at 13 - as well as at 12 - determined depending on the upper location O1.
  • the bottom reversal point P2 can be determined as a function of the bottom location O2.
  • the relevant remarks 12 are applicable in an analogous manner.
  • a completely analogous procedure can be taken for the upper reversal point P1. The determination only has to be made in such a way that the upper reversal point P1 is above the lower reversal point P2.
  • the statements to 11 on the frequency of the oscillation and the form of the oscillation as well as the possible variation of the alternating current I also apply to 13 .
  • the upper reversal point P1 is set equal to the upper edge 8 of the steel strand 3 .
  • this state occurs briefly between times t1 and t2, while the steel strand 3 is being introduced into the holding device 6.
  • this state occurs shortly before time t4. Therefore, during these two periods, the oscillation amplitude h is smaller than the nominal amplitude hN.
  • both the upper reversal point P1 and the lower reversal point P2 are variable.
  • the lower reversal point P2 as such and also the upper reversal point P1 as such are in 14 although not marked. Instead, however, the position p of the strand stirrer 9 is shown as a function of time t.
  • the lower reversal point P2 remains at an upper level N1 until the steel strand 3 has been introduced into the holding device 6 to a significant extent. Thereafter, the bottom dead center P2 is gradually lowered until it reaches a lower level N2. In particular, he can follow the introduction of the steel strand 3 into the holding device 6 during the lowering. After that, the lower reversal point P2 remains at the lower level N2 for some time. During a short period of time, the bottom dead center P2 is lowered below the lower level N2 and then gradually raised to the upper level N1.
  • the upper level N1 is preferably reached at time t4.
  • the strand stirrer 9 preferably always oscillates with the nominal stroke nH.
  • the present invention has many advantages.
  • one and the same strand stirrer 9 can stir the liquid core 5 over the entire length I or at least over almost the entire length I of the steel strand 3 . Nevertheless, a very high quality of the steel strand 3 can be achieved, particularly in its interior.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP22173780.2A 2021-06-08 2022-05-17 Agitation des billettes ou des blooms coulés à l'aide de l'agitateur à brin oscillant Pending EP4101560A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50459/2021A AT525111A1 (de) 2021-06-08 2021-06-08 Rühren bei gegossenen Vorblöcken mit oszillierendem Strangrührer

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Publication Number Publication Date
EP4101560A1 true EP4101560A1 (fr) 2022-12-14

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EP22173780.2A Pending EP4101560A1 (fr) 2021-06-08 2022-05-17 Agitation des billettes ou des blooms coulés à l'aide de l'agitateur à brin oscillant

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AT (1) AT525111A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987841A (en) * 1974-06-24 1976-10-26 Nippon Steel Corporation Continuous casting system
US4375830A (en) * 1980-03-20 1983-03-08 Concast Ag Method and apparatus for supporting a steel strand produced during a continuous strand casting method
US5762127A (en) * 1994-06-06 1998-06-09 Danieli & C. Officine Meccaniche Spa Method to control the deformations of the sidewalls of a crystalliser and continuous-casting crystalliser
WO2013174512A2 (fr) * 2012-05-24 2013-11-28 Ergolines Lab S.R.L. Dispositif de brassage électromagnétique
WO2015079071A2 (fr) 2014-03-27 2015-06-04 Primetals Technologies Austria GmbH Coulée semi-continue d'une barre en acier
WO2017162418A1 (fr) 2016-03-21 2017-09-28 Primetals Technologies Austria GmbH Bobine d'agitation entourant en partie une billette métallique
WO2018192903A1 (fr) 2017-04-20 2018-10-25 Inteco Melting And Casting Technologies Gmbh Procédé et dispositif servant à la fabrication de lingots à partir de métal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1675033A1 (ru) * 1988-04-04 1991-09-07 Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения им.А.И.Целикова Способ электромагнитного перемешивани жидкой фазы непрерывнолитого слитка
AT515244A2 (de) * 2013-12-30 2015-07-15 Inteco Special Melting Technologies Gmbh Verfahren zur Herstellung von langen Gussblöcken großen Querschnitts
DE102015223788A1 (de) * 2015-11-30 2017-06-01 Sms Group Gmbh Verfahren zum Stranggießen eines Metallstranges und durch dieses Verfahren erhaltener Gießstrang

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987841A (en) * 1974-06-24 1976-10-26 Nippon Steel Corporation Continuous casting system
US4375830A (en) * 1980-03-20 1983-03-08 Concast Ag Method and apparatus for supporting a steel strand produced during a continuous strand casting method
US5762127A (en) * 1994-06-06 1998-06-09 Danieli & C. Officine Meccaniche Spa Method to control the deformations of the sidewalls of a crystalliser and continuous-casting crystalliser
WO2013174512A2 (fr) * 2012-05-24 2013-11-28 Ergolines Lab S.R.L. Dispositif de brassage électromagnétique
WO2015079071A2 (fr) 2014-03-27 2015-06-04 Primetals Technologies Austria GmbH Coulée semi-continue d'une barre en acier
US20170216908A1 (en) * 2014-03-27 2017-08-03 Primetals Technologies Austria GmbH Semi-continuous casting of a steel strip
EP3251773B1 (fr) 2014-03-27 2020-05-06 Primetals Technologies Austria GmbH Coulée semi-continue d'une barre d'acier
WO2017162418A1 (fr) 2016-03-21 2017-09-28 Primetals Technologies Austria GmbH Bobine d'agitation entourant en partie une billette métallique
WO2018192903A1 (fr) 2017-04-20 2018-10-25 Inteco Melting And Casting Technologies Gmbh Procédé et dispositif servant à la fabrication de lingots à partir de métal

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