EP3259084A2 - Procédé et installation pour produire des barres d'acier - Google Patents

Procédé et installation pour produire des barres d'acier

Info

Publication number
EP3259084A2
EP3259084A2 EP16721345.3A EP16721345A EP3259084A2 EP 3259084 A2 EP3259084 A2 EP 3259084A2 EP 16721345 A EP16721345 A EP 16721345A EP 3259084 A2 EP3259084 A2 EP 3259084A2
Authority
EP
European Patent Office
Prior art keywords
strand
hot
cold
mold
casting
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.)
Withdrawn
Application number
EP16721345.3A
Other languages
German (de)
English (en)
Inventor
Michael Merz
Adolf Gustav Zajber
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 EP3259084A2 publication Critical patent/EP3259084A2/fr
Withdrawn legal-status Critical Current

Links

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
    • B22D11/128—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

Definitions

  • the invention relates to a method and a plant for producing steel strands, wherein a metallic melt from a ladle, optionally via a distributor trough, at least one subsequent water-cooled vertical mold with Kokillenoszillation is supplied, wherein the solidifying in the mold melt as a hot strand by means of a dummy strand
  • the mold is vertically downwards in a first at least one formed with support rollers support segment having strand support area and then in a downstream vertical strand guide area in which the hot strand is cooled, is spent.
  • steel strands of crack-sensitive, high-alloyed or alloyed steel grades whose crack sensitivity or brittleness does not permit a continuous casting process with bending of the steel strand, in conventional block casting, in particular with required dimensions of over 400 mm to 800 mm, or produced such vertical continuous casting, in which the solidified after leaving the strand guide area steel strand is divided by a separator in partial lengths, which are then discharged.
  • Such a vertical continuous casting plant which can be avoided in particular with steel strands thicker than 300 mm problematic bending, is known from DE 20 2010 015 499 U1. It can thus be at casting speeds of about 0.2 to 0.4 m / min. up to 400 mm thick steel strands with the cross-section of a slab, a billet, a billet or a pre-profile until the final solidification.
  • it is indispensable in the strand guide area a plurality of drivable strand guide rollers, possibly summarized in Treibrollengerüsten or drive roller units to make against the gradually souerstarrenden steel strand to take this and the leading dummy strand, the drivable strand guide rollers determine the speed of the drawn steel strand.
  • a casting program of high alloyed steel grades and an annual production of approximately 200,000 t / a must be present.
  • the invention is therefore an object of the invention to provide a method and a system for producing steel strands of the type mentioned above, which can be avoided the disadvantages mentioned and in particular also achieve high-alloy steel grades and steel strands with very large dimensions without adverse effects on the product to let.
  • This object is achieved by a method according to the invention in that the hot strand is discharged by lowering a cold strand at its leading in the casting direction, lower end receiving lifting means to reach its dependent on the supplied amount of melt and casting format finished length in the strand guide area, wherein the hot strand is held only when lowering in the strand guide area in the vertical position of engageable with the hot strand guide means, with no forces and / or stresses are introduced into the strand shell.
  • the method is particularly suitable for casting large cross-sections Long solidification time and for steels, which have a pronounced tendency to cracks due to their alloy nature under mechanical stress or can be cast in the conventional continuous casting process only with limited thickness dimensions.
  • the steel strands produced can have round, rectangular, hexagonal and octagonal cross sections in a dimensional range of preferably 130 mm to 1500 mm diameter or diagonal dimension or even larger dimensions. It can be the qualitative, procedural and cost advantages of ingot casting and continuous casting unite, which can be avoided with the disadvantageous for the strand shell formation mechanical effects required in the known vertical continuous casting drift wheels ormaschinerollengerüste.
  • a preferred embodiment of the invention provides that the strand guide region over at least the length of the hot strand can be thermally isolated from the environment. It is thus depending on the technological requirements and depending on the type of steel targeted, exactly predetermined, more or less accelerated cooling or keeping warm when entering the vertical strand guide area on the surface temperatures of about 900 ° to 1200 ° C having hot strand possible.
  • the Secondary cooling can be continued after the strand support over the length of the hot strand in the vertical strand guide area and is accordingly, as in the strand support area, divided into several control loops. In order to avoid unwanted cooling by running water, the secondary cooling water is discharged by suitable means to the outside.
  • the invention is not limited to specific materials or material groups.
  • the qualitative and economic advantages are particularly evident in higher grade, difficult to cast material groups to advantage.
  • the following steel groups may be mentioned:
  • Heat-resistant steels (18% Ni, 19% Co, 1% Ti, 0.35% Cr)
  • Drill rods (drill collars, ⁇ 0.03% C, 20% Mn, 12% Cr, 0.5% N)
  • an upper portion of the discharged from the mold hot strand in the strand support area can be intensively cooled until the formation of a hard upper strand section. If then detected according to a further advantageous proposal of the invention after the separation of the cold strand from the hot strand of hot strand of a transport and spent for final cooling in remote from the strand guide area or the casting machine provided Kern-Festarrungspositionen, already equal to the hard upper strand section of the otherwise detected over its remaining length not yet core solidified hot strand and the hot strand are transported either in at least one or more, for example, in the immediate vicinity of the casting machine or in the outside of the casting machine in the production hall established core-solidification positions.
  • the casting machine can be designed with one or more strands. On these main strands can, depending on the casting format, with several castles z. B. in twin or triplet casting, etc. are poured. Accordingly, a core solidification position can be provided for final solidification for each hot strand. In any case, it can be achieved that after the removal of the hot strand or hot strands from the casting machine and as soon as the cold strand head or the cold strand heads were prepared for re-casting, the next casting process can begin. This allows a high annual production, which is equivalent to conventional vertical continuous casting, but has the significant advantage of comparatively low investment costs.
  • a steel support frame forms the strand guide region, wherein the steel support frame arranged from top to bottom through central shaft and distributed over the entire length at a distance from each other, successively from a non-operating position against the discharged cold and / or hot strand adjustable, cooled strand guide rollers, wherein in the central shaft in the unhindered by the strand guide rollers free space and lowered, with a support for receiving the lower end of a rigid, bolt-like dummy strand trained, is arranged on two opposite sides of the steel framework scaffold guided lifting means.
  • the lower end of the dummy bar By in the for passing the cold and hot strand from top to bottom of internals or the like continuously free central shaft lowering, the lower end of the dummy bar, for example, in a positive reception with possibly additional mechanical attachment bearing lifting means, the hot strand without Simply exert any force on the strand shell by lowering the lifting means, z. B. with a lowering speed of 0.2 m / min.
  • wedge-shaped strips guided lifting means is the successive delivery of the cold and hot strand only vertically holding, cooled strand guide rollers.
  • the strand quality can be influenced not only by targeted cooling of the surface, but also by electromagnetic stirring of the liquid strand core on. This can be done in addition to an upstream of the mold surrounding electromagnetic stirrer, for example by means of a permanently installed, the steel support frame immediately upstream electromagnetic stirrer or a movable in the central shaft electromagnetic stirrer. Because as long as the strand guide rollers are in their inoperative position, the central shaft offers not only sufficient for the lowering lifting means free space, but also for the lifting means in not yet employed strand guide rollers subsequently displacing, the hot strand at a small distance enclosing electromagnetic stirrer.
  • a preferred embodiment of the invention provides that the lifting means consists of a transverse to the central shaft traverse, which is connected at both of the steel support frame facing sides with endlessly circulating, guided over upper and lower sprockets chains, and a drive associated with each chain, wherein the Drives and acted upon by these upper sprockets on the steel support frame and the chains deflecting the lower sprockets are arranged below the steel support frame.
  • endless chain drives z. B. with a hydraulic motor or an electromechanical drive for each chain in the central shaft on the two opposite sides or side cheeks
  • the z. B. may consist of a stiffened by transverse and diagonal braces frame construction, require only a very small amount of space.
  • the traverse transverse to the central shaft can be kept very narrow, because their width at most needs to be slightly larger than the support or the recording for the invigorating cold leg with the following hot strand.
  • the crosshead could pass the central shaft even with salary strand guide rollers, namely in the remaining between two adjacent strand guide rollers free spaces.
  • a preferred embodiment of the invention provides that the steel framework is formed over its entire length with a U-shaped cross-section open to one side. It can thus achieve a significantly increased casting sequence, because the not yet core solidified hot strand, as soon as it is discharged, recorded for complete Kernerstarrung by a means of transport and can be spent on this open side in a position outside the caster.
  • the trolley with one yourself in the direction of travel extending recess fork-like and has a clamping mechanism for gripping an upper or lower end portion of the hot strand. If the trolley is placed on the platform between the mold and the steel support frame, the upper end of the hot strand is cooled before being transported to solidification intense and in this then hard end portion of the clamping mechanism, for. B. jaws which are pressed by acted upon by hydraulic cylinders eccentrics or wedges, detected and transported to the intended core solidification positions.
  • a particularly preferred embodiment of the invention provides that a the steel support frame circumferentially completely enclosing insulating chamber is provided at least in one of the length of the discharged hot strand above the dummy bar corresponding area which is divided over the length into chamber segments, each chamber segment consists of two half-shells, each of which a half-shell for opening or closing the insulating chamber of the opposite half-shell is removable.
  • the isolation chamber with its chamber or holding segments allows the optimization of a targeted or a delayed cooling of the hot strand, the rounded or U-shaped shells are closed or opened zonenroy on the path tracking of the lifting means or the lifting traverse by pivoting or linear method can.
  • An advantageous embodiment of the invention provides that in the direction of travel of the trolley spaced from the strand guide area at least one core solidification position is provided, which is designed as the strand guide area with a steel support frame and a segmented insulation.
  • core solidification positions prepared in this way may also be removed from the casting installation to any of a hall crane Provision of the production hall will be provided. Due to the steel support frame with the engageable strand guide rollers, the hot strand is held there only vertically and there is the possibility of treating the liquid steel in the strand inside by a movable in the insulating chamber or permanently installed in steel support frame above the insulating electromagnetic stirrer as well as the targeted delayed or accelerated cooling by opening and / or closing the heat-retaining chamber segments.
  • the casting rod closing the closing, with the cold strand releasably connected cold strand head is formed with a trough, wherein in the trough, a connecting with the supplied melt exhaust head of the cold rod head protrudes.
  • a cold strand head designed in this way, it is possible to improve the output of large-sized blocks or hot strands. Because at the start of casting the first impure part of the melt from the distribution channel is directed through the dip tube into the trough and enter there by solidification a positive connection with the exhaust head. The trough takes on the first, impure liquid steel, so that then already above the cold strand head is a clean steel without inclusions. However, the size of the trough or its receiving volume need not be designed to the expected volume of impure steel.
  • Figure 1 in a schematic representation of a partially longitudinally sectioned
  • Figure 2 shows a detail of Figure 1, the entire, extending beyond the strand support area addition, including the length of the dummy bar enclosing steel support frame, which is shown without strand guide rollers;
  • Figure 3 shows the steel framework in cross-section along the line III-III of
  • Figure 4 shows a detail of the Stahltraggerüsts a variant for the employment of distributed in the steel support frame over the length in spaced-apart planes strand guide rollers from a non-operating position to the discharged cold or hot strand;
  • FIG. 5 shows in detail the cold strand raised to cast a strand with its cold-rod head end into the mold
  • Figure 6 is a side view of the steel framework with a chain drive arranged on top of the steel support frame for a central shaft of the steel support frame crossing, the cold strand receiving, raisable and lowerable crosshead;
  • FIG. 7 shows a plan view along the line VII-VII of FIG. 5 of the complete chain drive arranged on two opposite side cheeks of the U-shaped steel support frame;
  • Mold subsequent traction support area and arranged above the vertical strand guide portion transport carriage for gripping and transporting a cast strand of hot in a provided away from the strand support area core solidification position; and Figure 9 as a detail of the dummy bar an embodiment of a retracted into the mold cold rod head.
  • Vertikalg tellstrom VG for producing steel strands is metallic melt from a ladle 1, which can be stored in a pan, a pan car or a ladle turret, a distributor trough 2 via a control of the melt supply Serving pan slide 3 and a protective tube 4 is supplied.
  • the distributor trough 2 distributes the melt by means of a dip tube 5 (see Fig.
  • a strand support region SSB adjoins here with a support segment 8, which has several integrated with an internal cooling by water strand support rollers 9 and integrated for the secondary cooling of the cast strand additionally having a spray nozzle assembly.
  • the strand support region SSB is followed by the vertical strand guide region SFB.
  • U-shaped, ie unilaterally open steel support frame 10 is arranged, which extends over a length which is at least the sum of the lengths of a cold strand 11 required for starting and of this auslegördgefg carried out by hot cast strand or Hot strand 12 corresponds.
  • the steel support frame 10 is shown only over the length enclosing the hot strand 12 in conjunction with an insulating chamber 13 which completely encloses the steel support frame 10 in the exemplary embodiment.
  • the insulating chamber 13 is divided over the length of the hot strand 12 in chamber segments 13 a, 13 b, 13 c, which consist of two half-shells of each of which a half-shell for opening or closing the insulating chamber of the opposite half-shell is removable, for. B. by pivoting or horizontal method by means of an actuator, which allows targeted heating or cooling of the hot strip 12 for special steels.
  • the U-shaped steel support frame 10 which consists of a rear wall 10a and two side walls 10b, 10c, each formed by a frame stiffened by horizontal struts 14 (see Figure 2), provides a central shaft 15 which is continuously free from top to bottom available.
  • strand guide rollers 16 are arranged, of which in the embodiment of Vertikalg tellstrom VG with an insulating chamber 13 there arranged strand guide rollers 16 are cooled, which from a the conveying from cold and hot strands 11, 12 not impairing inoperative position in the central shaft to against the cold or hot strand 11, 12 - as shown in Figure 4 - can be adjusted.
  • the strand guide rollers 16 can be made via hydraulic cylinders with horizontal guidance against the hot or cold strand 12, 11, as shown in Fig. 3.
  • the necessary driver rollers or Aus strictgerüste introduce high mechanical loads in the strand shell, cold and especially hot strand 11, 12 are held by the strand guide rollers 16 only in the vertical position, so that no forces and / or voltages can be introduced into the strand shell of the not yet core solidified hot strand 12.
  • the cold and the hot strand 11, 12 are namely not pulled out, but discharged through an arranged in the central shaft 15 of the steel frame 10, raised and lowered lifting means 19.
  • the lifting means 19 consists of a cross member 20 crossing the central shaft 15, which is arranged on the inside of the side cheeks 10b, c of the steel support frame 10, wedge-shaped guide rail.
  • Guide bar 21 is performed exactly without play, wherein the cross member 20 of two endless circulating chains 22 (see also Fig. 2) can be lowered or raised.
  • the chains 22 run over upper driven sprockets 23a provided on the side cheeks 10b, 10c of the steel support frame 10 and lower sprockets 23b arranged below the steel support frame 10 on the foundation and deflecting the chains 22 (see FIG. 2).
  • the driven sprockets 23a are mounted on shafts received by bearings 24 flanged on the side cheeks 10b, 10c and driven by a motor 25 (see Figures 6 and 7).
  • the traverse 20 of the lifting means 19 is formed with a support 26 (see Figures 2 and 5), which defines the position with its lower end therein, rigid bolt-like dummy strand 11 positionally secure.
  • a motor operated movable transport vehicle 28 is arranged on a working platform 27 of the vertical casting VG immediately above the steel support frame 10 for taking over and transporting a cast hot strand 12.
  • This is (see Fig. 8) as the steel support frame 10 like a fork or U-shaped thus formed to one side open cross-section.
  • the opening width or width of the recess 29 of the transport carriage 28 is designed according to the largest occurring format dimension of the cast strand.
  • a clamping mechanism 30 is provided on each fork of the trolley 28.
  • a core solidification position KE integrated in the vertical caster VG can be transported Hot strand 12 is detected by a transport harness 35 of a hall crane and spent in external, outside the vertical caster VG provided in the production hall core solidification KE, as indicated in Figure 1.
  • the integrated core solidification position KE can, as shown in Figure 1, with a steel support frame 10 and this fully enclosing, segmented insulating chamber 13, as also present in the casting machine, are formed. It is then possible to carry out the same specific heating or cooling variants in the internal or external core solidification positions KE as in a hot strand 12 remaining in the casting machine.
  • the bolt-like, rigid cold strand 11 is equipped with a cold strand head 36, designed as shown in FIG. 9, for large-format blocks or casting strands. This is formed at its upper end with a trough 37.
  • the patch on the upper end of the dummy bar 11 cold strand head 36 is connected via a bolt 38 to the dummy bar 11.
  • the cold strand head 36 receives centrally for extending into the trough 37 for connecting to the supplied melt extractor head 39, which is connected via a below the trough 37 in the dummy bar head 36 dipping attachment portion 40 by a bolt 41 with the dummy bar head 36.
  • the pull-out head 39 is packed at the bottom of the trough 37 with sealing material and cooling scrap 42, and the cold extrusion head 36 is provided with packing material 43 at the upper end of the trough 37 at its outer periphery for sealing against the inner mold wall.
  • the cold strand 11 prepared with the cold extrusion head 36 is positioned in the support 26 of the traverse 20 of the lifting means 19 moved in its lowest position in the steel support frame 10, as can be seen in FIG. From this lowermost position, the cold strand 11 is moved by raising the crossbar 20 to its uppermost position shown in FIG. 5, in which the cold strand 1 with its cold extrusion head 36 seals the mold by the packaging material 43, as shown in FIG.
  • the first impure part of the melt from the distributor trough 2 is directed through the dip tube 5 into the trough 37 of the cold strand head 36, where it undergoes a form-locking connection by solidification. tion with the extraction head 37 a.
  • the not yet core solidified hot strand 12 including cold strand 11 may firstly remain in the casting machine until the complete core solidification in the Aus detail shown in Figure 1.
  • the steel support frame 10 over the length of the hot strand enclosing, segmented insulating chamber 13 there is the possibility of targeted or delayed cooling and stirring the meltdown by a - not shown in Figure 1 - in the central shaft 15 of the steel framework 10 vertically movable or stationarily arranged, electromagnetic Stirrer system in order to obtain an optimal strand quality for further processing.
  • the core solidification time can be four to six hours to core solidification and in this time by the casting machine blocking hot strand 12 a re-casting process can not take place.
  • the removal of the hot strand 12 by clamping the upper Warmstrangendes requires that previously an upper end portion of about 1 m has been cooled until solidification.
  • the hot strand can be treated with the same metallurgical processes, ie in particular technological cooling according to steel grade and use of an electromagnetic stirrer system, such as in the strand guiding region SFB of the vertical casting plant VG.
  • the vertical casting machine VG After the removal of the hot strand 12 in a Kernerstarrungsposition KE the vertical casting machine VG is ready for a next casting immediately after the cold strand 11 was prepared with a held in reserve cold strand head 36.
  • the hot strand 12 transported away with the cold strand head 36 into a core solidification position KE can there be separated from the exhaust head 39 or, after the core solidification of the hot strand 12 in a downstream transverse region, the cold strand head 36 can be separated together with the pull-out head 39.
  • the hot strand 12 can be transported by the transport carriage 28 into a position provided laterally next to the casting machine or the steel support frame 10 in the vertical casting installation VG and parked in a vertical position. From there, the hot strand 12 can be detected in its upper end portion, which was previously intensively cooled in the strand support area SSB, with the transport harness 35 or a hoist of a hall crane and placed in an external storage position in the production hall to core solidification. In this external core solidification position KE, the same facilities as in the integrated KE position can be provided for the technological treatment of the hot strand.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

L'invention concerne un procédé et une installation de coulée verticale (VG) pour produire des barres d'acier. Un bain de métal fondu sortant d'une poche de coulée (1), éventuellement par un chenal répartiteur (2), est acheminé dans au moins une lingotière (6a) verticale placée en aval et pourvue d'un système d'oscillation (6b), le métal fondu se solidifiant dans la lingotière (6a) est transféré sous la forme d'une barre chaude (12) hors de la lingotière (6a) verticalement vers le bas au moyen d'une barre froide (11), préalablement dans une zone de support de barre (SSB) présentant au moins un segment de support (8) constitué de rouleaux de support de barre (9), puis dans une zone de guidage de barre (SFB) verticale, située en aval, dans laquelle la barre chaude (12) est refroidie. Selon l'invention, pour permettre une coulée semi-continue de barres de coulée jusqu'à de très grands formats, et en particulier également dans des qualités d'acier fortement alliées sans effets néfastes sur la surface des barres, la barre chaude (12) est extraite dans la zone de guidage de barre (SFB) par abaissement d'un moyen de levage (19) saisissant la barre froide (11) par son extrémité inférieure, à l'avant dans le sens de coulée, jusqu'à ce que la barre chaude (12) atteigne sa longueur finale qui dépend de la quantité de métal fondu acheminée et du format de coulée, la barre chaude (12) étant maintenue lors de sa descente dans la zone de guidage de barre (SFB) dans la position verticale uniquement par des moyens de guidage (16) pouvant être placés contre la barre chaude (12), de sorte qu'aucune force et/ou aucune contrainte n'est introduite dans la surface de la barre.
EP16721345.3A 2015-02-19 2016-02-16 Procédé et installation pour produire des barres d'acier Withdrawn EP3259084A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015002188 2015-02-19
PCT/DE2016/000055 WO2016131437A2 (fr) 2015-02-19 2016-02-16 Procédé et installation pour produire des barres d'acier

Publications (1)

Publication Number Publication Date
EP3259084A2 true EP3259084A2 (fr) 2017-12-27

Family

ID=55952909

Family Applications (1)

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EP16721345.3A Withdrawn EP3259084A2 (fr) 2015-02-19 2016-02-16 Procédé et installation pour produire des barres d'acier

Country Status (3)

Country Link
EP (1) EP3259084A2 (fr)
DE (1) DE112016000811A5 (fr)
WO (1) WO2016131437A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101755400B1 (ko) * 2015-09-16 2017-07-27 주식회사 포스코 수직형 주조 설비 및 이를 이용한 수직 주조 방법
WO2018083331A1 (fr) 2016-11-07 2018-05-11 Primetals Technologies Austria GmbH Procédé et chariot de transport servant à l'évacuation de barres en acier coulées individuellement dans une installation de coulée semi-continue
WO2018172358A1 (fr) * 2017-03-21 2018-09-27 Primetals Technologies Austria GmbH Installation et procédé de coulée semi-continue de barres de bloom
CN108436046B (zh) * 2018-05-23 2023-11-24 中冶京诚工程技术有限公司 一种超大规格圆坯的立式连铸生产设备及方法
CN115194111B (zh) * 2022-07-21 2024-04-30 武汉大西洋连铸设备工程有限责任公司 一种大圆坯至特大圆坯半连铸垂直浇铸工艺与设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1220116B (it) * 1987-07-30 1990-06-06 Danieli Off Mecc Dispositivo estrazione ed evacuazione colata continua verticale
AT509109B1 (de) 2009-12-14 2013-12-15 Siemens Vai Metals Tech Gmbh Stranggiessanlage zum erzeugen eines giessstrangs
AT512681B1 (de) * 2012-03-22 2016-08-15 Primetals Technologies Austria GmbH Vorrichtung und Verfahren zum kontinuierlichen Stranggießen eines großformatigen Stahlstrangs

Also Published As

Publication number Publication date
DE112016000811A5 (de) 2017-11-02
WO2016131437A2 (fr) 2016-08-25
WO2016131437A3 (fr) 2016-09-29

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