EP3006123B1 - Verfahren und vorrichtung von stahlzwischenprodukten - Google Patents

Verfahren und vorrichtung von stahlzwischenprodukten Download PDF

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Publication number
EP3006123B1
EP3006123B1 EP15189247.8A EP15189247A EP3006123B1 EP 3006123 B1 EP3006123 B1 EP 3006123B1 EP 15189247 A EP15189247 A EP 15189247A EP 3006123 B1 EP3006123 B1 EP 3006123B1
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EP
European Patent Office
Prior art keywords
bloom
rolling mill
strands
rollers
cantilever
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EP15189247.8A
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English (en)
French (fr)
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EP3006123A1 (de
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David Teng Pong
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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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/12—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process axes being arranged in different planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/46—Roll speed or drive motor control
    • 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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • 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
    • B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening strands
    • 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
    • B22D11/142—Plants for continuous casting for curved casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/04—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/005—Cantilevered roll stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B2001/022—Blooms or billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/006—Multiple strand rolling mills; Mill stands with multiple caliber rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/06—Cassettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/10—Cross-sectional area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/07—Adaptation of roll neck bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
    • B21B35/04—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills each stand having its own motor or motors

Definitions

  • the present invention relates generally to methods and apparatuses for producing steel intermediate products.
  • the present invention relates to methods and apparatuses for in-line rolling of billets from continuously cast blooms.
  • a method and an apparatus in accordance with the preambles of claim 1 and claim 13 respectively is e.g. known from document US 2002/189075 A1 .
  • Rolling mills are installed for producing finished steel products, for example, for local markets in developing world countries and near markets for finished steel products, such as mild steel bar for use in civil construction.
  • these rolling mills will typically rely on importing steel billets from other countries that have a larger steelmaking capacity, to finish for their local markets. This is prevalent in many developing world countries because even local production of steel intermediate products from recycled steel is not possible due to the scarcity of steel scrap generated locally, and the difficulties with providing a reliable and cost-effective supply of electrical power to operate an electric arc furnace. Therefore, imported billets are 're-rolled' to produce the finished steel products.
  • the present invention provides a method of continuously producing steel intermediate products as claimed in claim 1.
  • excess steel bloom production by a large capacity continuous steel casting machine can be directly converted to billets by an in-line hot rolling process, without the need for additional heating or reheating of the blooms before rolling.
  • a separate billet rolling mill to produce re-rollable billets from the continuously cast blooms, and as a result, this additional investment, double handling, extra manning, heating and rolling losses that would result from rolling reheated bloom lengths and which would make such billet production uneconomical, is avoided.
  • large capacity multi-strand continuous casting machines are enabled to efficiently directly produce re-rollable billets by an in-line rolling process at the same time as producing larger blooms.
  • large capacity steel intermediate production facilities can export surplus production for use in re-rolling mills in countries that rely on importing steel billets.
  • the cast bloom strands fed in-line to the rolling mills are still hot from the continuous casting, and wherein no additional reheating of the blooms is performed between the casting and hot rolling.
  • the bloom strands have a cross sectional area above 230 square centimetres, and preferably the rolled billets have a cross sectional area below 230 square centimetres. Blooms typically are dimensioned above 150mm square (and up to 400mm square), the rolled billets typically are dimensioned below 150mm square.
  • the method further comprises: feeding the bloom strands through respective straightening rollers; operating each rolling mill at a speed based on a reference speed of the straightening rollers of the particular bloom strand fed to that rolling mill.
  • Using the speed of the individual straightening rollers for each continuously cast strand as a reference speed for the rolling speed of the rolling mill for that strand in this way enables the billets to be reliably hot rolled and the material flow balance to be maintained on a strand-by-strand basis.
  • cantilevered rolling mill stands allows the rolling of each bloom strand to not interfere with the adjacent strand of the multi-strand bloom casting machine, and it allows the length of the rolling mill across all stands to be kept low and to be positioned as close as possible to the exit of the strands from the continuous casting machine, enabling the blooms to be rolled while still hot from the casting process, and before they have cooled.
  • Conventional rolling mills in which the rollers are "simply supported” with bearing supports at both ends of the rolling axis, would be too large to fit between the adjacent strands on exit from the continuous casting machine, and so would only be usable to roll the cast blooms if the strands were spaced further apart on exit from the continuous casting machine or moved further apart somehow by rollers. This is simply not practical.
  • the drive mechanism and motor for each cantilever rolling mill stand is arranged outside the outermost strands produced by the continuous casting. In this way the bulky drive mechanism and motor components will not occupy space immediately above or below the bloom strands, such that the cast blooms are not interfered with.
  • the drive mechanism and/or motor for the or each cantilever rolling mill stand is connected to the respective cantilever rolling mill stand by respective long shafts arranged so as to distance the drive mechanism and/or motor from the hot blooms.
  • each of the rolls for a given cantilever rolling mill stand is driven by an individual motor.
  • the angle of the axes of the subsequent rolling mill stands is set at 90 degrees to each other. Arranging the cantilevered rolling mill stands in this way allows the rollers to access the bloom strands from away to the sides of the bloom, reducing the extent to which the rollers and the rolling mill housing interfere with the space immediately surrounding the cast blooms. Further, by alternating the axes of the rollers in this way, the rolling mill housings and stands can be offset from each other and/or positioned alternately above and below the cast blooms allowing the rollers to be positioned close to each other axially along the strand, allowing the rolling mill to occupy a short length along the strand such that the cast strand can be rolled at a uniform temperature without significant cooling between the rolling mill stands.
  • each rolling mill comprises at least two, or preferably at least four, in-line cantilever rolling mill stands arranged to roll increasingly small billet sizes.
  • each rolling mill stand will work on two faces of the bloom (for example, if the bloom is a 240mm by 240mm square cross section bloom) and the next rolling mill stand will work on the opposite two faces, rolling the cast blooms into smaller size billets.
  • the cantilever stands may be moved out of the line of the bloom casting without interrupting the casting process.
  • the rolls of cantilever stands are separated from each another to at least a distance wide enough for the rolling mill stands to clear the bloom and be moved out of the bloom casting line.
  • the housing for the bearing supports for each cantilever rolling mill stand is configured as a replaceable cassette, for example, that interfaces with the motor and drive mechanism. This will facilitate a quick changing of the rolls, for example when the rolls become worn, reducing downtime.
  • the rolling mill and each rolling mill stand is selectably operable or engageable with the cast blooms, allowing the bloom strands to be selectably hot rolled into billets optionally of varying sizes.
  • This allows the output of the continuous casting machine to be selectably variable in size, allowing production to adapt readily to demand, for example, fluctuations in demand in domestic and/or export markets for cast blooms and (rolled) billets.
  • protective cooling or insulating jackets are provided around the housing for the bearing supports and/or the motor and/or drive mechanism for each cantilever rolling mill stand.
  • only one or both of the outermost strands of the plurality of continuously cast bloom strands is hot rolled into a billet.
  • the degree to which the rolling mill interferes with the space around the cast bloom strands, and the degree to which the steel mill needs to be re-engineered to accommodate the rolling mill is minimized.
  • the requirements for the rolling mill stands are less stringent as the space requirements for rolling only the outermost strand(s) (due to the space availability to the sides of the strands) are less than those required for the innermost strands.
  • the present invention provides apparatus as claimed in claim 13.
  • the continuous casting apparatus comprises a tundish arranged to collect liquid steel and provide said liquid steel to plural moulds arranged side by side to continuously produce plural bloom strands.
  • the continuous casting apparatus is configured to operate in the methods in accordance with the embodiments described above.
  • a continuous casting machine 110 comprises a ladle 112, tundish 114, multiple permanent moulds 116 for forming strands 118 and straightening rollers 120 for straightening the strands.
  • Molten steel is tapped into the ladle 112 from one or more furnaces (not shown).
  • the ladle 112 has at its bottom a pipe opening which is arranged above and drains liquid steel into a holding bath or tundish 114.
  • the tundish 114 acts as a buffer reservoir and has shrouds or pipe openings into the permanent moulds 116.
  • the liquid steel drains from the tundish 114 into the permanent moulds 116 which are shaped and liquid cooled to form a solidified exterior casing for the strands 118 that are formed by the hardened steel dropping due to gravity from the open bottom of the permanent moulds 116.
  • each of the continuously cast strands 118 is then passed through sequences of pairs of individual straightening rollers that guide the strands to extend in a horizontal direction and straighten the strands as they move along between the rollers and cool and further solidify.
  • the continuous casting machine 110, and the permanent moulds 116 in particular are configured such that the strands 118 are formed as blooms having a cross sectional area above 230 square centimetres, in this case 240mm by 240mm square.
  • the continuous casting machine 110 has a high production capacity of, say 2 million tonnes a year, with a production speed of at least 4 metres per minute, and can operate continuously for a number of years of production between servicing.
  • this production capacity of continuously cast blooms exceeds demand, for example in the domestic market, which would lead to an increase in inventory of cast blooms
  • the apparatus 100 operates to hot roll one or more of the bloom strands 118 into billets 140 by operation of the in-line rolling mills 150, which can for example be exported to developing world markets for direct use in re-rolling mills.
  • the rolled billets are formed to have a cross sectional area below 230 square centimetres, in this case 150mm by 150mm square.
  • the apparatus 100 is arranged such that the cast bloom strands 118 fed in-line to the rolling mills 140 in use are still hot from the continuous casting. No apparatus is provided arranged to perform additional reheating of the blooms between the casting and hot rolling.
  • the in-line rolling mills 150 comprise a plurality of cantilever rolling mill stands 152 in which the bearing supports for the rollers 154 of each stand support the rollers at only one end.
  • the drive mechanism and motor 156 for each cantilever rolling mill stand 152 is arranged outside the outermost strands 118 produced by the continuous casting.
  • the drive mechanism and/or motor 156 for the cantilever rolling mill stands 152 can be connected to the respective cantilever rolling mill stand 152 by respective long shafts arranged so as to distance the drive mechanism and/or motor 156 from the hot blooms 118.
  • protective cooling or insulating jackets can be provided around the housing 158 for the bearing supports and/or the motor and/or drive mechanism 156 for each cantilever rolling mill stand 152. Motors may be arranged to individually drive each of the rollers 154 for a given cantilever rolling mill stand 152.
  • the second cantilevered rolling mill stand 152 of each rolling mill is drawn with the drive mechanism and motor 156 and the housing 158 below the strands 118 at floor level.
  • the rolling mills 150 can be arranged such that the drive mechanism and motor 156 and the housing 158 of the cantilevered rolling mill stands 152 are never positioned underneath the strands 118 by, for example, positioning certain components above floor level.
  • the housing 158 for the bearing supports for each cantilever rolling mill stand 152 is configured as a replaceable cassette, for facilitating a quick changing of the rolls, e.g. when worn, reducing down time.
  • Each rolling mill 150 (for each strand) comprises two in-line cantilever rolling mill stands 152. In other embodiments, more than two or preferably at least four, cantilever rolling mill stands are provided, arranged to roll increasingly small billet sizes.
  • the angle of the axes of the rollers of the first cantilever rolling mill stand for a given bloom is set at 45 degrees to the top surface of the bloom.
  • the angle of the axes of the subsequent rolling mill stands is set at 90 degrees to each other.
  • Each rolling mill 150 is configured to operate at a speed based on a reference speed of the straightening rollers of the particular bloom strand 118 fed to that rolling mill. This ensures a balance to the flow of material through the rolling mills 150.
  • both of the outermost strands of the plurality of continuously cast bloom strands 118 is hot rolled into a billet.
  • the in-line rolling mills 150 are in position and operate continuously such that rolled billets are always produced.
  • the rolling mills 150 can be selectively engaged such that billet production can be responsive to variation in demand for cast bloomed and rolled billets for re-rolling. Therefore the cantilever stands may be moved out of the line of the bloom casting without interrupting the casting process.
  • the rollers 154 of the cantilever stands are separated from each another to at least a distance wide enough for the rolling mill stands 150 to clear the bloom and be moved out of the bloom casting line.
  • the invention is applicable not just to square blooms, but also to round blooms for which appropriate permanent moulds and straightening rollers need to be provided.
  • the roll pass section then needs to be adjusted accordingly to produce billets of the desired square (or other) cross section.
  • the strands are cast in a process of sequence continuous casting.
  • This process enables different temperatures of liquid steel to be continuous-continuously casted, i.e. without interruption. This process increases productivity by eliminating the need to prepare for starting a new individual casting process each time.
  • adjustable cantilevered rolling mill stands the present invention allows for the blooms width to be adjusted and liquid steel of different temperatures to be cast continuously. Steel of different temperatures may be utilised by replacing the tundish comprising the steel of a different temperature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)

Claims (14)

  1. Verfahren zur Fließfertigung von Stahlzwischenprodukten, wobei das Verfahren folgendes umfasst:
    Gießen von Stahl in flüssiger Form in mehrere Formen (116), um mittels Fließfertigung mehrere vorgewalzte Stränge (118) zu erzeugen; und
    Zuführen eines oder mehrerer der vorgewalzten Stränge der Reihe nach in entsprechende Walzwerke (150), die so gestaltet sind, dass sie selektiv eingreifen können, um die eingeführten stranggegossenen vorgewalzten Stränge warmzuwalzen, um Walzblöcke zu erzeugen;
    dadurch gekennzeichnet, dass
    die Walzwerke (150) zwei oder mehr Auslegerwalzwerke (152) umfassen, wobei Lagerblöcke für die Walzen (154) jedes Werks die Walzen nur an einem Ende stützen, wobei das Verfahren ferner dadurch gekennzeichnet ist, dass der Winkel der Achsen der Walzen des ersten Auslegerwalzwerks für einen gegebenen vorgewalzten Strang in einem Winkel von 45 Grad zu der oberen Oberfläche des vorgewalzten Strangs angeordnet ist, und wobei der Winkel der Achsen der folgenden Walzwerke (152) in einem Winkel von 90 Grad zueinander angeordnet ist.
  2. Verfahren nach Anspruch 1, wobei die gegossenen vorgewalzten Stränge (118), die den Walzwerken (150) der Reihe nach zugeführt werden, noch von dem Stranggießen heiß sind, und wobei keine zusätzliche neuerliche Erwärmung der vorgewalzten Stränge zwischen dem Gießen und dem Warmwalzen vorgenommen wird.
  3. Verfahren nach Anspruch 1 oder 2, wobei die vorgewalzten Stränge (118) eine Querschnittsfläche von über 230 Quadratzentimetern aufweisen, und wobei die Walzblöcke eine Querschnittsfläche von weniger als 230 Quadratzentimetern aufweisen.
  4. Verfahren nach einem der Ansprüche 1, 2 oder 3, wobei das Verfahren ferner folgendes umfasst:
    Führen der vorgewalzten Stränge (118) durch entsprechende Richtwalzen (120);
    Betreiben jedes Walzwerks (150) mit einer Geschwindigkeit auf der Basis einer Bezugsgeschwindigkeit der Richtwalzen des jeweiligen vorgewalzten Strangs, der diesem Walzwerk zugeführt wird.
  5. Verfahren nach einem der vorstehenden Ansprüche, wobei ein Antriebsmechanismus und ein Motor (156) für jedes Auslegerwalzwerk (152) außerhalb der durch das Stranggießen erzeugten äußersten Stränge angeordnet ist.
  6. Verfahren nach einem der vorstehenden Ansprüche, wobei jede der Walzen (154) für ein jeweiliges Auslegerwalzwerk (152) durch einen eigenen Motor (156) angetrieben wird.
  7. Verfahren nach einem der vorstehenden Ansprüche, wobei jedes Walzwerk (150) wenigstens zwei oder vorzugsweise wenigstens vier in Reihe vorgesehene Auslegerwalzwerke (152) umfasst, die so angeordnet sind, dass sie zunehmend kleinere Walzblockgrößen walzen.
  8. Verfahren nach einem der vorstehenden Ansprüche, wobei ein Gehäuse (158) für die Lagerblöcke für jedes Auslegerwalzwerk (152) als eine austauschbare Kassette gestaltet ist.
  9. Verfahren nach einem der vorstehenden Ansprüche, wobei schützende kühlende oder isolierende Ummantelungen um ein Gehäuse (158) für die Lagerblöcke und/oder ein Motor und/oder ein Antriebsmechanismus (156) für jedes Auslegerwalzwerk (152) vorgesehen sind.
  10. Verfahren nach einem der vorstehenden Ansprüche, wobei nur einer oder beide der äußersten Stränge der Mehrzahl stranggegossener vorgewalzter Stränge 8118) zu einem Walzblock warmgewalzt wird bzw. werden, und wobei wenigstens ein innerster vorgewalzter Strang vorgesehen ist.
  11. Verfahren nach einem der vorstehenden Ansprüche, wobei die Mehrzahl vorgewalzter Stränge (118) in einem Verfahren des sequentiellen Stranggießens gegossen werden.
  12. Verfahren nach einem der vorstehenden Ansprüche, wobei die Walzen (154) der Auslegerwalzwerke (152) wenigstens in einem Zwischenabstand voneinander getrennt sind, der breit genug ist, so dass die Auslegerwalzwerke (152) den vorgewalzten Strang passieren und aus der Gussanlage für die vorgewalzten Stränge bewegt werden kann.
  13. Vorrichtung (100) zur Fließfertigung von Stahlzwischenprodukten, wobei die Vorrichtung folgendes umfasst:
    eine Stranggussvorrichtung, die so angeordnet ist, dass sie bei Verwendung mittels Fließfertigung mehrere vorgewalzte Stränge (118) erzeugt; und
    ein oder mehrere in Reihe angeordnete Walzwerke (150), die so angeordnet sind, dass sie selektiv eingreifen können, um bei Verwendung einen der stranggegossenen vorgewalzten Stränge (118) zu empfangen und warmzuwalzen, um Walzblöcke zu erzeugen;
    dadurch gekennzeichnet, dass
    die Walzwerke (150) zwei oder mehr Auslegerwalzwerke (152) umfassen, wobei Lagerblöcke für die Walzen (154) jedes Werks die Walzen (154) nur an einem Ende stützen, wobei die Vorrichtung ferner dadurch gekennzeichnet ist, dass der Winkel der Achsen der Walzen (154) des ersten Auslegerwalzwerks (152) für einen gegebenen vorgewalzten Strang in einem Winkel von 45 Grad zu der oberen Oberfläche des vorgewalzten Strangs angeordnet ist, und wobei der Winkel der Achsen der folgenden Walzwerke (152) in einem Winkel von 90 Grad zueinander angeordnet ist.
  14. Vorrichtung (100) nach Anspruch 13, wobei die Stranggussvorrichtung eine Gießwanne (114) umfasst, die so angeordnet ist, dass sie Stahl in flüssiger Form sammelt und den genannten Stahl in flüssiger Form an mehrere Formen (116) bereitstellt, die nebeneinander angeordnet sind, so dass mehrere vorgewalzte Stränge (118) mittels Fließfertigung erzeugt werden.
EP15189247.8A 2014-10-10 2015-10-09 Verfahren und vorrichtung von stahlzwischenprodukten Not-in-force EP3006123B1 (de)

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GB1417999.8A GB2531073A (en) 2014-10-10 2014-10-10 Method and apparatus for producing steel intermediate products
GB1517278.6A GB2531164B (en) 2014-10-10 2015-09-30 Method and apparatus for producing steel intermediate products

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CN107552750B (zh) * 2017-08-07 2023-05-23 中冶连铸技术工程有限责任公司 可生产超大断面异型坯或板坯的多流连铸机及生产方法
CN110039019B (zh) * 2019-04-18 2021-06-18 河南科技大学 一种多路并联铸轧方法、铸轧系统及铸轧用熔液供料装置
CN114713631B (zh) * 2022-05-18 2024-01-12 首钢长治钢铁有限公司 一种轧制生产系统集成

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GB1288934A (de) * 1969-05-05 1972-09-13
US3945234A (en) * 1975-01-02 1976-03-23 Rolf Steinbock Tandem rolling mill arrangement
JPS5514134A (en) * 1978-07-14 1980-01-31 Toshiba Corp Producing apparatus of steel bar product
JPS55112105A (en) * 1979-02-20 1980-08-29 Toshiba Corp Manufacturing apparatus for steel bar
DD158312A3 (de) * 1980-12-11 1983-01-12 Peter Kletzin Innen-und aussenverzahnung zum antrieb eines spindellosen walzgeruestes
ITPN20010012A1 (it) * 2001-02-15 2002-08-16 Sms Demag Aktiengesellshaft Blocco compatto di laminazione per due linee parallele.
ITUD20010098A1 (it) * 2001-05-25 2002-11-25 Sms Demag Aktiengesellshaft Impianto perfezionato di colata continua e laminazione a caldo per la produzione in parallelo diversificata di barre o fili
DE102009050710B4 (de) * 2009-10-26 2016-08-04 Sms Group Gmbh Drahtwalzgerüst mit Einzelantrieb
ES2734851T3 (es) * 2010-07-26 2019-12-12 Primetals Tech Italy S R L Aparato y método para la producción de productos alargados de metal
CN103480647B (zh) * 2013-09-18 2016-03-23 陕西钢铁集团有限公司 一种无加热低温直接轧制小方坯生产钢筋的装置及其生产方法

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PL3006123T3 (pl) 2018-01-31
US20160101464A1 (en) 2016-04-14
WO2016055813A1 (en) 2016-04-14
PT3006123T (pt) 2017-08-28
HK1220164A1 (zh) 2017-04-28
GB2531164A (en) 2016-04-13
EP3006123A1 (de) 2016-04-13
GB2531164B (en) 2016-10-12
GB2531073A (en) 2016-04-13
GB201417999D0 (en) 2014-11-26
GB201517278D0 (en) 2015-11-11
CN105499271A (zh) 2016-04-20
CN105499271B (zh) 2018-04-20
ES2637824T3 (es) 2017-10-17

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