EP1381482B1 - Procede et dispositif pour produire une matiere de base de coulee continue - Google Patents

Procede et dispositif pour produire une matiere de base de coulee continue Download PDF

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Publication number
EP1381482B1
EP1381482B1 EP02706775A EP02706775A EP1381482B1 EP 1381482 B1 EP1381482 B1 EP 1381482B1 EP 02706775 A EP02706775 A EP 02706775A EP 02706775 A EP02706775 A EP 02706775A EP 1381482 B1 EP1381482 B1 EP 1381482B1
Authority
EP
European Patent Office
Prior art keywords
preliminary
rolling
profile
billet
sections
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.)
Expired - Lifetime
Application number
EP02706775A
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German (de)
English (en)
Other versions
EP1381482A1 (fr
Inventor
Hans Streubel
Jügen LEMKE
Ingo Schuster
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.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1381482A1 publication Critical patent/EP1381482A1/fr
Application granted granted Critical
Publication of EP1381482B1 publication Critical patent/EP1381482B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D11/1206—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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/14—Soft reduction

Definitions

  • the invention relates to a method for producing continuous casting starting material for rolling metal profiles, especially steel profiles in a continuous caster, with cast strands in the block or in another casting profile be poured.
  • the invention also relates to a device for carrying it out of the procedure.
  • the liquid core reduction method known in the prior art provides a mode of operation in which the liquid core strand is of the Exit thickness from the mold of the continuous caster - distributed over several rollers - is reduced to a smaller thickness.
  • the strand solidifies below the wedge-shaped first segment of the strand guide in a conical setting corresponding to the shrinkage of the strand Strand guide.
  • LCR offers the possibility, especially in the case of thin slab caster, in addition to the known adjustment of the format width in the mold also the format thickness during casting according to the rolling program.
  • the reduction the format thickness and the reopening of the strand guide on the Mold exit dimension is possible at any time within a sequence. Doing so the desired strand thickness by means of rollers either via hydraulic cylinders and Stops, or continuously adjusted via position-controlled hydraulic cylinders.
  • both blocks are used in modern profile rolling mills as well as beam blanks used as a preliminary profile.
  • Beam blanks In addition to beams, U profiles, sheet piling and special profiles are also produced.
  • the unpublished patent application with the official file number 100 11 689.2 describes a process for the continuous casting of slabs and in particular of thin slabs, in a continuous caster with one strand guide, extensively adjustable strand guide segments below a mold, especially with pairs of rollers, whereby to reduce Segregations and core porosities of the casting strand in the area of residual solidification is reduced in thickness by adjusting the strand guide segments.
  • the process is known as soft reduction.
  • a strand runs through a soft reduction route, at the start of which he has not yet frozen the end of which, however, is said to be rigid, for which the casting speed represents an essential operating parameter.
  • a reduction in thickness for example for thin slabs between 0.5 and 3 mm / m casting length.
  • EP 0 834 364 A1 describes a method and a device for high-speed continuous casting plants with a strand thickness reduction during solidification, the melt preferably being poured into an oscillating mold and the strand cross section linear over a minimum length of the strand guide immediately below the mold, the so-called casting rolls becomes. There is then a further strand reduction over the rest Strand management, the so-called "sort reduction", up to a maximum of immediately before the final solidification or swamp tip.
  • sort reduction up to a maximum of immediately before the final solidification or swamp tip.
  • EP 0 177 796 B1 discloses a method for guiding and straightening a Casting strand in the straightening and discharge area of a continuous sheet caster, where oppositely arranged rollers by a spring force against the ferrostatic Pressure of the casting strand in a casting process Be kept clear.
  • a casting strand area is increased Strength traced, and as it passes between opposite ones Rolling the respective spring force is reduced by a small additional force.
  • This proposal namely the clear distance or the mouth width via hydraulic cylinders with built-in inductive displacement measurement and servo valves stepless Setting requires a mathematical or metrological determination the location of the swamp tip.
  • Document EP-A-0 655 288 discloses a method of manufacturing Continuous casting material for rolling metal profiles, in particular Steel profiles in a continuous caster, with cast strands in the block or elnem other casting profile and a forming of a cast strand after a mold using axially or radially adjustable Rolling takes place.
  • the forming takes place where the cast strand is hollow, d. H. has no liquid core.
  • the object of the invention based on a new method and a new device for manufacturing of pre-profiles using blocks that are cast close to their final dimensions or beam blanks. It should use a symmetrical or asymmetrical Forming the strand shell in contrast to rolling one much more homogeneous forming of the cast strand can be achieved. Also the production of different pre-profiles for a profile rolling mill Significantly reduce the rolling effort for final profiling in the finishing mill and save additional caliber.
  • the invention provides a method which is in the upper sense of claim 1 type that cast strands below the mold using roller pairs of a strand guide with profiled and preferably axially and / or radially adjustable rollers in a preforming unit subjected to deformation with liquid core (LCS) to pre-profiles become, in a finish rolling process, profiles with definable final dimensions be finish-rolled. Furthermore, according to the invention, a simple and maintenance-friendly strand guidance for a variety of different Strand cross sections created.
  • LCS liquid core
  • an asymmetrical deformation of the strand shell advantageously leads for rolling to a much more homogeneous forming, since the liquid Core does not experience any compressive or tensile stresses.
  • Another advantage of the invention results from the higher number of different Pre-profiles for a profile rolling mill because it reduces the rolling effort and additionally save caliber.
  • asymmetrical A more homogeneous forming is possible during rolling, so that the caliber and valve stress is significantly reduced and the Tool life can be increased.
  • the strand is formed in stages with at least one pair of rollers.
  • the forming can also by other means of engagement, e.g. adjustable profiled runners that have a Run along the given path at the casting speed, lift off, and into the Return to the starting position at a higher speed.
  • the method according to the invention provides that a preliminary profile in the Preform unit is reshaped so that it is in its cross-sectional shape and Mass distribution is similar to the finished profile.
  • a further embodiment of the method according to the invention provides that the profiling of the roles is designed such that their employment as possible results in many pre-profile dimensions.
  • the method according to the invention provides that the forming a cast strand to the pre-profile with one or more pairs of rollers is carried out, the number of which depends on the predeterminable profile cross section directed.
  • a device for producing continuous casting material for the rolling of metal profiles, in particular for the rolling of steel profiles, comprising a continuous casting system with a block or other suitable casting profile mold for carrying out the method according to the invention provides that below the mold, inside or Below the strand guide of the casting strand emerging from the mold, a preforming unit for deforming the strand with a liquid core (LSC, L iquid C ore S haping) into pre-profiles, with at least one pair of rollers with profiled, preferably axially and / or radially adjustable rollers, is arranged , which is followed by at least one roll stand.
  • LSC liquid core
  • Figure 1 namely Fig. 1a to 1c shows work steps in reducing casting cast Continuous casting profiles 4a, 4b, 4c for profiles close to the final dimensions between profile rollers 2a, 3a; 2b, 3b and 2c, 3c.
  • FIG. 2 shows the principle of pre-profiling a casting strand, for example from a Block mold in the passage through the roller pairs 2b / 3b, 2a / 3a.
  • the roles 2, 3 are profiled and press the strand shell against the ferrostatic Internal pressure of the liquid core into a profile, similar to the profile cross section 4.1 in Fig. 3. Because the strand shell is still light compared to the liquid core is deformable, the process is not so much a rolling process, but rather a pushing process.
  • the number of necessary Role pairs are based on the respective profile cross-section. Thereby may the decrease in each pair of rollers should not be so great that damage the strand shell takes place.
  • the principle of pre-profiling is between two pairs of rollers shown purely by way of example.
  • the pair of rollers 2b, 3b which is somewhat smaller in diameter, presses one flat concave groove 4, while the trailing pair of rollers 2a, 3a with something larger Diameter of its profile 9 the concave shape corresponding to the Format 4.1 or 4.2 in Fig. 3 further reformed.
  • the forming area can join a zone of pure strand guidance.
  • the pre-profiling cast Blocks or beam blanks with a liquid core are made in smaller ones Steps, so that one speaks of a liquid core shaping during the preforming can be.
  • Fig. 4 shows an apparatus for producing continuous casting starting material according to the method of operation referred to as liquid core shaping (LCS), comprising a Continuous caster with a block or beam blank mold 5.
  • LCD liquid core shaping
  • a preforming unit 7 with profiled, axial and / or radial adjustable rollers 3, arranged.
  • the rolls 3 form the beam blank 1 in Pass through the pre-forming unit 7 to pre-profiles 4 (see FIG. 3).
  • a self-supporting extruded profile be reached that requires no further strand support.
  • the now guide rollers with appropriate profiles, such as the output profiling rollers 3 of the unit 7, owns.
  • the strand guide segment 6 is smooth, unprofiled rolls 2.
  • Fig. 5 shows the principle of pre-profiling the cast strand 1 in a forming step by means of the rollers 2a, 3a.
  • Lateral guide rollers 8a, 8b give that Flange of the pre-profile the lateral support.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Continuous Casting (AREA)

Claims (12)

  1. Procédé pour produire une matière de base de coulée continue pour le laminage de profilés métalliques, notamment de profilés d'acier, dans une installation de coulée continue, les barres de fonte étant coulées en profil de lingot ou en un autre profil de coulée (1),
    caractérisé en ce que
    ces barres de fonte subissent, sous la lingotière (5), en utilisant des paires de rouleaux d'un guide de barre comportant des rouleaux (2, 3) profilés positionnables de préférence axialement et/ou radialement, dans une unité de préformage (7), un formage avec noyau liquide (LCS) pour obtenir des ébauches de profilés (4) qui sont laminées dans un processus de laminage de finition pour obtenir des profilés à dimensions finales prédéfinissables.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    les barres coulées dans une lingotière à profil de lingot ou de coulée (1) sont déformées par formage avec un noyau liquide (LCS) pour obtenir des ébauches de profilés - préprofilés.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'une ébauche de profilé (4) est déformée dans l'unité de préformage (7) de manière à ce qu'elle soit, par sa forme de section transversale et sa répartition de masse, identique au profilé fini.
  4. Procédé selon la revendication 1, 2 ou 3,
    caractérisé en ce que
    le profilage des rouleaux (3) est conçu de manière à ce que sa définition aboutisse à autant de dimensions d'ébauches de profilés que possible.
  5. Procédé selon l'une quelconque ou plusieurs des revendications 1 à 4,
    caractérisé en ce que
    le formage d'une barre de fonte pour obtenir une ébauche de profilé (4) est effectué à l'aide d'une ou plusieurs paires de rouleaux (3), de préférence suivant des étapes de formage dont le nombre est défini en fonction de la section transversale de profilé (4) respectivement prédéfinissable.
  6. Procédé selon l'une quelconque ou plusieurs des revendications 1 à 5,
    caractérisé en ce qu'une modification de forme du lingot coulé ou du profil de coulée (par exemple ébauche de profilé) (1) avec intervention d'une paire de rouleaux (2, 3) n'est réalisée que dans un ordre de grandeur tel qu'il n'en résulte aucune détérioration de la croûte solidifiée.
  7. Procédé selon l'une quelconque ou plusieurs des revendications 1 à 6,
    caractérisé en ce que
    les paramètres de coulée et/ou de mise en place sont réglés de manière à ce que la barre de fonte soit autoporteuse après l'unité de formage et qu'aucun support de la barre ne soit donc nécessaire.
  8. Procédé selon l'une quelconque ou plusieurs des revendications 1 à 7,
    caractérisé en ce que
    le profil des rouleaux est choisi de manière à ce que la barre de fonte soit autoporteuse après l'unité de préformage.
  9. Procédé selon l'une quelconque ou plusieurs des revendications 1 à 8,
    caractérisé en ce que
    les paramètres de refroidissement avant et/ou dans l'unité de formage sont réglés de manière à ce que le profil de température de la barre de fonte ne soit pas critique pour le formage de la barre.
  10. Procédé selon l'une quelconque ou plusieurs des revendications 1 à 9,
    caractérisé en ce que
    le formage LCS permet de produire les formats d'ébauches de profilés suivants :
    avec une grande épaisseur de traverse et une faible profondeur d'incision, une ébauche de format (4.1) par exemple pour le laminage de profilés en T,
    avec des hauteurs et des largeurs de brides différentes, une ébauche de format (4.2) par exemple pour le laminage de rails,
    avec une épaisseur de traverse augmentée localement, une ébauche de format (4.3) par exemple pour le laminage de profilés cannelés,
    avec une réduction de bride unilatérale, une ébauche de format (4.4) par exemple pour le laminage de profilés en U,
    des lingots à section transversale trapézoïdale (4.6, 4.7) par exemple pour le laminage de rails,
    des lingots à section transversale approximativement en forme de U (4.8) par exemple pour le laminage de palplanches,
    des lingots à section transversale approximativement en forme de M ou de W (4.9) par exemple pour le laminage de palplanches,
    des profilés ronds (4.10) ou des formats ovales (4.11) par exemple pour le laminage d'acier en barres et de fil de fer.
  11. Dispositif pour produire de la matière de base de coulée continue pour le laminage de profilés métalliques, notamment de profilés d'acier, comprenant une installation de coulée continue avec une lingotière à profil de lingot ou de coulée (5) pour la réalisation du procédé selon les revendications 1 à 10,
    caractérisé en ce que,
    sous la lingotière (5), à l'intérieur et en dessous d'un guide de barre de la barre de fonte (1) sortant de la lingotière (5), il est disposé une unité de préformage servant à former la barre avec un noyau liquide (Liquid Core Shaping : LCS) pour obtenir des ébauches de profilés, à l'aide d'au moins une paire de rouleaux (2, 3) composée de rouleaux profilés et pouvant être positionnés axialement et/ou radialement, unité en aval de laquelle est installée au moins une cage de laminage de profilés.
  12. Dispositif selon la revendication 11,
    caractérisé en ce que
    l'unité de préformage (7) ou les rouleaux positionnables (2, 3) sont conçus de manière à être rapidement échangeables dans le but d'une adaptation à d'autres ébauches de profilés (4).
EP02706775A 2001-04-21 2002-03-21 Procede et dispositif pour produire une matiere de base de coulee continue Expired - Lifetime EP1381482B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10119550A DE10119550A1 (de) 2001-04-21 2001-04-21 Verfahren und Vorrichtung zum Herstellen von Stranggu-Vormaterial
DE10119550 2001-04-21
PCT/EP2002/003147 WO2002085559A1 (fr) 2001-04-21 2002-03-21 Procede et dispositif pour produire une matiere de base de coulee continue

Publications (2)

Publication Number Publication Date
EP1381482A1 EP1381482A1 (fr) 2004-01-21
EP1381482B1 true EP1381482B1 (fr) 2004-07-14

Family

ID=7682188

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Application Number Title Priority Date Filing Date
EP02706775A Expired - Lifetime EP1381482B1 (fr) 2001-04-21 2002-03-21 Procede et dispositif pour produire une matiere de base de coulee continue

Country Status (5)

Country Link
EP (1) EP1381482B1 (fr)
AT (1) ATE270934T1 (fr)
DE (2) DE10119550A1 (fr)
TW (1) TW520308B (fr)
WO (1) WO2002085559A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3235579B2 (fr) 2016-04-18 2023-08-30 SMS Group GmbH Dispositif de guidage de barre et procédé destiné à supporter une barre de coulée
DE102017200983A1 (de) 2016-04-18 2017-10-19 Sms Group Gmbh Strangführungseinrichtung und Verfahren zum Stützen eines Gießstrangs
CN110315741B (zh) * 2019-06-27 2021-05-28 上海乔治费歇尔亚大塑料管件制品有限公司 节段式修正pe管件椭圆度的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647377B1 (fr) * 1989-04-06 1993-04-30 Techmetal Promotion Procede et installation de coulee de produits metalliques minces a reduction d'epaisseur sous la lingotiere
DE4138740A1 (de) * 1991-11-26 1993-05-27 Schloemann Siemag Ag Verfahren und vorrichtung zum stranggiessen von brammen oder bloecken
JP2989737B2 (ja) * 1993-11-25 1999-12-13 勝彦 山田 鋼材の連続鋳造法および連続鋳造・圧延法
DE19639297C2 (de) * 1996-09-25 2000-02-03 Schloemann Siemag Ag Verfahren und Vorrichtung für Hochgeschwindigkeits-Stranggießanlagen mit einer Strangdickenreduktion während der Erstarrung
DE10062868A1 (de) * 2000-12-16 2002-06-20 Sms Demag Ag Verfahren zum Giessen und unmittelbar anschliessendem Walzen und eine Vorrichtung zur Stützung, Führung und Verformung eines Metall-, insbesondere eines Stahlstranges

Also Published As

Publication number Publication date
EP1381482A1 (fr) 2004-01-21
TW520308B (en) 2003-02-11
WO2002085559A1 (fr) 2002-10-31
DE10119550A1 (de) 2002-10-24
DE50200636D1 (de) 2004-08-19
ATE270934T1 (de) 2004-07-15

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