EP1381482B1 - Verfahren und vorrichtung zum herstellen von strangguss-vormaterial - Google Patents
Verfahren und vorrichtung zum herstellen von strangguss-vormaterial Download PDFInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000009749 continuous casting Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims description 21
- 230000009467 reduction Effects 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Images
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)
- Continuous Casting (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
- Figur 1
- im Querschnitt gegossene Stranggießprofile mit flüssigem Kern beim Reduzieren zu endabmessungsnahen Profilen;
- Figur 2
- die Umformung eines gegossenen Stranges nach der Erfindung mit mehreren Rollenpaaren,
- Figur 3
- eine Anzahl unterschiedlicher Vorprofile, die aus einem Gußstrang einer Block- oder Beam Blank-Kokille nach der Erfindung herstellbar sind,
- Figur 4
- eine Vorrichtung zur Herstellung von Stranggußvorprofilen entsprechend der Erfindung,
- Figur 5
- das Prinzip der Vorprofilierung in einem Umformschritt.
- Beam Blank-Formate mit großer Stegdicke und geringer Einschnitttiefe zum Walzen von Doppel-T-Profilen (vgl. Format 4.1).
- Beam Blank-Formate mit unterschiedlichen Flanschhöhen und -breiten bspw. zur Schienenwalzung (vgl. Format 4.2),
- Beam Blank-Formate mit örtlich vergrößerter Stegdicke, bspw. zur Walzung von Rillenprofilen (vgl. Format 4.3),
- Beam Blank-Formate mit einseitiger Flanschreduzierung ermöglichen bspw. eine U-Profilwalzung (vgl. Format 4.4),
- Blöcke mit trapezförmigem Querschnitt eignen sich bspw. zur Schienenwalzung (vgl. Format 4.5/4.6 und 4.7),
- Blöcke mit leicht U-förmigem Querschnitt eignen bspw. sich zur Spundwandwalzung (vgl. Format 4.8),
- Blöcke mit leicht M- oder W-förmigem Querschnitt sind ebenfalls zur Spundwandwalzung geeignet (vgl. Format 4.9),
- Rundprofil z.B. für die Stabstahl- und Drahtwalzung (vgl. Format 4.10),
- Ovales Format z.B. für die Stabstahl- und Drahtwalzung (vgl. Format 4.11).
Claims (12)
- Verfahren zum Herstellen von Strangguss-Vormaterial zum Walzen von Metallprofilen, insbesondere von Stahlprofilen in einer Stranggießanlage, wobei Gussstränge im Block- oder in einem sonstigen Gießprofil (1) gegossen werden,
dadurch gekennzeichnet, dass diese Gussstränge unterhalb der Kokille (5) unter Verwendung von Rollenpaaren einer Strangführung mit profilierten und vorzugsweise axial und/oder radial anstellbaren Rollen (2, 3) in einer Vorumform-Einheit (7) einer Verformung mit flüssigem Kern (LCS) zu Vorprofilen (4) unterzogen werden, die in einem Fertigwalzprozess zu Profilen mit vorgebbaren Endabmessungen fertiggewalzt werden. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass in einer Block- oder Gießprofil-Kokille gegossene Stränge (1) durch Verformung mit flüssigem Kern (LCS) zu Beam Blank - Vorprofilen umgeformt werden. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass ein Vorprofil (4) in der Vorumform-Einheit (7) derart umgeformt wird, dass es in seiner Querschnittsform und Massenverteilung dem Fertigprofil ähnlich ist. - Verfahren nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass die Profilierung der Rollen (3) derart ausgebildet wird, dass Ihre Anstellung möglichst viele Vorprofilabmessungen ergibt. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Umformung eines Gussstranges zum Vorprofil (4) mit einem oder mehreren Rollenpaaren (3), vorzugsweise in Umformstufen durchgeführt wird, wobei sich deren Anzahl nach dem jeweils vorgebbaren Profilquerschnitt (4) richtet. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass eine Formänderung des gegossenen Blocks oder des Gießprofils (z. B. Beam Blank) (1) unter Einwirkung eines Rollenpaares (2, 3) nur in einer solchen Größenordnung vorgenommen wird, dass keine Schädigung der Strangschale verursacht wird. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Gieß- und/oder Anstellparameter so eingestellt werden, dass der Gussstrang nach der Vorumform-Einheit selbsttragend ist und damit keine Strangstützung erforderlich ist. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass das Rollenprofil so gewählt wird, dass der Gussstrang nach der Vorumform-Einheit selbsttragend ist. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass die Kühlparameter vor und/oder in der Vorumform-Einheit so eingestellt werden, dass das Temperaturprofil des Gussstranges unkritisch für die Strangformung ist. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass durch LCS-Umformung die folgenden Vorprofilformate erzeugt werdenmit großer Stegdicke und geringer Einschnitttiefe ein Vorformat (4.1) z. B. für die T-Profil-Walzung,mit unterschiedlichen Flanschhöhen und -breiten ein Vorformat (4.2) z. B. für die Schienenwalzung,mit örtlich vergrößerter Stegdicke ein Vorformat (4.3) z. B. für die Walzung von Rillenprofilen,mit einseitiger Flanschreduzierung ein Vorformat (4.4) z. B. für die U-Profil-Walzung,Blöcke mit trapezförmigem Querschnitt (4. 6, 4.7) z. B. für die Schienenwalzung,Blöcke mit etwa U-förmigem Querschnitt (4.8) z. B. für die Spundwandwalzung.Blöcke mit angenähert M- oder W-förmigem Querschnitt (4.9) z. B. für die Spundwandwalzung,Rundprofile (4.10) bzw. ovale Formate (4.11) bspw. für die Stabstahl- und Drahtwalzung. - Vorrichtung zum Herstellen von Strangguss-Vormaterial für das Walzen von Metallprofilen, insbesondere von Stahlprofilen, umfassend eine Stranggießanlage mit einer Block- oder Gießprofil-Kokille (5), zur Durchführung des Verfahrens nach den Ansprüchen 1 bis 10,
dadurch gekennzeichnet, dass unterhalb der Kokille (5), innerhalb oder unterhalb einer Strangführung des aus der Kokille (5) austretenden Gussstranges (1) eine Vorumform-Einheit zur Verformung des-Stranges mit flüssigem Kem (Liquid Core Shaping; LCS) zu Vorprofilen, mit mindestens einem Rollenpaar profilierter sowie axial und/oder radial anstellbarer Rollen (2, 3) angeordnet ist, der mindestens ein Profilwalzgerüst nachgeordnet ist. - Vorrichtung nach Anspruch 11,
dadurch gekennzeichnet, dass die Vorumform-Einheit (7) bzw. die anstellbaren Rollen (2, 3) zwecks Anpassung an andere Vorprofile (4) schnell wechselbar ausgebildet sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10119550 | 2001-04-21 | ||
DE10119550A DE10119550A1 (de) | 2001-04-21 | 2001-04-21 | Verfahren und Vorrichtung zum Herstellen von Stranggu-Vormaterial |
PCT/EP2002/003147 WO2002085559A1 (de) | 2001-04-21 | 2002-03-21 | Verfahren und vorrichtung zum herstellen von strangguss-vormaterial |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1381482A1 EP1381482A1 (de) | 2004-01-21 |
EP1381482B1 true EP1381482B1 (de) | 2004-07-14 |
Family
ID=7682188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02706775A Expired - Lifetime EP1381482B1 (de) | 2001-04-21 | 2002-03-21 | Verfahren und vorrichtung zum herstellen von strangguss-vormaterial |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1381482B1 (de) |
AT (1) | ATE270934T1 (de) |
DE (2) | DE10119550A1 (de) |
TW (1) | TW520308B (de) |
WO (1) | WO2002085559A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017200983A1 (de) | 2016-04-18 | 2017-10-19 | Sms Group Gmbh | Strangführungseinrichtung und Verfahren zum Stützen eines Gießstrangs |
EP3235579B2 (de) | 2016-04-18 | 2023-08-30 | SMS Group GmbH | Strangführungseinrichtung und verfahren zum stützen eines giessstrangs |
CN113147008A (zh) * | 2019-06-27 | 2021-07-23 | 上海乔治费歇尔亚大塑料管件制品有限公司 | 修正pe管件椭圆度的方法 |
Family Cites Families (5)
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 |
-
2001
- 2001-04-21 DE DE10119550A patent/DE10119550A1/de not_active Withdrawn
-
2002
- 2002-03-15 TW TW091104963A patent/TW520308B/zh not_active IP Right Cessation
- 2002-03-21 AT AT02706775T patent/ATE270934T1/de active
- 2002-03-21 DE DE50200636T patent/DE50200636D1/de not_active Expired - Lifetime
- 2002-03-21 EP EP02706775A patent/EP1381482B1/de not_active Expired - Lifetime
- 2002-03-21 WO PCT/EP2002/003147 patent/WO2002085559A1/de not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
TW520308B (en) | 2003-02-11 |
DE10119550A1 (de) | 2002-10-24 |
ATE270934T1 (de) | 2004-07-15 |
EP1381482A1 (de) | 2004-01-21 |
DE50200636D1 (de) | 2004-08-19 |
WO2002085559A1 (de) | 2002-10-31 |
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