EP0862661B1 - Verfahren und vorrichtung zum erzeugen von dünnen stahlbändern - Google Patents
Verfahren und vorrichtung zum erzeugen von dünnen stahlbändern Download PDFInfo
- Publication number
- EP0862661B1 EP0862661B1 EP96946165A EP96946165A EP0862661B1 EP 0862661 B1 EP0862661 B1 EP 0862661B1 EP 96946165 A EP96946165 A EP 96946165A EP 96946165 A EP96946165 A EP 96946165A EP 0862661 B1 EP0862661 B1 EP 0862661B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- carrier band
- temperature
- band
- crystallised
- 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 16
- 229910052751 metal Inorganic materials 0.000 title abstract description 23
- 239000002184 metal Substances 0.000 title abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 14
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000000161 steel melt Substances 0.000 claims 10
- 229910001566 austenite Inorganic materials 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 239000011162 core material Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 210000001035 gastrointestinal tract Anatomy 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000005298 paramagnetic effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002907 paramagnetic material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- 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
- B22D11/008—Continuous casting of metals, i.e. casting in indefinite lengths of clad ingots, i.e. the molten metal being cast against a continuous strip forming part of the cast product
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0035—Means for continuously moving substrate through, into or out of the bath
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
- C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B2001/228—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 plates, strips, bands or sheets of indefinite length skin pass rolling or temper rolling
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/383—Cladded or coated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
- B21B39/18—Switches for directing work in metal-rolling mills or trains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
Definitions
- the invention relates to a method for producing thin steel strips, in which a carrier tape made of a steel material in contact with a molten steel brought and this is brought to crystallize, and a device for Implementation of the method with a bottom opening metallurgical vessel in which there is a molten steel through which a Carrier tape is feasible, and with rollers for feeding the carrier tape and Removal of the crystallized steel strip.
- Thin metal strands of steel are regularly produced as cold strips. For now about 60% of the cold-rolled products are coated, in particular the corrosion to avoid or reduce the steel in use.
- This steel volume in the European Union is approximately 30 million tons of steel, with 16 million tons of hot-dip galvanized and electrolytically galvanized strips.
- the production volume of the galvanized strips has increased continuously, here especially in the area of application of the automotive industry.
- the scarce zinc resources which is about 20 to 30 years if from the current one Production volume and the developed and known reserves becomes.
- the recycling of the zinc requires a separate recording of the galvanized Steel scrap, extraction via the dust phase and enrichment e.g. during melting in the electric furnace.
- EP 0311602 B1 proposes a method and a device in which an uncooled, cleaned metal long product of low energy potential is brought into contact with a metal melt and this is brought to crystallize.
- An economical and metallurgically usable product is achieved in that a metal long product selected with wall thicknesses of 0.1 to 1.4 mm is produced in accordance with the maximum permissible contact time in the metal melt, a metal strand with an approximately 6 to 10 times the total strand thickness.
- the strand here consists of the metal profile and crystals and melt material from the metal melt deposited on it without phase boundaries.
- the coating of metal wire is known for example from US-A-4169426 and EP-A-0329611.
- the invention has set itself the goal of making a steel strip with simple means Produce composite material that is as thin, closed and am Carrier profile has a firmly adhering coating.
- the invention achieves this goal by the characterizing features of Process claim 1 and device claim 10.
- the layer thickness is set to 20 to 2% of the strand thickness, depending on the material and application.
- Steel strips are manufactured in which one of the materials used is a stainless steel, an austenitic or ferritic steel.
- a carrier tape which is the core of the steel tape, is made from a deep-drawing grade with a thickness of 1 to 10 mm.
- This carrier tape is coated on both sides with a coating made of austenitic or ferritic stainless steel with a layer thickness that is at least so strong that reliable corrosion protection is provided under the conditions of use in the automotive industry.
- Such a steel strip not only has good welding of both materials, it is also characterized by good material properties, deep-drawing properties and high corrosion resistance.
- a steel band When used in the electrical industry, a steel band is manufactured, the one Has ferromagnetic silicon-containing carrier tape as the core and with a paramagnetic material is coated or a paramagnetic core with has a coating of a ferromagnetic silicon-containing steel.
- the temperature of the carrier tape, the temperature of the molten steel and the dwell time of the carrier tape in the molten steel according to the desired layer thickness can be fed to the steel bath at room temperature or preheated.
- a particularly economical procedure, especially because of the higher Production volume is, for example, a carrier tape with a thickness of 3 mm, which in an oven with an inert protective gas atmosphere to a temperature of around 870 ° C preheated, placed in an inversion vessel and with a melt of stainless Stainless steel about 2 sec. is brought into contact. Following the one in the bathroom Crystallization of the melt on the carrier tape, consisting of core, sheet and Coating in an inert protective gas atmosphere using a smoothing stitch a total thickness of 3.5 mm smoothed. Then the product can either be in inert inert gas atmosphere a hot rolling mill to produce a hot rolled intermediate thickness are fed so that the hot strip either can be used directly as a finished hot strip or directly in a cold rolling mill is fed.
- the carrier tape which is introduced into the inversion vessel, is turned on before it enters paying special attention to its temperature.
- a heating oven for example a Continuous annealing furnace, insofar as a carrier strip with a low temperature is fed, or if a system is connected upstream of the inversion casting device, at the carrier tape has a higher than desired temperature, a Cooling device used.
- the steel strips produced from high-melting composite materials, rustproof / unalloyed or ferro- / paramagnetic, represent new materials with previous ones technically not representable properties.
- the transport protection of the coated tapes is - relative to the regular - easy.
- Figure 1 shows the diagram of a device for producing thin Steel strands with the inversion casting vessel 11, in the bottom of which an opening 12 is provided, through which a carrier tape M is guided.
- the carrier tape M is held by rollers 31 which are connected to a drive 27.
- the the Steel tape F leaving the inversion casting vessel is drawn off via rollers 32 which are driven by a drive 28.
- the steel strip F leaving the melt S is encased in a housing 13, to which a pump 14 is connected, with the gas preferably nitrogen in the Interior of the housing 13 is promoted.
- the carrier tape Before it enters the inversion casting vessel 11, the carrier tape is passed through a Device 20 for influencing the strip temperature.
- a carrier tape M can be fed in via an insertion switch 36 upstream storage station 50 is stored.
- This cold carrier tape will passed through the temperature device 20 and here, as far as an annealing furnace 21 in Insert is to be warmed before entering the inversion casting vessel. Depending on The temperatures between room temperature and approx 870 ° C lie.
- the current temperature of the carrier tape M is determined by temperature sensors 22 and 23, which are arranged at the entrance and exit of the temperature device, one Measuring and control component 25 supplied. This component 25 is also with a Temperature sensor 24 connected, which measures the temperature of the melt S. To the Measuring and control component is connected to a control unit 26 which is connected to the drives 27 and 28 of the rollers 31 and 32 is connected in terms of control technology.
- a carrier tape can also be used, which is located in an upstream Inversion casting device 40 was produced.
- This carrier tape M as far as its temperature is higher than desired, supplied to the temperature device 20, which is designed here as a cooling device 29.
- the finished steel strip F is 35 fed to a rolling mill 60 in one step and there in a roll stand 61, for example smoothing, and then one Finishing system 70 fed.
- FIG. 2 shows schematically the effect of preheating the carrier tape listed. It turns out that the immersion time when the carrier tape is preheated is significantly shorter. A shorter dive time also means a longer one Production volume.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
- Coating With Molten Metal (AREA)
- Metal Rolling (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Description
Das Beschichten von Metalldraht ist beispielsweise aus der US -A- 4169426 sowie der EP-A-0329611 bekannt.
Bei der Verwendung in der Autoindustrie werden beispielsweise ein Trägerband, das den Kern des Stahlbandes darstellt, aus einer Tiefziehgüte hergestellt mit einer Dicke von 1 bis 10 mm. Dieses Trägerband wird beidseitig mit einer Beschichtung aus austenitischem oder ferritischem Edelstahl mit einer Schichtdicke versehen, die mindestens so stark ist, daß ein sicherer Korrosionsschutz unter den Einsatzbedingungen der Automobilindustrie gegeben ist. Ein solches Stahlband weist nicht nur eine gute Verschweißung beider Werkstoffe auf, es zeichnet sich auch durch gute Werkstoffeigenschaften sowie Tiefzieheigenschaften und eine hohe Korrosionsbeständigkeit aus.
- gute Verschweißung des eingesetzten Oberflächenwerkstoffes mit dem Kernwerkstoff
- gute Zugfestigkeit, gutes Dehnungsverhalten des Gesamtstranges, die primär durch die mechanischen Eigenschaften des Kernwerkstoffes bestimmt werden
- gutes Streckgrenzenverhalten ohne Ausbildung einer Streckgrenzenehnung durch die Korsettwirkung des Rostfrei-Stahles auf die weiche Tiefziehgüte des Kerns
- gute Tiefzieheigenschaften bei hochanteiliger Verwendung eines Tiefziehstahles als Kernmaterial
- hohe Korrosionsfestigkeit bei einer Beschichtung mit austenitischem oder ferritischem Edelstahl
- gute Recyclierfähigkeit, da der Schrott unmittelbar zur Erzeugung von rostfreien Stählen eingesetzt werden kann. Die teuren Legierungselemente verbleiben somit unmittelbar im Werkstoffkreislauf. "Problemelemente" wie Zn oder Sn werden nicht eingebracht.
- Figur 1
- Das Schema der Einrichtung zum Erzeugen von dünnen Stahlbändern
- Figur 2
- Die Abhängigkeit der Auswirkung des Vorwärmens auf die Gesamtbanddicke bezogen auf die Tauchzeit des Trägerbandes.
- 10
- Metallurgisches Gefäß
- 11
- Inversionsgießgefäß
- 12
- Bodenöffnung
- 13
- Einhausung
- 14
- Pumpe für Gas
- 21
- Glühofen
- 22, 23, 24
- Temperaturfühler
- 25
- Meß- und Regelbautei
- 26
- Steuergerät
- 27, 28
- Rollenaritrieb
- 29
- Kühleinrichtung
- 31
- Rollenzufuhr
- 32
- Rollenabfuhr
- 35
- Weiche Abfuhr
- 36
- Weiche Zufuhr
- 40
- Vorgeschaltetes Inversionsgießgefäß
- 50
- Vorgeschaltete Bevorratungsstation
- 60
- Walzwerk
- 61
- Walzgerüst
- 70
- Fertigverarbeitungsanlage
Claims (16)
- Verfahren zum Erzeugen von dünnen Stahlbändern, bei dem ein Trägerband aus einem Stahlwerkstoff mit einer Stahlschmelze in Berührung und diese zum Ankristallisieren gebracht wird,
dadurch gekennzeichnet, dass sich die Werkstoffe des Trägerbandes und der Stahlschmelze unterscheiden, wobei einer der Werkstoffe ein rostfreier Stahl und der andere Werkstoff ein tiefziehfähiger Kohlenstoffstahl ist und die Temperatur des Trägerbandes, die Temperatur der Stahlschmelze sowie die Verweilzeit des Trägerbandes in der Stahlschmelze in der Weise eingestellt werden, dass die Stahlschmelze in einer Schichtdicke D aufkristallisiert, die 20 % bis 2 % der Dicke des Trägerbandes beträgt und
dass das Trägerband mit der ankristallisierten Stahlschmelze auf eine geringere Dicke gewalzt wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass das Trägerband eine Banddicke zwischen 1 bis 10 mm aufweist. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß der Werkstoff des Trägerbandes ein austenitischer oder ferritischer Stahl ist und der Werkstoff der Schmelze ein rostfreier Stahl ist. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass der Werkstoff des Trägerbandes ein siliziumhaltiger Kohlenstoff-Stahl ist mit einem Siliziumgehalt kleiner 10 %. - Verfahren nach einem der o.g. Ansprüche,
dadurch gekennzeichnet, dass das Trägerband in Abhängigkeit von seiner Dicke auf eine Temperatur zwischen Raumtemperatur und maximalen 900°C vorgewärmt wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die Temperatur des Trägerbandes in der Weise eingestellt wird, dass Einfluß auf die Strangtemperatur eines eine vorgeschaltete Inversionsgießanlage verlassendes Trägerbandes genommen wird. - Verfahren nach einem der o.g. Ansprüche,
dadurch gekennzeichnet, dass die Oberfläche der ankristallisierten Stahlschmelze unmittelbar oberhalb des Bades geglättet wird. - Verfahren nach einem der o.g. Ansprüche,
dadurch gekennzeichnet, dass die Oberfläche der ankristallisierten Stahlschmelze nach Verlassen des Schmelzbades gegen Oxidation so lange geschützt wird, bis die Strangtemperatur kleiner 400 °C beträgt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass das Trägerband mit der ankristallisierten Stahlschmelze in einem Warmstich auf 20 % bis 50 % seiner Ausgangsdicke gewalzt wird. - Einrichtung zum Erzeugen von dünnen Stahlbändern, mit einem eine Bodenöffnung aufweisenden Inversionsgießgefäß, in dem sich eine Stahlschmelze befindet, durch die ein Trägerband führbar ist, und mit Rollen zum Zuführen des Trägerbandes sowie zum Abführen des ankristallisierten Stahlbandes, zur Durchführung des Verfahrens nach Anspruch 1,
dadurch gekennzeichnet, dass zur Einflußnahme auf die Temperatur des Trägerbandes (M) eine dem Inversionsgießgefäß (11) vorgeschaltete Temperaturvorrichtung (20) vorgesehen ist, dass in Förderrichtung des Trägerbandes (M) vor und hinter der Temperaturvorrichtung (20) sowie im Inversionsgießgefäß (11) Temperaturfühler (22, 23, 24) vorgesehen sind, die über ein Meß- und Regelbauteil (25) über ein Steuergerät (26) mit Antrieben (27, 28) der Rollen (31, 32) steuerungstechnisch verbunden sind und dass ein Walzgerüst (61) zum Glätten und/oder Walzen des ankristallisierten Stahlbandes (F) vorgesehen ist, das dem Inversionsgießgefäß (11) nachgeschaltet ist. - Einrichtung nach Anspruch 10,
dadurch gekennzeichnet, dass die Temperaturvorrichtung (20) ein Wärmeofen ist, z.B. ein Durchlaufglühofen (21), der das eine vorgeschaltete Bevorratungsstation (50) verlassende Trägerband (M) umhüllt. - Einrichtung nach Anspruch 10,
dadurch gekennzeichnet, dass die Erwärmung der Temperaturvorrichtung (20) durch induktiv oder konduktiv erzeugte Elektrowärme erfolgt. - Einrichtung nach Anspruch 10,
dadurch gekennzeichnet, dass die Temperaturvorrichtung (20) eine Kühleinrichtung (29) ist mit Bauteilen, die das eine vorgeschaltete Inversionsgießanlage (40) verlassende Trägerband (M) umhüllt. - Einrichtung nach den Ansprüchen 10 bis 13,
dadurch gekennzeichnet, dass eine das ankristallisierte Stahlband (F) umhüllende Einhausung (13) vorgesehen ist, die dem Inversionsgießgefäß (11) nachgeschaltet ist und in deren Innenraum durch eine Pumpe (14) ein inertes Gas leitbar ist, z.B. Stickstoff. - Einrichtung nach einem der o.g. Ansprüche,
dadurch gekennzeichnet, dass eine Weiche (35) vorgesehen ist, die wahlweise das ankristallisierte Stahlband (F) direkt oder über das Walzgerüst (61) einer Fertigverarbeitungsanlage (70) zuleitet. - Stahlband, erzeugt in einer Einrichtung nach Anspruch 10 und einem Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass auf das Trägerband eine Beschichtung aufkristallisiert ist, deren Schichtdicke zwischen 20 bis 2 % der Trägerbanddicke ist, und dass das Trägerband und die Beschichtung unterschiedlichen Werkstoff aufweisen, wobei ein Werkstoff ein rostfreier Stahl, Ferrit oder Austenit, ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19545259A DE19545259A1 (de) | 1995-11-24 | 1995-11-24 | Verfahren und Vorrichtung zum Erzeugen von dünnen Metallsträngen |
DE19545259 | 1995-11-24 | ||
PCT/DE1996/002279 WO1997018914A2 (de) | 1995-11-24 | 1996-11-19 | Verfahren und vorrichtung zum erzeugen von dünnen metallsträngen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0862661A2 EP0862661A2 (de) | 1998-09-09 |
EP0862661B1 true EP0862661B1 (de) | 2002-07-10 |
Family
ID=7779183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96946165A Expired - Lifetime EP0862661B1 (de) | 1995-11-24 | 1996-11-19 | Verfahren und vorrichtung zum erzeugen von dünnen stahlbändern |
Country Status (7)
Country | Link |
---|---|
US (1) | US6153028A (de) |
EP (1) | EP0862661B1 (de) |
AT (1) | ATE220428T1 (de) |
DE (2) | DE19545259A1 (de) |
ES (1) | ES2175188T3 (de) |
WO (1) | WO1997018914A2 (de) |
ZA (1) | ZA969830B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19731124C1 (de) * | 1997-07-19 | 1999-01-21 | Schloemann Siemag Ag | Verfahren und Vorrichtung zur Erzeugung von beschichtetem Warm- und Kaltband |
US20030109906A1 (en) * | 2001-11-01 | 2003-06-12 | Jackson Streeter | Low level light therapy for the treatment of stroke |
US7303578B2 (en) | 2001-11-01 | 2007-12-04 | Photothera, Inc. | Device and method for providing phototherapy to the brain |
DE10243457B3 (de) * | 2002-09-19 | 2004-04-29 | Sms Demag Ag | Verfahren zum Herstellen von Flachstahl-Produkten mit hoher Magnetisierungsfähigkeit |
US20070036770A1 (en) * | 2005-08-12 | 2007-02-15 | Wagner Darrell O | Biologic device for regulation of gene expression and method therefor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3779056A (en) * | 1971-12-28 | 1973-12-18 | Bethlehem Steel Corp | Method of coating steel wire with aluminum |
CH616351A5 (de) * | 1976-07-20 | 1980-03-31 | Battelle Memorial Institute | |
US4861682A (en) * | 1985-05-29 | 1989-08-29 | Nippon Steel Corporation | Clad steel materials having excellent ductility and corrosion resistance |
WO1987007192A1 (en) * | 1986-05-27 | 1987-12-03 | Mannesmann Aktiengesellschaft | Process and device for producing thin metal bar |
CH675257A5 (de) * | 1988-02-09 | 1990-09-14 | Battelle Memorial Institute | |
DE19509681C1 (de) * | 1995-03-07 | 1996-05-02 | Mannesmann Ag | Verfahren und Anlage zur kontinuierlichen Erzeugung bandförmiger Bleche |
-
1995
- 1995-11-24 DE DE19545259A patent/DE19545259A1/de not_active Withdrawn
-
1996
- 1996-11-19 ES ES96946165T patent/ES2175188T3/es not_active Expired - Lifetime
- 1996-11-19 EP EP96946165A patent/EP0862661B1/de not_active Expired - Lifetime
- 1996-11-19 WO PCT/DE1996/002279 patent/WO1997018914A2/de active IP Right Grant
- 1996-11-19 DE DE59609435T patent/DE59609435D1/de not_active Expired - Fee Related
- 1996-11-19 AT AT96946165T patent/ATE220428T1/de not_active IP Right Cessation
- 1996-11-22 ZA ZA969830A patent/ZA969830B/xx unknown
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1999
- 1999-02-12 US US09/249,905 patent/US6153028A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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US6153028A (en) | 2000-11-28 |
ATE220428T1 (de) | 2002-07-15 |
ZA969830B (en) | 1997-06-23 |
WO1997018914A3 (de) | 1997-07-24 |
EP0862661A2 (de) | 1998-09-09 |
ES2175188T3 (es) | 2002-11-16 |
DE19545259A1 (de) | 1997-05-28 |
WO1997018914A2 (de) | 1997-05-29 |
DE59609435D1 (de) | 2002-08-14 |
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