EP1134296A2 - Verfahren und Anlage zur Oberflächenbehandlung von warmgewaltzen Bändern oder Blechen aus Metall - Google Patents
Verfahren und Anlage zur Oberflächenbehandlung von warmgewaltzen Bändern oder Blechen aus Metall Download PDFInfo
- Publication number
- EP1134296A2 EP1134296A2 EP01106505A EP01106505A EP1134296A2 EP 1134296 A2 EP1134296 A2 EP 1134296A2 EP 01106505 A EP01106505 A EP 01106505A EP 01106505 A EP01106505 A EP 01106505A EP 1134296 A2 EP1134296 A2 EP 1134296A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling stock
- rolling
- annealing furnace
- continuous annealing
- cooled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 6
- 239000002184 metal Substances 0.000 title claims abstract description 6
- 238000004381 surface treatment Methods 0.000 title claims description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 57
- 238000000137 annealing Methods 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 238000003618 dip coating Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000010405 reoxidation reaction Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000005554 pickling Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot 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
- B21B1/46—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
- 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
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
- B21B2045/006—Heating the product in vacuum or in inert atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/82—Descaling by thermal stresses
Definitions
- the invention relates to a method for the surface treatment of hot-rolled Metal sheets or strips - especially steel - for removal of scale or surface oxides, with the rolling stock over an outlet section is promoted to a reel.
- the material In the production of thin sheets or strips of steel - whether after conventional hot wide strip rolling or when casting and rolling thin slabs - the material is exposed to the air during the forming in the rolling stands as well as on the subsequent runout or the cooling roller table. so that the surface of the rolling stock is inevitably scaled due to contact with the atmospheric oxygen.
- the growth rate as well as the type of scale layers that are formed depend essentially on the alloy composition of the rolled material and the temperature / time cycle used. At temperatures above 570 ° C, for example, the main product in the oxidation of iron is FeO layers, below 570 ° C Fe 2 O 3 and Fe 3 O 4 layers, and oxides of the respective alloy components in alloyed steels.
- the rolled strip usually runs over the cooling roller table with water cooling elements to a reel device, often in the cooling roller table as well the mechanical properties via the temperature selection in the reel device of the band are adjustable.
- the Coiler device influences the temperature on scale formation and setting the mechanical properties in the opposite direction by adjusting the structure behavior.
- the scale layer in the wound coil grows in the area of Band edges stronger than in the because of the better contact to the atmospheric oxygen Middle of the strip, especially at high reel temperatures.
- a disadvantage of the setting The mechanical properties in the hot strip mill is that the Temperature distribution over coil length and width undefined and especially on Coil end and beginning is inhomogeneous. Accordingly, the mechanical Properties of the finished products must be inhomogeneous.
- the coiled, scaled, hot strip of a pickling line is usually used fed to scale and surface oxides by means of passage in salt or remove sulfuric acid media from the belt surface.
- a certain amount Rolling volume to be conveyed by the pickling liquid is necessary.
- the rolling stock volume increases with decreasing hot strip thickness with the same surface throughput from.
- the increase in surface throughput by increasing the Throughput speeds are nevertheless limits with the known pickling techniques set.
- the surface treatment of increasingly thin hot strip pickling plants cannot be followed arbitrarily.
- the invention has for its object a method and a System for the surface treatment of hot-rolled sheets or strips to provide with the above all thin tape with high surface quality homogeneous mechanical properties across belt length and width economically can be manufactured.
- This object is achieved in a generic method in that a first step, the rolling stock immediately after the last shaping step in the rolling mill - i.e. after leaving the finishing stand - homogeneous is cooled to a temperature at the rolling stock width and length at which scaling of the rolling stock is restricted or suppressed, and that in a second step to complete the possibly slightly scaled rolling stock Descaling its surface and setting the desired one mechanical properties subjected to annealing in a reducing atmosphere becomes.
- This annealing preferably takes place with a simultaneous reduction of scale layers in a continuous annealing furnace sealed from the outside atmosphere rather than with a heating, holding and cooling zone, with the initial Heating zone the belt to temperatures in a range of 500-800 ° C, preferably about 550 ° C, is heated.
- the rolling stock is in one the second heating zone directly adjoining the first heating zone Temperatures in the range of 700 to 800 ° warmed.
- the holding zone is mainly used for descaling the surfaces and setting of the desired structure under the influence of time.
- the continuous furnace consists of chambers that are gastight from the air atmosphere and contains reducing gases, preferably 100% hydrogen.
- reducing gases such as carbon monoxide or hydrocarbons and their Mixtures or mixtures of hydrogen and nitrogen are also conceivable.
- hydrogen has two advantages. It reacts with the oxygen the in a continuous furnace by the continuous conveyance of the rolling stock through the introduced air, which cannot be completely avoided, into water. In addition, the decarburization of the rolling stock surface by hydrogen is very low.
- a 100% hydrogen atmosphere is particularly recommended at high or higher alloyed steels, as the alloy metals are usually more sensitive to oxidation are as iron.
- the proposed method can end with the annealing step, whereby Make sure that in the cooling zone of the sealed continuous furnace the rolling stock is already cooled to a temperature of about 100 ° C by one Reoxidation when the rolling stock emerges from the furnace and comes into contact again to prevent atmospheric oxygen.
- the tape is wound up immediately afterwards and is a glow product with a descaled surface and a homogeneous finish Structure available.
- the continuous annealing process can immediately be followed by a surface coating connect, preferably in the form of a hot-dip coating line for coating with zinc or aluminum alloys.
- a surface coating connect preferably in the form of a hot-dip coating line for coating with zinc or aluminum alloys.
- the rolling stock is brought to a temperature in one in the cooling zone Cooled temperature range between 400 to 700 ° C and then immediately the surface treatment subject.
- a suitable one for carrying out the method is also used Attachment proposed.
- Attachment proposed is characterized in that in addition to known Units for rolling strips and sheets require a cooling device is that in the transition between the finishing mill and the run-out section is arranged, and a continuous annealing furnace is provided, which under reducing Atmosphere works.
- Hot-rolled strip can be provided surface-coated without any negative Influence on the structure.
- Figure 1 shows schematically the sequence of the proposed method as well the necessary investment units.
- the two embodiments of the Processes differ in the treatment of the rolling stock in the cooling zone of the continuous annealing furnace, which will be discussed later.
- the method according to the invention can be used in conventional hot wide strip mills as well as in plants for the production of thin strip (see FIG. 2) Find.
- Both types of plant have a rolling mill 1 - the finishing line the rolling mill is here with three stands 2a, 2b, 2c, each with two work rolls and two backup rolls shown schematically - to which there is an outlet section 3 and connect a reel device 4.
- a cooling device 5 is arranged according to the invention, which Hot strip 6 cools down at an adjustable speed.
- the temperatures to be reached should be below 450 ° C.
- With the help of the cooling rate and the cooling temperature is the desired structure - pure martensite, bainite or ferritic-pearlitic structure or mixed structure - adjustable. That so frightened Volume 6 is without further major formation of scale or surface oxides transported to the reel device 4. Located on the belt surface only the scale or surface oxides that form during the rolling process have formed.
- the coil 7 rolled up in the reel device 4 is then separated arranged continuous annealing furnace 8 supplied. According to an embodiment not shown it is also conceivable that the annealing furnace in the outlet section of the Rolling mill is integrated.
- the already completely cooled or still warm coil 7 is in an unwinding device 9 unrolled, and via a welding device 10 in an inlet memory 11 funded.
- These three system elements form the inlet group 12 of the continuous annealing furnace.
- From there it continuously enters the annealing furnace 8 preferably has a 100% hydrogen atmosphere.
- the seals of the annealing furnace on both sides can be realized with dynamic gas seals.
- the furnace is divided into three basic zones 13 (heating zone), 14 (holding zone), 15 (cooling zone), the heating zone 13 being divided into a first (13a) and divides a second (13b) heating zone.
- the first heating zone 13a is preferably provided with an induction furnace, which quickly heats the belt to temperatures of around 550 ° C.
- a relatively long holding area 14 in which essentially under the reducing conditions the descaling process and the setting of the desired structure takes place.
- a cooling process then closes Reeling on.
- the band in the cooling zone 15 to a Temperature cooled below 100 ° C, with the cooling rate and the cooling medium, the desired structure is adjustable.
- the Continuous annealing furnace 8 is a discharge group 16 downstream with discharge storage 17, skin pass mill and / or stretching judge 18 and a reel device 19.
- the strip 6 in the continuous annealing furnace 8 is only at a temperature of 400 to 700 ° C cooled and in the warm state of a hot-dip coating plant 20 supplied, shown here only schematically.
- FIG. 1 The rolling mill shown only partially in FIG. 1 is shown in FIG schematic representation of a combined casting and rolling plant concretized.
- a plant essentially consists of a continuous casting plant 21 (here schematically indicated with a mold) for a strand 22 of 30 to 250 mm Thickness, preferably from 30 to 130 - this indication of thickness is the protected area of the invention not limited -, a cross-section device 23, a device 24 for heating or equalizing the temperature, for example a walking beam furnace or a roller hearth furnace, and a rolling mill 1 (here schematically indicated with two roll stands 2a, 2b).
- the separation device can be dispensed with.
- a hot strip with very good results can be obtained Generate surface quality with good mechanical properties.
- the belt surface is reduced for further processing steps or surface treated, preferably hot-dip coated, as a finished strip product.
Abstract
Description
- Figur 1
- die schematische Abfolge des erfindungsgemäßen Verfahrens mit dem ersten Schritt einer Abkühlung nach der Walzstraße sowie dem nachgeschalteten Glühen;
- Figur 2
- die schematische Darstellung einer Dünnbrammengieß- und walzanlage.
Claims (11)
- Verfahren zur Oberflächenbehandlung von warmgewalzten Blechen oder Bändern (6) aus Metall zur Entfernung von Zunder oder Oberflächenoxiden, wobei das Walzgut nach dem Walzvorgang über eine Auslaufstrecke (3) zu einer Haspeleinrichtung (4) gefördert wird,
dadurch gekennzeichnet,daß in einem ersten Schritt das Walzgut (6) unmittelbar nach dem letzten Verformungsschritt in der Walzstraße homogen über Walzgutbreite und - länge auf eine Temperatur abgekühlt wird, bei der eine Zunderbildung des Walzgutes eingeschränkt oder unterdrückt ist, unddaß in einem zweiten Schritt das gegebenenfalls schwach verzunderte Walzgut zur vollständigen Entzunderung seiner Oberfläche sowie zur Einstellung gewünschter mechanischer Eigenschaften einer Glühung unter reduzierenden Bedingungen unterworfen wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß das Walzgut für den zweiten Verfahrensschritt einem kontinuierlichen Durchlaufglühofen (8) mit einer Heiz- (13) , Halte- (14) und Abkühlzone (15) zugeführt wird zum Aufheizen des Walzgutes auf Temperaturen im Bereich von etwa 500 bis 800°C, Halten des Walzproduktes auf der Aufheiztemperatur unter Reduktion der verbliebenen Zunderschicht sowie Abkühlen auf eine Temperatur aus dem Bereich von 100 bis 700°C. - Verfahren nach Anspruch 2,
dadurch gekennzeichnet, daß das Walzgut nach Durchlaufen einer ersten Aufheizzone (13a), in der es auf eine Temperatur von etwa 550°C vorgewärmt wird, eine sich unmittelbar anschließende zweite Aufheizzone (13b) durchläuft zwecks weiterem Aufheizen des Walzguts auf Temperaturen im Bereich von 700 bis 800°C. - Verfahren nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
daß in der Abkühlzone (15) des Durchlaufglühofens das Walzgut auf Temperaturen unterhalb von 100°C zwecks Verhinderung einer Reoxidation abgekühlt und unmittelbar anschließend aufgehaspelt wird. - Verfahren nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß in der Abkühlzone (15) des Durchlaufglühofens das Walzgut auf Temperaturen in einem Temperaturbereich zwischen 400 bis 700°C abgekühlt und anschließend im noch erwärmten Zustand unmittelbar oberflächenbeschichtet wird. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß das Walzgut unmittelbar nach dem letzten Walzstich abgekühlt wird, in der der Auslaufstrecke folgenden Haspeleinrichtung (4) aufgehaspelt wird, das gehaspelte Bund (7) einem zur Walzstraße separaten Durchlaufglühofen (8) zugeführt wird, vor Einlauf in den Durchlaufglühofen abgehaspelt wird, unter reduzierenden Bedingungen geglüht und anschließend abgekühlt und aufgehaspelt wird oder unmittelbar anschließend einer Schmelztauchveredlungslinie (20) zugeführt wird. - Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet,
daß die reduzierende Atmosphäre durch Wasserstoff, Kohlenmonoxid, Kohlenwasserstoffe, deren Gemische oder durch Gemische von Wasserstoff und Stickstoff eingestellt wird. - Anlage zur Oberflächenbehandlung von warmgewalzten Blechen oder Bändern aus Metall zur Entfernung von Zunder oder Oberflächenoxiden zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 7, wobei das Walzgut (6) aus dem Fertigwalzgerüst (2a, b, c) einer Walzstraße (1) austritt und über eine Auslaufstrecke (3) zu einer Haspeleinrichtung (4) gefördert wird,
gekennzeichnet durch
eine Abkühlvorrichtung (5) im Übergang zwischen Fertigwalzgerüst (2c) und Auslaufstrecke (3) sowie einen Durchlaufglühofen (8) für das abgekühlte Walzgut, der unter reduzierender Atmosphäre arbeitet. - Anlage nach Anspruch 8,
dadurch gekennzeichnet, daß der Durchlaufglühofen (8) separat zur Walzstraße (1) angeordnet ist. - Anlage nach Anspruch 9,
gekennzeichnet durchMittel zum Transport des abgekühlten aufgehaspelten Bandes (7) zum Durchlaufglühofen,eine Einlaufgruppe (12), die dem Durchlaufglühofen (8) vorgeordnet ist, umfassend eine Einrichtung zum Abhaspeln (9), gegebenenfalls eine Schweißeinrichtung (10) sowie gegebenenfalls einen Einlaufspeicher (11) undeine Auslaufgruppe (16), die dem Durchlaufglühofen (8) nachgeordnet ist, umfassend gegebenenfalls einen Auslaufspeicher (17), ein Dressiergerüst und/oder ein Streckrichteinrichtung (18) sowie eine Einrichtung zum Aufhaspeln (19) des Bandes bzw. Bleches oder eine sich unmittelbar an den Durchlaufglühofen anschließende Schmelztauchveredlungslinie (20). - Anlage zum Herstellen von Blechen und Bändern aus Metall mit einer Warmbandenddicke vorzugsweise kleiner als 2 mm, umfassend eine Stranggießanlage (21) zum Gießen von Brammen (22), wahlweise eine Querteileinrichtung (23), eine Erwärmungseinrichtung und/oder Temperaturausgleichseinrichtung (24), eine Warmwalzstraße (1) sowie eine Oberflächenbehandlungsanlage nach einem der Ansprüche 8 bis 10.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000112801 DE10012801A1 (de) | 2000-03-16 | 2000-03-16 | Verfahren und Anlage zur Oberflächenbehandlung von warmgewalzten Bändern oder Blechen aus Metall |
DE10012801 | 2000-03-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1134296A2 true EP1134296A2 (de) | 2001-09-19 |
EP1134296A3 EP1134296A3 (de) | 2004-01-28 |
Family
ID=7634939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01106505A Withdrawn EP1134296A3 (de) | 2000-03-16 | 2001-03-15 | Verfahren und Anlage zur Oberflächenbehandlung von warmgewaltzen Bändern oder Blechen aus Metall |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1134296A3 (de) |
JP (1) | JP2001314912A (de) |
DE (1) | DE10012801A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010121763A1 (de) | 2009-04-23 | 2010-10-28 | Sms Siemag Ag | Verfahren und vorrichtung zum stranggiessen einer bramme |
CN104014997A (zh) * | 2014-06-11 | 2014-09-03 | 河北钢铁股份有限公司 | 一种不锈钢复合板的制造方法 |
Families Citing this family (3)
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DE102008060467B4 (de) * | 2008-12-05 | 2013-08-01 | Thyssenkrupp Tailored Blanks Gmbh | Verfahren zur Herstellung von maßgeschneiderten Blechbändern |
KR101435704B1 (ko) | 2011-11-21 | 2014-09-01 | 주식회사 포스코 | 페라이트계 스테인리스강의 연연속 제조방법 및 이를 이용하여 제조된 페라이트계 스테인리스강 |
CN103056161A (zh) * | 2012-12-25 | 2013-04-24 | 安徽精诚铜业股份有限公司 | 一种用于铜及铜合金板带坯料热轧生产的热轧装置及其轧制方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010121763A1 (de) | 2009-04-23 | 2010-10-28 | Sms Siemag Ag | Verfahren und vorrichtung zum stranggiessen einer bramme |
CN104014997A (zh) * | 2014-06-11 | 2014-09-03 | 河北钢铁股份有限公司 | 一种不锈钢复合板的制造方法 |
Also Published As
Publication number | Publication date |
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JP2001314912A (ja) | 2001-11-13 |
EP1134296A3 (de) | 2004-01-28 |
DE10012801A1 (de) | 2001-09-20 |
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